diff --git a/app/build.gradle b/app/build.gradle
index 6b15316..9e74583 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -78,6 +78,7 @@ dependencies {
     implementation files('libs/gmhelper.jar')
     implementation files('libs/BaiduLBS_Android.jar')
     implementation files('libs/min-dev-java-1.0-release.jar')
+    implementation project(path: ':fileselectorlib')
 //    implementation files('libs/vpnjce-1.0.jar')
 
     // 在依赖中添加对jre的依赖，以尝试解决android.jar中原生javax与java中的javax的冲突问题
diff --git a/app/src/main/java/com/pkusz/min_vpn_client/activity/login/LoginActivity.java b/app/src/main/java/com/pkusz/min_vpn_client/activity/login/LoginActivity.java
index 46a2a36..c77ad05 100644
--- a/app/src/main/java/com/pkusz/min_vpn_client/activity/login/LoginActivity.java
+++ b/app/src/main/java/com/pkusz/min_vpn_client/activity/login/LoginActivity.java
@@ -7,9 +7,14 @@ package com.pkusz.min_vpn_client.activity.login;
  * @Copyright: MIN-Group；国家重大科技基础设施——未来网络北大实验室；深圳市信息论与未来网络重点实验室
  */
 
+import android.app.AlertDialog;
+import android.content.Intent;
 import android.os.Build;
 import android.os.Bundle;
+import android.view.LayoutInflater;
 import android.view.View;
+import android.view.Window;
+import android.view.WindowManager;
 import android.widget.ImageView;
 import android.widget.TextView;
 import android.widget.Toast;
@@ -30,6 +35,7 @@ import com.pkusz.min_vpn_client.utils.DigestUtilKt;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
+import java.util.ArrayList;
 import java.util.Objects;
 
 import br.com.simplepass.loadingbutton.customViews.CircularProgressButton;
@@ -43,7 +49,11 @@ import cn.qjm253.quick_android_easy_bar.EasyBar;
 import cn.qjm253.quick_android_easy_bar.EasyBarExtensionsKt;
 import kotlin.Unit;
 import kotlin.jvm.functions.Function1;
-import com.pkusz.min_vpn_client.utils.IdentityDump;
+
+import com.pkusz.min_vpn_client.utils.identity.IdentityDump;
+import com.pkusz.min_vpn_client.utils.identity.ScreenSizeUtils;
+import com.zlylib.fileselectorlib.FileSelector;
+import com.zlylib.fileselectorlib.utils.Const;
 
 
 public class LoginActivity extends MINVpnBaseActivity<LoginActivityPresenter>
@@ -153,7 +163,12 @@ public class LoginActivity extends MINVpnBaseActivity<LoginActivityPresenter>
             ContextExtensionKt.hideSoftKeyboard(this,export_identity);
             export_identity.startAnimation();
             export_identity.revertAnimation();
-            new IdentityDump().exportIdentity();
+            //new IdentityDump().exportIdentity();
+            //showCustomizeDialog();
+            FileSelector.from(this)
+                    .onlySelectFolder()  //只能选择文件夹
+                    .requestCode(2) //设置返回码
+                    .start();
             Toast.makeText(this, "You clicked export identity button", Toast.LENGTH_SHORT).show();
         });
 
@@ -163,7 +178,19 @@ public class LoginActivity extends MINVpnBaseActivity<LoginActivityPresenter>
             ContextExtensionKt.hideSoftKeyboard(this,import_identity);
             import_identity.startAnimation();
             import_identity.revertAnimation();
-            new IdentityDump().importIdentity();
+            FileSelector.from(this)
+                    // .onlyShowFolder()  //只显示文件夹
+                    //.onlySelectFolder()  //只能选择文件夹
+                    // .isSingle() // 只能选择一个
+                    .setMaxCount(1) //设置最大选择数
+                    .setFileTypes("png","jpg", "doc","apk", "mp3", "gif", "txt", "mp4", "zip","db","export") //设置文件类型
+                    .setSortType(FileSelector.BY_NAME_ASC) //设置名字排序
+                    //.setSortType(FileSelector.BY_TIME_ASC) //设置时间排序
+                    //.setSortType(FileSelector.BY_SIZE_DESC) //设置大小排序
+                    //.setSortType(FileSelector.BY_EXTENSION_DESC) //设置类型排序
+                    .requestCode(1) //设置返回码
+                    .setTargetPath("/storage/emulated/0/")
+                    .start();
             Toast.makeText(this, "You clicked import identity button", Toast.LENGTH_SHORT).show();
         });
 
@@ -290,4 +317,73 @@ public class LoginActivity extends MINVpnBaseActivity<LoginActivityPresenter>
     public void syncVpnInfoFailed() {
         showWarning("从VMS同步VPN服务器信息失败");
     }
+
+    private void showCustomizeDialog() {
+        /* @setView 装入自定义View ==> R.layout.dialog_customize
+         * 由于dialog_customize.xml只放置了一个EditView，因此和图8一样
+         * dialog_customize.xml可自定义更复杂的View
+         */
+        View view = LayoutInflater.from(this).inflate(R.layout.layout_identity_dialog,null,false);
+        final AlertDialog dialog = new AlertDialog.Builder(this).setView(view).create();
+        //使得点击对话框外部不消失对话框
+        dialog.setCanceledOnTouchOutside(false);
+//        Button test_button=view.findViewById(R.id.text_button);
+//        test_button.setOnClickListener(v->{
+//            Toast.makeText(this, "You clicked test button", Toast.LENGTH_SHORT).show();
+//            dialog.dismiss();
+//        });
+
+        dialog.show();
+
+        //设置dialog的位置、大小
+        Window dialogWindow = dialog.getWindow();
+        WindowManager.LayoutParams lp = dialogWindow.getAttributes();
+        lp.width = (int) (ScreenSizeUtils.getInstance(this).getScreenWidth() * 0.8f);
+        lp.height = (int) (ScreenSizeUtils.getInstance(this).getScreenHeight() * 0.5f);
+        dialogWindow.setAttributes(lp);
+
+    }
+
+    @Override
+    //回调函数
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        if (resultCode == RESULT_OK) {
+            //导入身份
+            if (requestCode == 1) {
+                if (data.getStringArrayListExtra(Const.EXTRA_RESULT_SELECTION) != null) {
+                    ArrayList<String> essFileList = data.getStringArrayListExtra(Const.EXTRA_RESULT_SELECTION);
+                    StringBuilder builder = new StringBuilder();
+                    System.out.println(essFileList.size());
+                    System.out.println(essFileList);
+                    for (String file :
+                            essFileList) {
+                        builder.append(file);
+                    }
+                    System.out.print(builder.toString());
+                    String path=builder.toString();
+                    new IdentityDump().importIdentity(path);
+                    Toast.makeText(this, "export adress is "+path, Toast.LENGTH_SHORT).show();
+                }
+            }
+            //导出身份
+            if(requestCode==2){
+                if (data.getStringArrayListExtra(Const.EXTRA_RESULT_SELECTION) != null) {
+                    ArrayList<String> essFileList = data.getStringArrayListExtra(Const.EXTRA_RESULT_SELECTION);
+                    StringBuilder builder = new StringBuilder();
+                    System.out.println(essFileList.size());
+                    System.out.println(essFileList);
+                    for (String file :
+                            essFileList) {
+                        builder.append(file);
+                    }
+                    String path=builder.toString();
+                    //new IdentityDump().importIdentity(path);
+                    System.out.println(path);
+                    new IdentityDump().exportIdentity(path);
+                    Toast.makeText(this, "import address is "+path, Toast.LENGTH_SHORT).show();
+                }
+            }
+        }
+    }
 }
diff --git a/app/src/main/java/com/pkusz/min_vpn_client/utils/IdentityDump.java b/app/src/main/java/com/pkusz/min_vpn_client/utils/identity/IdentityDump.java
similarity index 55%
rename from app/src/main/java/com/pkusz/min_vpn_client/utils/IdentityDump.java
rename to app/src/main/java/com/pkusz/min_vpn_client/utils/identity/IdentityDump.java
index 9c98f3f..a72767d 100644
--- a/app/src/main/java/com/pkusz/min_vpn_client/utils/IdentityDump.java
+++ b/app/src/main/java/com/pkusz/min_vpn_client/utils/identity/IdentityDump.java
@@ -1,9 +1,12 @@
-package com.pkusz.min_vpn_client.utils;
+package com.pkusz.min_vpn_client.utils.identity;
 
 
+import com.pkusz.min_vpn_client.utils.KeyManager;
+
 import security.SafeBag;
 import util.FileUtil;
 import java.io.IOException;
+import java.security.SecureRandom;
 import java.util.Arrays;
 
 
@@ -79,6 +82,56 @@ public class IdentityDump {
                 .getIdentity("/"+username,identityPath));
     }
 
+    public void importIdentity(String identityFilePath){
+        // 导入身份前查看是否有该用户身份
+//        System.out.println("试图取出未导入的用户身份: "+KeyManager.INSTANCE
+//                .getIdentity("/"+username,identityPath));
+        // 从本地文件中读取身份数据
 
+        byte[] identityBytes;
+        try {
+            identityBytes=FileUtil.readFile(identityFilePath);
+        } catch (IOException e) {
+            e.printStackTrace();
+            return;
+        }
+        // 转成SafeBag
+        SafeBag safeBag=new SafeBag(identityBytes);
+        // 导入到本地身份数据库中
+        try {
+            KeyManager.INSTANCE.getKeyChain().importSafeBag(safeBag,"",true);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        // 导入身份后查看是否有该用户身份
+        int last=identityFilePath.lastIndexOf("/");
+        String identityPath=identityFilePath.substring(0,last);
+        System.out.println("查看是否成功导入用户身份: "+KeyManager.INSTANCE
+                .getIdentity("/"+username,identityPath));
+    }
+
+
+    public void exportIdentity(String identityPath){
+        String identityFilePath=identityPath+username+".export";
+        // 生成数据库身份
+        new IdentityDump().generateForeverIdentity(username,identityPath);
+        System.out.println("生成的用户身份: "+KeyManager.INSTANCE
+                .getIdentity("/"+username,identityPath));
+        // 导出数据库身份
+        SafeBag safeBag;
+        try {
+            safeBag=KeyManager.INSTANCE.getKeyChain().exportSafeBag("");
+            System.out.println(Arrays.toString(safeBag.getValue()));
+        } catch (Exception e) {
+            e.printStackTrace();
+            return;
+        }
+        // 将身份数据写入本地文件
+        try {
+            FileUtil.writeFile(identityFilePath,safeBag.getValue());
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
 
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/pkusz/min_vpn_client/utils/identity/ScreenSizeUtils.java b/app/src/main/java/com/pkusz/min_vpn_client/utils/identity/ScreenSizeUtils.java
new file mode 100644
index 0000000..4e42ae7
--- /dev/null
+++ b/app/src/main/java/com/pkusz/min_vpn_client/utils/identity/ScreenSizeUtils.java
@@ -0,0 +1,38 @@
+package com.pkusz.min_vpn_client.utils.identity;
+
+import android.content.Context;
+import android.util.DisplayMetrics;
+import android.view.WindowManager;
+
+public class ScreenSizeUtils {
+    private static ScreenSizeUtils instance = null;
+    private int screenWidth, screenHeight;
+
+    public static ScreenSizeUtils getInstance(Context mContext) {
+        if (instance == null) {
+            synchronized (ScreenSizeUtils.class) {
+                if (instance == null)
+                    instance = new ScreenSizeUtils(mContext);
+            }
+        }
+        return instance;
+    }
+
+    private ScreenSizeUtils(Context mContext) {
+        WindowManager manager = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);
+        DisplayMetrics dm = new DisplayMetrics();
+        manager.getDefaultDisplay().getMetrics(dm);
+        screenWidth = dm.widthPixels;// 获取屏幕分辨率宽度
+        screenHeight = dm.heightPixels;// 获取屏幕分辨率高度
+    }
+
+    //获取屏幕宽度
+    public int getScreenWidth() {
+        return screenWidth;
+    }
+
+    //获取屏幕高度
+    public int getScreenHeight() {
+        return screenHeight;
+    }
+}
diff --git a/app/src/main/res/layout/layout_identity_dialog.xml b/app/src/main/res/layout/layout_identity_dialog.xml
new file mode 100644
index 0000000..b5a7017
--- /dev/null
+++ b/app/src/main/res/layout/layout_identity_dialog.xml
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/coordinator_layout"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="选择文件目录"
+        android:id="@+id/hint_text"
+        />
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="33dp"
+        android:background="#EEEEEE"
+        android:orientation="horizontal">
+
+        <ImageView
+            android:id="@+id/imb_select_sdcard"
+            android:layout_width="36dp"
+            android:layout_height="36dp"
+            android:layout_gravity="center_vertical"
+            android:background="?android:attr/selectableItemBackground"
+            android:rotation="90"
+            android:scaleType="centerInside"
+            android:src="@mipmap/ic_chevron_right_white_24dp"
+
+            android:visibility="gone" />
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/breadcrumbs_view"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:paddingRight="10dp" />
+    </LinearLayout>
+
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/rcv_file_list"
+        android:layout_width="match_parent"
+        android:layout_height="300dp"
+
+        android:scrollbars="vertical"
+        app:layout_behavior="@string/appbar_scrolling_view_behavior" />
+
+    <Button
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:id="@+id/confirm_button"
+        android:text="确定"
+        />
+</LinearLayout>
diff --git a/app/src/main/res/mipmap-hdpi/ic_chevron_right_white_24dp.png b/app/src/main/res/mipmap-hdpi/ic_chevron_right_white_24dp.png
new file mode 100644
index 0000000..93dec39
Binary files /dev/null and b/app/src/main/res/mipmap-hdpi/ic_chevron_right_white_24dp.png differ
diff --git a/fileselectorlib/.gitignore b/fileselectorlib/.gitignore
new file mode 100644
index 0000000..796b96d
--- /dev/null
+++ b/fileselectorlib/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/fileselectorlib/build.gradle b/fileselectorlib/build.gradle
new file mode 100644
index 0000000..501cfd7
--- /dev/null
+++ b/fileselectorlib/build.gradle
@@ -0,0 +1,37 @@
+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 27
+    buildToolsVersion "29.0.3"
+
+    defaultConfig {
+        minSdkVersion 19
+        targetSdkVersion 27
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        consumerProguardFiles 'consumer-rules.pro'
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+
+    implementation 'androidx.appcompat:appcompat:1.1.0'
+    //Android 自定义性ActionBar
+    implementation 'com.github.ZLYang110:TitleBar:1.0.1'
+    implementation 'androidx.recyclerview:recyclerview:1.1.0'
+    implementation 'com.github.CymChad:BaseRecyclerViewAdapterHelper:3.0.4'
+    implementation 'com.github.bumptech.glide:glide:4.8.0'
+    implementation 'org.greenrobot:eventbus:3.1.1'
+    implementation 'com.android.support:design:27.1.0'
+}
diff --git a/fileselectorlib/consumer-rules.pro b/fileselectorlib/consumer-rules.pro
new file mode 100644
index 0000000..e69de29
diff --git a/fileselectorlib/proguard-rules.pro b/fileselectorlib/proguard-rules.pro
new file mode 100644
index 0000000..f1b4245
--- /dev/null
+++ b/fileselectorlib/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
diff --git a/fileselectorlib/src/androidTest/java/com/zlylib/fileselectorlib/ExampleInstrumentedTest.java b/fileselectorlib/src/androidTest/java/com/zlylib/fileselectorlib/ExampleInstrumentedTest.java
new file mode 100644
index 0000000..8e14962
--- /dev/null
+++ b/fileselectorlib/src/androidTest/java/com/zlylib/fileselectorlib/ExampleInstrumentedTest.java
@@ -0,0 +1,27 @@
+package com.zlylib.fileselectorlib;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+
+        assertEquals("com.zlylib.fileselectorlib.test", appContext.getPackageName());
+    }
+}
diff --git a/fileselectorlib/src/main/AndroidManifest.xml b/fileselectorlib/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..c457b3c
--- /dev/null
+++ b/fileselectorlib/src/main/AndroidManifest.xml
@@ -0,0 +1,21 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.zlylib.fileselectorlib">
+
+
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <application>
+        <activity android:name=".ui.FileSelectorActivity" />
+        <provider
+            android:name="androidx.core.content.FileProvider"
+            android:authorities="${applicationId}.ess.file.provider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/provider_paths" />
+        </provider>
+
+
+    </application>
+</manifest>
\ No newline at end of file
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/FileSelector.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/FileSelector.java
new file mode 100644
index 0000000..afbc514
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/FileSelector.java
@@ -0,0 +1,66 @@
+package com.zlylib.fileselectorlib;
+
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.fragment.app.Fragment;
+
+import com.zlylib.fileselectorlib.ui.FileSelectorActivity;
+
+import java.lang.ref.WeakReference;
+
+public class FileSelector {
+
+    public static final int BY_NAME_ASC = 0;
+    public static final int BY_NAME_DESC = 1;
+    public static final int BY_TIME_ASC = 2;
+    public static final int BY_TIME_DESC = 3;
+    public static final int BY_SIZE_ASC = 4;
+    public static final int BY_SIZE_DESC = 5;
+    public static final int BY_EXTENSION_ASC = 6;
+
+    private final WeakReference<Context> mContext;
+    private final WeakReference<Fragment> mFragment;
+
+    private FileSelector(AppCompatActivity activity) {
+        this(activity,null);
+    }
+
+    private FileSelector(Fragment fragment){
+        this( fragment.getActivity(),fragment);
+    }
+
+    private FileSelector(Context mContext, Fragment mFragment) {
+        this.mContext = new WeakReference<>(mContext);
+        this.mFragment = new WeakReference<>(mFragment);
+    }
+
+    public static SelectCreator from(AppCompatActivity activity){
+        return new FileSelector(activity).initFile();
+    }
+
+    public static SelectCreator from(Fragment fragment){
+        return new FileSelector(fragment).initFile();
+    }
+
+    private SelectCreator initFile(){
+        return new SelectCreator(this);
+    }
+
+
+
+
+    public Context getActivity() {
+        return mContext.get();
+    }
+
+    public Fragment getFragment() {
+        return mFragment != null ? mFragment.get() : null;
+    }
+
+
+
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/SelectCreator.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/SelectCreator.java
new file mode 100644
index 0000000..8cc73fc
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/SelectCreator.java
@@ -0,0 +1,118 @@
+package com.zlylib.fileselectorlib;
+
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.drawable.Drawable;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.fragment.app.Fragment;
+
+import com.zlylib.fileselectorlib.ui.FileSelectorActivity;
+
+/**
+ * SelectCreator
+ * Created by zhangliyang on 2020/6/20.
+ */
+
+public final class SelectCreator {
+
+    private  FileSelector filePicker;
+    private  SelectOptions selectOptions;
+
+    public SelectCreator(FileSelector filePicker ) {
+        selectOptions = SelectOptions.getCleanInstance();
+        this.filePicker = filePicker;
+    }
+
+    public SelectCreator setMaxCount(int maxCount) {
+        selectOptions.maxCount = maxCount;
+        if (maxCount <= 1) {
+            selectOptions.maxCount = 1;
+            selectOptions.isSingle = true;
+        } else {
+            selectOptions.isSingle = false;
+        }
+        return this;
+    }
+
+
+    public SelectCreator setTargetPath(String path){
+        selectOptions.targetPath = path;
+        return this;
+    }
+
+
+
+    public SelectCreator setFileTypes(String... fileTypes) {
+        selectOptions.mFileTypes = fileTypes;
+        return this;
+    }
+
+    public SelectCreator setSortType(int sortType) {
+        selectOptions.setSortType(sortType);
+        return this;
+    }
+
+    public SelectCreator isSingle() {
+        selectOptions.isSingle = true;
+        selectOptions.maxCount = 1;
+        return this;
+    }
+
+    public SelectCreator onlyShowFolder() {
+        selectOptions.setOnlyShowFolder(true);
+        selectOptions.setOnlySelectFolder(true);
+        return this;
+    }
+    public SelectCreator onlySelectFolder() {
+        selectOptions.setOnlySelectFolder(true);
+        return this;
+    }
+    public SelectCreator setTilteBg(int color) {
+        selectOptions.setTitleBg(color);
+        return this;
+    }
+    public SelectCreator setTitleColor(int color) {
+        selectOptions.setTitleColor(color);
+        return this;
+    }
+    public SelectCreator setTitleLiftColor(int color) {
+        selectOptions.setTitleLiftColor(color);
+        return this;
+    }
+    public SelectCreator setTitleRightColor(int color) {
+        selectOptions.setTitleRightColor(color);
+        return this;
+    }
+   /* public SelectCreator onlyShowImages() {
+        selectOptions.onlyShowImages = true;
+        return this;
+    }
+
+    public SelectCreator onlyShowVideos() {
+        selectOptions.onlyShowVideos = true;
+        return this;
+    }
+*/
+
+    public SelectCreator requestCode(int requestCode) {
+        selectOptions.request_code = requestCode;
+        return this;
+    }
+
+    public void start() {
+        final Context activity = filePicker.getActivity();
+        if (activity == null) {
+            return;
+        }
+        Intent intent = new Intent();
+        intent.setClass(activity, FileSelectorActivity.class);
+        Fragment fragment = filePicker.getFragment();
+        if (fragment != null) {
+            fragment.startActivityForResult(intent, selectOptions.request_code);
+        } else {
+            ((AppCompatActivity)activity).startActivityForResult(intent, selectOptions.request_code);
+        }
+    }
+
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/SelectOptions.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/SelectOptions.java
new file mode 100644
index 0000000..7f299da
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/SelectOptions.java
@@ -0,0 +1,144 @@
+package com.zlylib.fileselectorlib;
+
+import android.graphics.drawable.Drawable;
+import android.os.Environment;
+import android.text.TextUtils;
+
+import com.zlylib.fileselectorlib.utils.FileUtils;
+
+import java.io.File;
+
+/**
+ * SelectOptions
+ * Created by ZHANGLIYANG on 2020/6/20.
+ */
+
+public class SelectOptions {
+
+
+    public static final String defaultTargetPath = Environment.getExternalStorageDirectory() + "/";
+
+    public String[] mFileTypes;
+    public String mSortType;//排序类型
+    public boolean isSingle = false;//是否是单选
+    public int maxCount = 10;//最多选的个数
+    private boolean onlyShowFolder = false;//只显示文件夹
+    private boolean onlySelectFolder = false;//只选择文件夹
+    //public boolean onlyShowImages = false;//只显示图片
+    //public boolean onlyShowVideos = false;//只显示视频
+    public int request_code;//返回码
+    public String targetPath = defaultTargetPath;//设置默认目录
+
+    private int titleBg = 0;//标题背景颜色
+    private int titleColor = 0;//标题文字颜色
+    private int titleLiftColor = 0;//标题左边颜色
+    private int titleRightColor = 0;//标题右边颜色
+
+
+    public String[] getFileTypes() {
+        if (mFileTypes == null || mFileTypes.length == 0) {
+            return new String[]{};
+        }
+        return mFileTypes;
+    }
+
+    public int getSortType() {
+        if (TextUtils.isEmpty(mSortType)) {
+            return FileUtils.BY_NAME_ASC;
+        }
+        return Integer.valueOf(mSortType);
+    }
+
+    public void setSortType(int sortType) {
+        mSortType = String.valueOf(sortType);
+    }
+
+    public String getTargetPath() {
+        if (!new File(targetPath).exists()) {
+            File file = new File(defaultTargetPath);
+            if (!file.exists()) {
+                file.mkdirs();
+            }
+            return defaultTargetPath;
+        }
+        return targetPath;
+    }
+
+    public boolean isOnlyShowFolder() {
+        return onlyShowFolder;
+    }
+
+    public void setOnlyShowFolder(boolean onlyShowFolder) {
+        this.onlyShowFolder = onlyShowFolder;
+    }
+
+    public boolean isOnlySelectFolder() {
+        return onlySelectFolder;
+    }
+
+    public void setOnlySelectFolder(boolean onlySelectFolder) {
+        this.onlySelectFolder = onlySelectFolder;
+    }
+
+    public int getTitleBg() {
+        return titleBg;
+    }
+
+    public void setTitleBg(int titleBg) {
+        this.titleBg = titleBg;
+    }
+
+    public int getTitleColor() {
+        return titleColor;
+    }
+
+    public void setTitleColor(int titleColor) {
+        this.titleColor = titleColor;
+    }
+
+    public int getTitleLiftColor() {
+        return titleLiftColor;
+    }
+
+    public void setTitleLiftColor(int titleLiftColor) {
+        this.titleLiftColor = titleLiftColor;
+    }
+
+    public int getTitleRightColor() {
+        return titleRightColor;
+    }
+
+    public void setTitleRightColor(int titleRightColor) {
+        this.titleRightColor = titleRightColor;
+    }
+
+    public static SelectOptions getInstance() {
+        return InstanceHolder.INSTANCE;
+    }
+
+    public static SelectOptions getCleanInstance() {
+        SelectOptions options = getInstance();
+        options.reset();
+        return options;
+    }
+
+    private void reset() {
+        mFileTypes = new String[]{};
+        mSortType = String.valueOf(FileUtils.BY_NAME_ASC);
+        isSingle = false;
+        maxCount = 10;
+        onlyShowFolder = false;
+        onlySelectFolder = false;
+        targetPath = defaultTargetPath;
+        titleBg = 0;//标题背景颜色
+        titleColor = 0;//标题文字颜色
+        titleLiftColor = 0;//标题左边颜色
+        titleRightColor = 0;//标题右边颜色
+
+    }
+
+    private static final class InstanceHolder {
+        private static final SelectOptions INSTANCE = new SelectOptions();
+    }
+
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/adapter/BreadAdapter.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/adapter/BreadAdapter.java
new file mode 100644
index 0000000..12966fb
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/adapter/BreadAdapter.java
@@ -0,0 +1,32 @@
+package com.zlylib.fileselectorlib.adapter;
+
+
+
+import android.annotation.SuppressLint;
+
+import androidx.annotation.Nullable;
+
+import com.chad.library.adapter.base.BaseQuickAdapter;
+import com.chad.library.adapter.base.viewholder.BaseViewHolder;
+import com.zlylib.fileselectorlib.R;
+import com.zlylib.fileselectorlib.bean.BreadModel;
+
+import java.util.List;
+
+/**
+ * BreadAdapter
+ * Created by zhangliyang on 2020/6/20.
+ */
+
+public class BreadAdapter extends BaseQuickAdapter<BreadModel, BaseViewHolder> {
+
+    public BreadAdapter(@Nullable List<BreadModel> data) {
+        super(R.layout.bread_item,data);
+        addChildClickViewIds(R.id.btn_bread);
+    }
+
+    @Override
+    protected void convert(BaseViewHolder helper, BreadModel item) {
+        helper.setText(R.id.btn_bread,item.getCurName());
+    }
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/adapter/FileListAdapter.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/adapter/FileListAdapter.java
new file mode 100644
index 0000000..149ca90
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/adapter/FileListAdapter.java
@@ -0,0 +1,141 @@
+package com.zlylib.fileselectorlib.adapter;
+
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.annotation.Nullable;
+
+import com.bumptech.glide.Glide;
+import com.bumptech.glide.request.RequestOptions;
+import com.chad.library.adapter.base.BaseQuickAdapter;
+import com.chad.library.adapter.base.viewholder.BaseViewHolder;
+import com.zlylib.fileselectorlib.R;
+import com.zlylib.fileselectorlib.bean.EssFile;
+import com.zlylib.fileselectorlib.utils.FileSizeUtil;
+import com.zlylib.fileselectorlib.utils.FileUtils;
+
+import java.util.List;
+
+/**
+ * FileListAdapter
+ * Created by zhangliyang on 2020/6/20.
+ */
+
+public class FileListAdapter extends BaseQuickAdapter<EssFile, BaseViewHolder> {
+
+    private onLoadFileCountListener loadFileCountListener;
+
+    public interface onLoadFileCountListener{
+        void onLoadFileCount(int posistion);
+    }
+
+    public onLoadFileCountListener getLoadFileCountListener() {
+        return loadFileCountListener;
+    }
+
+    public void setLoadFileCountListener(onLoadFileCountListener loadFileCountListener) {
+        this.loadFileCountListener = loadFileCountListener;
+    }
+
+    public FileListAdapter(@Nullable List<EssFile> data) {
+        super(R.layout.item_file_list, data);
+    }
+
+    @Override
+    protected void convert(BaseViewHolder helper, EssFile item) {
+        TextView textView = helper.getView(R.id.tv_item_file_list_desc);
+        if (item.isDirectory()) {
+            helper.setVisible(R.id.iv_item_file_select_right, true);
+            if(item.getChildFolderCount().equals("加载中")){
+                //查找数量
+                if(loadFileCountListener!=null){
+                    loadFileCountListener.onLoadFileCount(helper.getAdapterPosition());
+                }
+            }
+            textView.setText(String.format(getContext().getString(R.string.folder_desc), item.getChildFileCount(),item.getChildFolderCount()));
+        } else {
+            helper.setVisible(R.id.iv_item_file_select_right, false);
+            textView.setText(String.format(getContext().getString(R.string.file_desc), FileUtils.getDateTime(item.getAbsolutePath()), FileSizeUtil.getAutoFileOrFilesSize(item.getFile())));
+        }
+        helper.setText(R.id.tv_item_file_list, item.getName());
+        if(item.isChecked()){
+            helper.setVisible(R.id.checkbox_item_file_list,true);
+        }else {
+            helper.setVisible(R.id.checkbox_item_file_list,false);
+        }
+        ImageView imageView = helper.getView(R.id.iv_item_file_select_left);
+        String fileNameExtension = FileUtils.getExtension(item.getName()).toLowerCase();
+        switch (fileNameExtension) {
+            case "apk":
+                imageView.setImageResource(R.mipmap.apk);
+                break;
+            case "avi":
+                imageView.setImageResource(R.mipmap.avi);
+                break;
+            case "doc":
+            case "docx":
+                imageView.setImageResource(R.mipmap.doc);
+                break;
+            case "exe":
+                imageView.setImageResource(R.mipmap.exe);
+                break;
+            case "flv":
+                imageView.setImageResource(R.mipmap.flv);
+                break;
+            case "gif":
+                RequestOptions options = new RequestOptions()
+                        .centerCrop()
+                        .placeholder(R.mipmap.gif);
+                Glide
+                        .with(getContext())
+                        .load(item.getAbsolutePath())
+                        .apply(options)
+                        .into(imageView);
+                break;
+            case "jpg":
+            case "jpeg":
+            case "png":
+                RequestOptions options2 = new RequestOptions()
+                        .centerCrop()
+                        .placeholder(R.mipmap.png);
+                Glide
+                        .with(getContext())
+                        .load(item.getAbsolutePath())
+                        .apply(options2)
+                        .into(imageView);
+                break;
+            case "mp3":
+                imageView.setImageResource(R.mipmap.mp3);
+                break;
+            case "mp4":
+            case "f4v":
+                imageView.setImageResource(R.mipmap.movie);
+                break;
+            case "pdf":
+                imageView.setImageResource(R.mipmap.pdf);
+                break;
+            case "ppt":
+            case "pptx":
+                imageView.setImageResource(R.mipmap.ppt);
+                break;
+            case "wav":
+                imageView.setImageResource(R.mipmap.wav);
+                break;
+            case "xls":
+            case "xlsx":
+                imageView.setImageResource(R.mipmap.xls);
+                break;
+            case "zip":
+                imageView.setImageResource(R.mipmap.zip);
+                break;
+            case "ext":
+            default:
+                if (item.isDirectory()) {
+                    imageView.setImageResource(R.mipmap.folder);
+                } else {
+                    imageView.setImageResource(R.mipmap.documents);
+                }
+                break;
+        }
+    }
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/adapter/SelectSdcardAdapter.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/adapter/SelectSdcardAdapter.java
new file mode 100644
index 0000000..d406a2b
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/adapter/SelectSdcardAdapter.java
@@ -0,0 +1,26 @@
+package com.zlylib.fileselectorlib.adapter;
+
+
+import androidx.annotation.Nullable;
+
+import com.chad.library.adapter.base.BaseQuickAdapter;
+import com.chad.library.adapter.base.viewholder.BaseViewHolder;
+import com.zlylib.fileselectorlib.R;
+
+import java.util.List;
+
+/**
+ * SelectSdcardAdapter
+ * Created by zhangliyang on 2020/6/22.
+ */
+
+public class SelectSdcardAdapter extends BaseQuickAdapter<String, BaseViewHolder> {
+    public SelectSdcardAdapter(@Nullable List<String> data) {
+        super(R.layout.item_select_sdcard,data);
+    }
+
+    @Override
+    protected void convert(BaseViewHolder helper, String item) {
+        helper.setText(R.id.tv_item_select_sdcard,item);
+    }
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/bean/BreadModel.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/bean/BreadModel.java
new file mode 100644
index 0000000..f8fb7fb
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/bean/BreadModel.java
@@ -0,0 +1,93 @@
+package com.zlylib.fileselectorlib.bean;
+
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * BreadModel
+ * Created by zhangliyang on 2018/2/5.
+ */
+
+public class BreadModel {
+
+    /*当前Path*/
+    private String mCurPath;
+
+    /*之前的浏览位置，默认0*/
+    private int mPrePosition = 0;
+
+    /*当前面包屑的名称*/
+    private String mCurName;
+
+    public String getCurName() {
+        return mCurName;
+    }
+
+    public void setCurName(String mCurName) {
+        this.mCurName = mCurName;
+    }
+
+    public int getPrePosition() {
+        return mPrePosition;
+    }
+
+    public void setPrePosition(int mPrePosition) {
+        this.mPrePosition = mPrePosition;
+    }
+
+    public String getCurPath() {
+        return mCurPath;
+    }
+
+    public void setmCurPath(String mCurPath) {
+        this.mCurPath = mCurPath;
+    }
+
+    /**
+     * 获取需要添加的路径列表
+     * @param oldList
+     * @param newList
+     * @return
+     */
+    public static List<BreadModel> getNewBreadModel(List<BreadModel> oldList, List<BreadModel> newList) {
+        List<BreadModel> newModelList = new ArrayList<>();
+        if (oldList == null || newList == null) {
+            return newModelList;
+        }
+        if (oldList.size() >= newList.size()) {
+            return newModelList;
+        }
+        for (int i = 0; i < newList.size(); i++) {
+            if (i < oldList.size()) {
+                continue;
+            }
+            newModelList.add(newList.get(i));
+        }
+        return newModelList;
+    }
+
+    /**
+     * 获取路径List需要裁剪的位置
+     * @param oldList
+     * @param newList
+     * @return
+     */
+    public static int getRemovedBreadModel(List<BreadModel> oldList, List<BreadModel> newList) {
+        int removeFirstPosition = 0;
+        if (oldList == null || newList == null) {
+            return removeFirstPosition;
+        }
+        if (oldList.size() <= newList.size()) {
+            return removeFirstPosition;
+        }
+        for (int i = 0; i < oldList.size(); i++) {
+            if (i == newList.size()) {
+                return i;
+            }
+        }
+        return removeFirstPosition;
+    }
+
+
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/bean/EssFile.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/bean/EssFile.java
new file mode 100644
index 0000000..9f0c5a5
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/bean/EssFile.java
@@ -0,0 +1,291 @@
+package com.zlylib.fileselectorlib.bean;
+
+import android.content.ContentUris;
+import android.content.Context;
+import android.net.Uri;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.provider.MediaStore;
+
+import com.zlylib.fileselectorlib.utils.FileUtils;
+import com.zlylib.fileselectorlib.utils.MimeType;
+import com.zlylib.fileselectorlib.utils.PathUtils;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Set;
+
+/**
+ * EssFile
+ * Created by zhangliyang on 2018/2/5.
+ */
+
+public class EssFile implements Parcelable {
+
+    public static final int CAPTURE = 0;
+    public static final int MEDIA = 1;
+
+    private String mFilePath;   
+    private String mimeType;
+    private String childFolderCount = "加载中";
+    private String childFileCount = "加载中";
+    private boolean isChecked = false;
+    private boolean isExits = false;
+    private boolean isDirectory = false;
+    private boolean isFile = false;
+    private String mFileName;
+    private Uri uri;
+
+    private int itemType = MEDIA;
+
+    protected EssFile(Parcel in) {
+        mFilePath = in.readString();
+        mimeType = in.readString();
+        childFolderCount = in.readString();
+        childFileCount = in.readString();
+        isChecked = in.readByte() != 0;
+        isExits = in.readByte() != 0;
+        isDirectory = in.readByte() != 0;
+        isFile = in.readByte() != 0;
+        mFileName = in.readString();
+        uri = in.readParcelable(Uri.class.getClassLoader());
+        itemType = in.readInt();
+    }
+
+    public static final Creator<EssFile> CREATOR = new Creator<EssFile>() {
+        @Override
+        public EssFile createFromParcel(Parcel in) {
+            return new EssFile(in);
+        }
+
+        @Override
+        public EssFile[] newArray(int size) {
+            return new EssFile[size];
+        }
+    };
+
+    public boolean isChecked() {
+        return isChecked;
+    }
+
+    public void setChecked(boolean checked) {
+        isChecked = checked;
+    }
+
+    public EssFile(String path) {
+        mFilePath = path;
+        File file = new File(mFilePath);
+        if (file.exists()) {
+            isExits = true;
+            isDirectory = file.isDirectory();
+            isFile = file.isFile();
+            mFileName = file.getName();
+        }
+        mimeType = FileUtils.getMimeType(mFilePath);
+    }
+
+    public EssFile(File file) {
+        mFilePath = file.getAbsolutePath();
+        if (file.exists()) {
+            isExits = true;
+            isDirectory = file.isDirectory();
+            isFile = file.isFile();
+        }
+        mimeType = FileUtils.getMimeType(file.getAbsolutePath());
+    }
+
+    public EssFile(long id, String mimeType) {
+        this.mimeType = mimeType;
+        Uri contentUri;
+        if (isImage()) {
+            contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
+        } else if (isVideo()) {
+            contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
+        } else {
+            // ?
+            contentUri = MediaStore.Files.getContentUri("external");
+        }
+        this.uri = ContentUris.withAppendedId(contentUri, id);
+    }
+
+    public Uri getUri() {
+        return uri;
+    }
+
+    public boolean isExits() {
+        return isExits;
+    }
+
+    public String getMimeType() {
+        return mimeType;
+    }
+
+    public void setMimeType(String mimeType) {
+        this.mimeType = mimeType;
+    }
+
+    public String getChildFolderCount() {
+        return childFolderCount;
+    }
+
+    public void setChildFolderCount(String childFolderCount) {
+        this.childFolderCount = childFolderCount;
+    }
+
+    public String getChildFileCount() {
+        return childFileCount;
+    }
+
+    public void setChildFileCount(String childFileCount) {
+        this.childFileCount = childFileCount;
+    }
+
+    public void setChildCounts(String childFileCount, String childFolderCount) {
+        this.childFileCount = childFileCount;
+        this.childFolderCount = childFolderCount;
+    }
+
+
+    public File getFile() {
+        return new File(mFilePath);
+    }
+
+    public String getName() {
+        return new File(mFilePath).getName();
+    }
+
+    public boolean isDirectory() {
+        return isDirectory;
+    }
+
+    public boolean isFile() {
+        return isFile;
+    }
+
+    public String getAbsolutePath() {
+        return mFilePath;
+    }
+
+    public static List<EssFile> getEssFileList(List<File> files,boolean isSelectFolder) {
+        List<EssFile> essFileList = new ArrayList<>();
+        for (File file :files) {
+            if(isSelectFolder){
+                if(isFolder(file)){//只添加文件夹
+                    essFileList.add(new EssFile(file));
+                }
+            }else{
+                essFileList.add(new EssFile(file));
+            }
+
+        }
+        return essFileList;
+    }
+
+    public static ArrayList<EssFile> getEssFileList(Context context, Set<EssFile> essFileSet) {
+        ArrayList<EssFile> essFileArrayList = new ArrayList<>();
+        for (EssFile ess_file :
+                essFileSet) {
+            ess_file.mFilePath = PathUtils.getPath(context, ess_file.uri);
+            essFileArrayList.add(ess_file);
+        }
+        return essFileArrayList;
+    }
+
+    public static ArrayList<String> getFilePathList(ArrayList<EssFile> essFileArrayList){
+        ArrayList<String> resultList = new ArrayList<>();
+        for (EssFile essFile:essFileArrayList) {
+            resultList.add(essFile.getAbsolutePath());
+        }
+        return resultList;
+    }
+
+
+    @Override
+    public String toString() {
+        return "EssFile{" +
+                "mFilePath='" + mFilePath + '\'' +
+                ", mimeType='" + mimeType + '\'' +
+                ", mFileName='" + mFileName + '\'' +
+                '}';
+    }
+    public static boolean isFolder(File file) {
+       return file.isDirectory();
+    }
+    public boolean isImage() {
+        if (mimeType == null) return false;
+        return mimeType.equals(MimeType.JPEG.toString())
+                || mimeType.equals(MimeType.PNG.toString())
+                || mimeType.equals(MimeType.GIF.toString())
+                || mimeType.equals(MimeType.BMP.toString())
+                || mimeType.equals(MimeType.WEBP.toString());
+    }
+
+    public boolean isGif() {
+        if (mimeType == null) return false;
+        return mimeType.equals(MimeType.GIF.toString());
+    }
+
+    public boolean isVideo() {
+        if (mimeType == null) return false;
+        return mimeType.equals(MimeType.MPEG.toString())
+                || mimeType.equals(MimeType.MP4.toString())
+                || mimeType.equals(MimeType.QUICKTIME.toString())
+                || mimeType.equals(MimeType.THREEGPP.toString())
+                || mimeType.equals(MimeType.THREEGPP2.toString())
+                || mimeType.equals(MimeType.MKV.toString())
+                || mimeType.equals(MimeType.WEBM.toString())
+                || mimeType.equals(MimeType.TS.toString())
+                || mimeType.equals(MimeType.AVI.toString());
+    }
+
+    public void setItemType(int itemType) {
+        this.itemType = itemType;
+    }
+
+    public int getItemType() {
+        return itemType;
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeString(mFilePath);
+        dest.writeString(mimeType);
+        dest.writeString(childFolderCount);
+        dest.writeString(childFileCount);
+        dest.writeByte((byte) (isChecked ? 1 : 0));
+        dest.writeByte((byte) (isExits ? 1 : 0));
+        dest.writeByte((byte) (isDirectory ? 1 : 0));
+        dest.writeByte((byte) (isFile ? 1 : 0));
+        dest.writeString(mFileName);
+        dest.writeParcelable(uri, flags);
+        dest.writeInt(itemType);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (!(obj instanceof EssFile)) {
+            return false;
+        }
+
+        EssFile other = (EssFile) obj;
+        if (uri == null) {
+            return mFilePath.equalsIgnoreCase(other.getAbsolutePath());
+        } else {
+            return uri.equals(other.getUri());
+        }
+    }
+
+    @Override
+    public int hashCode() {
+        int result = mFilePath != null ? mFilePath.hashCode() : 0;
+        result = 31 * result + (uri != null ? uri.hashCode() : 0);
+        result = 31 * result + itemType;
+        return result;
+    }
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/bean/EssFileCountCallBack.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/bean/EssFileCountCallBack.java
new file mode 100644
index 0000000..609f04f
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/bean/EssFileCountCallBack.java
@@ -0,0 +1,10 @@
+package com.zlylib.fileselectorlib.bean;
+
+/**
+ * EssFileCountCallBack
+ * Created by zhangliyang on 2018/3/5.
+ */
+
+public interface EssFileCountCallBack {
+    void onFindChildFileAndFolderCount(int position, String childFileCount, String childFolderCount);
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/bean/EssFileFilter.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/bean/EssFileFilter.java
new file mode 100644
index 0000000..2b1c8e9
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/bean/EssFileFilter.java
@@ -0,0 +1,34 @@
+package com.zlylib.fileselectorlib.bean;
+
+import java.io.File;
+import java.io.FileFilter;
+
+/**
+ * EssFileFilter
+ * 不显示隐藏文件、文件夹
+ */
+public class EssFileFilter implements FileFilter {
+    private String[] mTypes;
+
+    public EssFileFilter(String[] types) {
+        this.mTypes = types;
+    }
+
+    @Override
+    public boolean accept(File file) {
+        if (file.isDirectory() && !file.isHidden()) {
+            return true;
+        }
+        if (mTypes != null && mTypes.length > 0) {
+            for (String mType : mTypes) {
+                if ((file.getName().endsWith(mType.toLowerCase()) || file.getName().endsWith(mType.toUpperCase())) && !file.isHidden()) {
+//                if (FileUtils.getMimeType(file.getAbsolutePath()).equalsIgnoreCase(MimeTypeMap.getSingleton().getMimeTypeFromExtension(mType))) {
+                    return true;
+                }
+            }
+        }else {
+            return true;
+        }
+        return false;
+    }
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/bean/EssFileListCallBack.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/bean/EssFileListCallBack.java
new file mode 100644
index 0000000..a5c035b
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/bean/EssFileListCallBack.java
@@ -0,0 +1,12 @@
+package com.zlylib.fileselectorlib.bean;
+
+import java.util.List;
+
+/**
+ * EssFileListCallBack
+ * Created by zhangliyang on 2018/3/5.
+ */
+
+public interface EssFileListCallBack {
+    void onFindFileList(String queryPath, List<EssFile> essFileList);
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/core/EssFileCountTask.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/core/EssFileCountTask.java
new file mode 100644
index 0000000..b1c61b9
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/core/EssFileCountTask.java
@@ -0,0 +1,61 @@
+package com.zlylib.fileselectorlib.core;
+
+import android.os.AsyncTask;
+
+import com.zlylib.fileselectorlib.bean.EssFile;
+import com.zlylib.fileselectorlib.bean.EssFileCountCallBack;
+import com.zlylib.fileselectorlib.bean.EssFileFilter;
+
+import java.io.File;
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * EssFileCountTask
+ * Created by zhangliyang on 2020/6/20.
+ */
+
+public class EssFileCountTask extends AsyncTask<Void,Void,Void>{
+
+    private int position;
+    private String queryPath;
+    private String[] types;
+    private EssFileCountCallBack countCallBack;
+    private int childFileCount = 0;
+    private int childFolderCount = 0;
+    private Boolean isSelectFolder = false;
+
+    public EssFileCountTask(int position, String queryPath, String[] types, Boolean isSelectFolder, EssFileCountCallBack countCallBack) {
+        this.position = position;
+        this.queryPath = queryPath;
+        this.types = types;
+        this.isSelectFolder = isSelectFolder;
+        this.countCallBack = countCallBack;
+    }
+
+    @Override
+    protected Void doInBackground(Void... voids) {
+        File file = new File(queryPath);
+        File[] files = file.listFiles(new EssFileFilter(types));
+        if(files == null){
+            return null;
+        }
+        List<EssFile> fileList = EssFile.getEssFileList(Arrays.asList(files),isSelectFolder);
+        for (EssFile essFile :
+                fileList) {
+            if(essFile.isDirectory()){
+                childFolderCount++;
+            }else {
+                childFileCount++;
+            }
+        }
+        return null;
+    }
+
+    @Override
+    protected void onPostExecute(Void aVoid) {
+        if(countCallBack!=null){
+            countCallBack.onFindChildFileAndFolderCount(position,String.valueOf(childFileCount),String.valueOf(childFolderCount));
+        }
+    }
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/core/EssFileListTask.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/core/EssFileListTask.java
new file mode 100644
index 0000000..45e34ed
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/core/EssFileListTask.java
@@ -0,0 +1,92 @@
+package com.zlylib.fileselectorlib.core;
+
+import android.os.AsyncTask;
+
+import com.zlylib.fileselectorlib.bean.EssFile;
+import com.zlylib.fileselectorlib.bean.EssFileFilter;
+import com.zlylib.fileselectorlib.bean.EssFileListCallBack;
+import com.zlylib.fileselectorlib.utils.FileUtils;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * EssFileListTask
+ * Created by zhangliyang on 2018/3/5.
+ */
+
+public class EssFileListTask extends AsyncTask<Void,Void,List<EssFile>> {
+
+    private List<EssFile> mSelectedFileList;
+    private String queryPath;
+    private String[] types;
+    private int mSortType;
+    private EssFileListCallBack callBack;
+    private Boolean isSelectFolder = false;
+
+    public EssFileListTask(List<EssFile> mSelectedFileList, String queryPath, String[] types, int mSortType, Boolean isSelectFolder, EssFileListCallBack fileCallBack) {
+        this.mSelectedFileList = mSelectedFileList;
+        this.queryPath = queryPath;
+        this.types = types;
+        this.mSortType = mSortType;
+        this.isSelectFolder = isSelectFolder;
+        this.callBack = fileCallBack;
+    }
+
+    @Override
+    protected List<EssFile> doInBackground(Void... voids) {
+        File file = new File(queryPath);
+        File[] files = file.listFiles(new EssFileFilter(types));
+        if(files == null){
+            return new ArrayList<>();
+        }
+        List<File> fileList = Arrays.asList(files);
+        if(mSortType == FileUtils.BY_NAME_ASC){
+            Collections.sort(fileList, new FileUtils.SortByName());
+        }else if(mSortType == FileUtils.BY_NAME_DESC){
+            Collections.sort(fileList, new FileUtils.SortByName());
+            Collections.reverse(fileList);
+        }else if(mSortType == FileUtils.BY_TIME_ASC){
+            Collections.sort(fileList,new FileUtils.SortByTime());
+        }else if(mSortType == FileUtils.BY_TIME_DESC){
+            Collections.sort(fileList,new FileUtils.SortByTime());
+            Collections.reverse(fileList);
+        }else if(mSortType == FileUtils.BY_SIZE_ASC){
+            Collections.sort(fileList,new FileUtils.SortBySize());
+        }else if(mSortType == FileUtils.BY_SIZE_DESC){
+            Collections.sort(fileList,new FileUtils.SortBySize());
+            Collections.reverse(fileList);
+        }else if(mSortType == FileUtils.BY_EXTENSION_ASC){
+            Collections.sort(fileList,new FileUtils.SortByExtension());
+        }else if(mSortType == FileUtils.BY_EXTENSION_DESC){
+            Collections.sort(fileList,new FileUtils.SortByExtension());
+            Collections.reverse(fileList);
+        }
+        List<EssFile> tempFileList = EssFile.getEssFileList(fileList,isSelectFolder);
+        for (EssFile selectedFile :
+                mSelectedFileList) {
+            for (int i = 0; i < tempFileList.size(); i++) {
+                if (selectedFile.getAbsolutePath().equals(tempFileList.get(i).getAbsolutePath())) {
+                    tempFileList.get(i).setChecked(true);
+                    break;
+                }
+            }
+        }
+        return tempFileList;
+    }
+
+    @Override
+    protected void onPreExecute() {
+        super.onPreExecute();
+    }
+
+    @Override
+    protected void onPostExecute(List<EssFile> essFileList) {
+        if(callBack!=null){
+            callBack.onFindFileList(queryPath,essFileList);
+        }
+    }
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/ui/FileSelectorActivity.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/ui/FileSelectorActivity.java
new file mode 100644
index 0000000..d28da17
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/ui/FileSelectorActivity.java
@@ -0,0 +1,359 @@
+package com.zlylib.fileselectorlib.ui;
+
+import android.annotation.SuppressLint;
+import android.content.Intent;
+import android.graphics.Color;
+import android.os.Bundle;
+import android.os.Environment;
+import android.text.TextUtils;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.PopupWindow;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+
+import com.chad.library.adapter.base.BaseQuickAdapter;
+import com.chad.library.adapter.base.listener.OnItemChildClickListener;
+import com.chad.library.adapter.base.listener.OnItemClickListener;
+import com.google.android.material.snackbar.Snackbar;
+import com.zlylib.fileselectorlib.R;
+import com.zlylib.fileselectorlib.SelectOptions;
+import com.zlylib.fileselectorlib.adapter.BreadAdapter;
+import com.zlylib.fileselectorlib.adapter.FileListAdapter;
+import com.zlylib.fileselectorlib.adapter.SelectSdcardAdapter;
+import com.zlylib.fileselectorlib.bean.BreadModel;
+import com.zlylib.fileselectorlib.bean.EssFile;
+import com.zlylib.fileselectorlib.bean.EssFileCountCallBack;
+import com.zlylib.fileselectorlib.bean.EssFileListCallBack;
+import com.zlylib.fileselectorlib.core.EssFileCountTask;
+import com.zlylib.fileselectorlib.core.EssFileListTask;
+import com.zlylib.fileselectorlib.utils.Const;
+import com.zlylib.fileselectorlib.utils.FileUtils;
+import com.zlylib.fileselectorlib.utils.LogUtils;
+import com.zlylib.titlebarlib.ActionBarCommon;
+import com.zlylib.titlebarlib.OnActionBarChildClickListener;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+
+public class FileSelectorActivity extends AppCompatActivity implements OnItemClickListener, OnItemChildClickListener,
+        View.OnClickListener, FileListAdapter.onLoadFileCountListener, EssFileListCallBack, EssFileCountCallBack {
+
+    /*当前目录，默认是SD卡根目录*/
+    private String mCurFolder = Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator;
+    /*是否刚才切换了SD卡路径*/
+    private boolean mHasChangeSdCard = false;
+    /*所有可访问存储设备列表*/
+    private List<String> mSdCardList;
+    private ActionBarCommon abc;
+    private RecyclerView mRecyclerView;
+    private RecyclerView mBreadRecyclerView;
+    private ImageView mImbSelectSdCard;
+    /**
+     * 已选中的文件列表
+     */
+    private ArrayList<EssFile> mSelectedFileList = new ArrayList<>();// 全部信息列表
+    private ArrayList<String> mSelectedList = new ArrayList<>();//地址信息列表
+    /*当前选中排序方式的位置*/
+    private int mSelectSortTypeIndex = 0;
+    private BreadAdapter mBreadAdapter;
+    private FileListAdapter mAdapter;
+
+    private EssFileListTask essFileListTask;
+    private EssFileCountTask essFileCountTask;
+
+    private PopupWindow mSelectSdCardWindow;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_select_file);
+        mSdCardList = FileUtils.getAllSdPaths(this);
+        if (!mSdCardList.isEmpty()) {
+            mCurFolder = mSdCardList.get(0) + File.separator;
+            if(FileUtils.exist(SelectOptions.getInstance().getTargetPath())){
+                mCurFolder = SelectOptions.getInstance().getTargetPath();
+            }
+        }
+
+
+        initUi();
+        initData();
+    }
+
+    @SuppressLint("ResourceAsColor")
+    private void initUi() {
+        abc = findViewById(R.id.abc);
+        if (SelectOptions.getInstance().getTitleBg() != 0) {
+            abc.setBackgroundColor(getResources().getColor(SelectOptions.getInstance().getTitleBg()));
+        }
+        if (SelectOptions.getInstance().getTitleColor() != 0) {
+            abc.getTitleTextView().setTextColor(getResources().getColor(SelectOptions.getInstance().getTitleColor()));
+        }
+        if (SelectOptions.getInstance().getTitleLiftColor() != 0) {
+            abc.getLeftIconView().setColorFilter(getResources().getColor(SelectOptions.getInstance().getTitleLiftColor()));
+        }
+        if (SelectOptions.getInstance().getTitleRightColor() != 0) {
+            abc.getRightTextView().setTextColor(getResources().getColor(SelectOptions.getInstance().getTitleRightColor()));
+        }
+        abc.setOnLeftIconClickListener(new OnActionBarChildClickListener() {
+            @Override
+            public void onClick(View v) {
+                onBackPressed();
+            }
+        });
+        abc.setOnRightTextClickListener(new OnActionBarChildClickListener() {
+            @Override
+            public void onClick(View v) {
+                if (SelectOptions.getInstance().isOnlySelectFolder()) {
+                    mSelectedList.add(mCurFolder);
+                }
+                //选中
+                if (mSelectedList.isEmpty()) {
+                    return;
+                }
+                //不为空，向main activity返回数据
+                Intent result = new Intent();
+                result.putStringArrayListExtra(Const.EXTRA_RESULT_SELECTION, mSelectedList);
+                setResult(RESULT_OK, result);
+                finish();
+            }
+        });
+        if (SelectOptions.getInstance().isOnlyShowFolder()) {
+            abc.getRightTextView().setText("选中");
+        }
+        mRecyclerView = findViewById(R.id.rcv_file_list);
+        mBreadRecyclerView = findViewById(R.id.breadcrumbs_view);
+        mImbSelectSdCard = findViewById(R.id.imb_select_sdcard);
+        mImbSelectSdCard.setOnClickListener(this);
+        if (!mSdCardList.isEmpty() && mSdCardList.size() > 1) {
+            mImbSelectSdCard.setVisibility(View.VISIBLE);
+        }
+
+        mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
+        mAdapter = new FileListAdapter(new ArrayList<EssFile>());
+        mAdapter.setLoadFileCountListener(this);
+        mRecyclerView.setAdapter(mAdapter);
+        mAdapter.onAttachedToRecyclerView(mRecyclerView);
+        mAdapter.setOnItemClickListener(this);
+        List<BreadModel> breadModelList = FileUtils.getBreadModeListFromPath(mSdCardList, mCurFolder);
+        mBreadRecyclerView.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false));
+        mBreadAdapter = new BreadAdapter(breadModelList);
+        mBreadRecyclerView.setAdapter(mBreadAdapter);
+        mBreadAdapter.onAttachedToRecyclerView(mBreadRecyclerView);
+        mBreadAdapter.setOnItemChildClickListener(this);
+
+    }
+
+    private void initData() {
+        executeListTask(mSelectedFileList, mCurFolder, SelectOptions.getInstance().getFileTypes(), SelectOptions.getInstance().getSortType());
+    }
+
+    private void executeListTask(List<EssFile> essFileList, String queryPath, String[] types, int sortType) {
+        essFileListTask = new EssFileListTask(essFileList, queryPath, types, sortType, SelectOptions.getInstance().isOnlyShowFolder(), this);
+        essFileListTask.execute();
+    }
+
+    @Override
+    public void onClick(View view) {
+        if (view.getId() == R.id.imb_select_sdcard) {
+            showPopupWindow();
+        }
+    }
+
+    /**
+     * 显示选择SdCard的PopupWindow
+     * 点击其他区域隐藏，阴影
+     */
+    private void showPopupWindow() {
+        if (mSelectSdCardWindow != null) {
+            mSelectSdCardWindow.showAsDropDown(mImbSelectSdCard);
+            return;
+        }
+        View popView = LayoutInflater.from(this).inflate(R.layout.pop_select_sdcard, null);
+        mSelectSdCardWindow = new PopupWindow(popView, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
+        mSelectSdCardWindow.setFocusable(true);
+        mSelectSdCardWindow.setOutsideTouchable(true);
+        RecyclerView recyclerView = popView.findViewById(R.id.rcv_pop_select_sdcard);
+        recyclerView.setLayoutManager(new LinearLayoutManager(this));
+        final SelectSdcardAdapter adapter = new SelectSdcardAdapter(FileUtils.getAllSdCardList(mSdCardList));
+        recyclerView.setAdapter(adapter);
+        adapter.onAttachedToRecyclerView(recyclerView);
+        adapter.setOnItemClickListener(new OnItemClickListener() {
+            @Override
+            public void onItemClick(BaseQuickAdapter adapterIn, View view, int position) {
+                mSelectSdCardWindow.dismiss();
+                mHasChangeSdCard = true;
+                executeListTask(mSelectedFileList, FileUtils.getChangeSdCard(adapter.getData().get(position), mSdCardList), SelectOptions.getInstance().getFileTypes(), SelectOptions.getInstance().getSortType());
+            }
+        });
+        mSelectSdCardWindow.showAsDropDown(mImbSelectSdCard);
+    }
+
+    @Override
+    public void onItemChildClick(BaseQuickAdapter adapter, View view, int position) {
+        if (adapter.equals(mBreadAdapter) && view.getId() == R.id.btn_bread) {
+            //点击某个路径时
+            String queryPath = FileUtils.getBreadModelListByPosition(mSdCardList, mBreadAdapter.getData(), position);
+            if (mCurFolder.equals(queryPath)) {
+                return;
+            }
+            executeListTask(mSelectedFileList, queryPath, SelectOptions.getInstance().getFileTypes(), SelectOptions.getInstance().getSortType());
+        }
+    }
+
+    @Override
+    public void onItemClick(BaseQuickAdapter adapter, View view, final int position) {
+        if (adapter.equals(mAdapter)) {
+            EssFile item = mAdapter.getData().get(position);
+
+            if (item.isDirectory()) {
+                //点击文件夹
+                //保存当前的垂直滚动位置
+                mBreadAdapter.getData().get(mBreadAdapter.getData().size() - 1).setPrePosition(mRecyclerView.computeVerticalScrollOffset());
+                executeListTask(mSelectedFileList, mCurFolder + item.getName() + File.separator, SelectOptions.getInstance().getFileTypes(), SelectOptions.getInstance().getSortType());
+            } else {
+                //选中某文件后，判断是否只能选择文件夹
+                if (SelectOptions.getInstance().isOnlySelectFolder()) {
+                    if (!item.getFile().isDirectory()) {
+                        Snackbar.make(mRecyclerView, "您只能选择文件夹", Snackbar.LENGTH_SHORT).show();
+                    }
+                    return;
+                }
+//                if (SelectOptions.getInstance().isSingle) {
+//                    mSelectedFileList.add(item);
+//                    mSelectedList.add(item.getAbsolutePath());
+//                    Intent result = new Intent();
+//                    result.putParcelableArrayListExtra(Const.EXTRA_RESULT_SELECTION, mSelectedFileList);
+//                    setResult(RESULT_OK, result);
+//                    super.onBackPressed();
+//                    return;
+//                }
+                //选中某文件后，判断是否单选
+                if (SelectOptions.getInstance().isSingle) {
+                    mSelectedFileList.add(item);
+                    mSelectedList.add(item.getAbsolutePath());
+                    Intent result = new Intent();
+                    result.putStringArrayListExtra(Const.EXTRA_RESULT_SELECTION, mSelectedList);
+                    setResult(RESULT_OK, result);
+                    finish();
+                }
+                if (mAdapter.getData().get(position).isChecked()) {
+                    int index = findFileIndex(item);
+                    if (index != -1) {
+                        mSelectedFileList.remove(index);
+                        mSelectedList.remove(index);
+                    }
+                } else {
+                    if (mSelectedFileList.size() >= SelectOptions.getInstance().maxCount) {
+                        //超出最大可选择数量后
+                        Snackbar.make(mRecyclerView, "您最多只能选择" + SelectOptions.getInstance().maxCount + "个。", Snackbar.LENGTH_SHORT).show();
+                        return;
+                    }
+                    mSelectedFileList.add(item);
+                    mSelectedList.add(item.getAbsolutePath());
+                }
+                mAdapter.getData().get(position).setChecked(!mAdapter.getData().get(position).isChecked());
+                // mAdapter.notifyItemChanged(position, "");
+                mAdapter.notifyDataSetChanged();
+                abc.getRightTextView().setText(String.format(getString(R.string.selected_file_count), String.valueOf(mSelectedFileList.size()), String.valueOf(SelectOptions.getInstance().maxCount)));
+            }
+        }
+    }
+
+    /**
+     * 查找文件位置
+     */
+    private int findFileIndex(EssFile item) {
+        for (int i = 0; i < mSelectedFileList.size(); i++) {
+            if (mSelectedFileList.get(i).getAbsolutePath().equals(item.getAbsolutePath())) {
+                return i;
+            }
+        }
+        return -1;
+    }
+
+    @Override
+    public void onLoadFileCount(int posistion) {
+        essFileCountTask = new EssFileCountTask(posistion, mAdapter.getData().get(posistion).getAbsolutePath(), SelectOptions.getInstance().getFileTypes(), SelectOptions.getInstance().isOnlyShowFolder(), this);
+        essFileCountTask.execute();
+    }
+
+    /**
+     * 查找到文件列表后
+     *
+     * @param queryPath 查询路径
+     * @param fileList  文件列表
+     */
+    @Override
+    public void onFindFileList(String queryPath, List<EssFile> fileList) {
+        if (fileList.isEmpty()) {
+            mAdapter.setEmptyView(R.layout.empty_file_list);
+        }
+        mCurFolder = queryPath;
+        mAdapter.setNewInstance(fileList);
+        List<BreadModel> breadModelList = FileUtils.getBreadModeListFromPath(mSdCardList, mCurFolder);
+        if (mHasChangeSdCard) {
+            mBreadAdapter.setNewInstance(breadModelList);
+            mHasChangeSdCard = false;
+        } else {
+            if (breadModelList.size() > mBreadAdapter.getData().size()) {
+                //新增
+                List<BreadModel> newList = BreadModel.getNewBreadModel(mBreadAdapter.getData(), breadModelList);
+                mBreadAdapter.addData(newList);
+            } else {
+                //减少
+                int removePosition = BreadModel.getRemovedBreadModel(mBreadAdapter.getData(), breadModelList);
+                if (removePosition > 0) {
+                    mBreadAdapter.setNewData(mBreadAdapter.getData().subList(0, removePosition));
+                }
+            }
+        }
+
+        mBreadRecyclerView.smoothScrollToPosition(mBreadAdapter.getItemCount() - 1);
+        //先让其滚动到顶部，然后再scrollBy，滚动到之前保存的位置
+        mRecyclerView.scrollToPosition(0);
+        int scrollYPosition = mBreadAdapter.getData().get(mBreadAdapter.getData().size() - 1).getPrePosition();
+        //恢复之前的滚动位置
+        mRecyclerView.scrollBy(0, scrollYPosition);
+    }
+
+    @Override
+    public void onFindChildFileAndFolderCount(int position, String childFileCount, String childFolderCount) {
+        mAdapter.getData().get(position).setChildCounts(childFileCount, childFolderCount);
+        // mAdapter.notifyItemChanged(position, "childCountChanges");
+        mAdapter.notifyDataSetChanged();
+    }
+
+    @Override
+    public void onBackPressed() {
+        if (!FileUtils.canBackParent(mCurFolder, mSdCardList)) {
+            super.onBackPressed();
+            return;
+        }
+        executeListTask(mSelectedFileList, new File(mCurFolder).getParentFile().getAbsolutePath() + File.separator, SelectOptions.getInstance().getFileTypes(), SelectOptions.getInstance().getSortType());
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        // TODO: 2019/3/12 暂时移除
+//        EventBus.getDefault().unregister(this);
+        if (essFileListTask != null) {
+            essFileListTask.cancel(true);
+        }
+        if (essFileCountTask != null) {
+            essFileCountTask.cancel(true);
+        }
+
+    }
+
+
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/Const.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/Const.java
new file mode 100644
index 0000000..3b0ed31
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/Const.java
@@ -0,0 +1,98 @@
+package com.zlylib.fileselectorlib.utils;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Const
+ * Created by zhangliyang on 2020/6/20.
+ */
+
+public class Const {
+
+    public static Map<String, String> mimeTypeMap = null;
+
+    static {
+        mimeTypeMap = new HashMap<>();
+        mimeTypeMap.put("apk","application/vnd.android.package-archive");
+        mimeTypeMap.put("asf", "video/x-ms-asf");
+        mimeTypeMap.put("avi", "video/x-msvideo");
+        mimeTypeMap.put("bin", "application/octet-stream");
+        mimeTypeMap.put("bmp", "image/bmp");
+        mimeTypeMap.put("c", "text/plain");
+        mimeTypeMap.put("class", "application/octet-stream");
+        mimeTypeMap.put("conf", "text/plain");
+        mimeTypeMap.put("cpp", "text/plain");
+        mimeTypeMap.put("doc", "application/msword");
+        mimeTypeMap.put("docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document");
+        mimeTypeMap.put("xls", "application/vnd.ms-excel");
+        mimeTypeMap.put("xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
+        mimeTypeMap.put("exe", "application/octet-stream");
+        mimeTypeMap.put("gif", "image/gif");
+        mimeTypeMap.put("gtar", "application/x-gtar");
+        mimeTypeMap.put("gz", "application/x-gzip");
+        mimeTypeMap.put("h", "text/plain");
+        mimeTypeMap.put("htm", "text/html");
+        mimeTypeMap.put("html", "text/html");
+        mimeTypeMap.put("jar", "application/java-archive");
+        mimeTypeMap.put("java", "text/plain");
+        mimeTypeMap.put("jpeg", "image/jpeg");
+        mimeTypeMap.put("jpg", "image/jpeg");
+        mimeTypeMap.put("js", "application/x-javascript");
+        mimeTypeMap.put("log", "text/plain");
+        mimeTypeMap.put("m3u", "audio/x-mpegurl");
+        mimeTypeMap.put("m4a", "audio/mp4a-latm");
+        mimeTypeMap.put("m4b", "audio/mp4a-latm");
+        mimeTypeMap.put("m4p", "audio/mp4a-latm");
+        mimeTypeMap.put("m4u", "video/vnd.mpegurl");
+        mimeTypeMap.put("m4v", "video/x-m4v");
+        mimeTypeMap.put("mov", "video/quicktime");
+        mimeTypeMap.put("mp2", "audio/x-mpeg");
+        mimeTypeMap.put("mp3", "audio/mpeg");
+        mimeTypeMap.put("mp4", "video/mp4");
+        mimeTypeMap.put("mpc", "application/vnd.mpohun.certificate");
+        mimeTypeMap.put("mpe", "video/mpeg");
+        mimeTypeMap.put("mpeg", "video/mpeg");
+        mimeTypeMap.put("mpg", "video/mpeg");
+        mimeTypeMap.put("mpg4", "video/mp4");
+        mimeTypeMap.put("mpga", "audio/mpeg");
+        mimeTypeMap.put("msg", "application/vnd.ms-outlook");
+        mimeTypeMap.put("ogg", "audio/ogg");
+        mimeTypeMap.put("pdf", "application/pdf");
+        mimeTypeMap.put("png", "image/png");
+        mimeTypeMap.put("pps", "application/vnd.ms-powerpoint");
+        mimeTypeMap.put("ppt", "application/vnd.ms-powerpoint");
+        mimeTypeMap.put("pptx", "application/vnd.openxmlformats-officedocument.presentationml.presentation");
+        mimeTypeMap.put("prop", "text/plain");
+        mimeTypeMap.put("rc", "text/plain");
+        mimeTypeMap.put("rmvb", "audio/x-pn-realaudio");
+        mimeTypeMap.put("rtf", "application/rtf");
+        mimeTypeMap.put("sh", "text/plain");
+        mimeTypeMap.put("tar", "application/x-tar");
+        mimeTypeMap.put("tgz", "application/x-compressed");
+        mimeTypeMap.put("txt", "text/plain");
+        mimeTypeMap.put("wav", "audio/x-wav");
+        mimeTypeMap.put("wma", "audio/x-ms-wma");
+        mimeTypeMap.put("wmv", "audio/x-ms-wmv");
+        mimeTypeMap.put("wps", "application/vnd.ms-works");
+        mimeTypeMap.put("xml", "text/plain");
+        mimeTypeMap.put("z", "application/x-compress");
+        mimeTypeMap.put("zip", "application/x-zip-compressed");
+        mimeTypeMap.put("", "*/*");
+    }
+
+    /*文件类型*/
+    public static final String EXTRA_KEY_FILE_TYPE = "EXTRA_KEY_FILE_TYPE";
+    /*排序类型*/
+    public static final String EXTRA_KEY_SORT_TYPE = "EXTRA_KEY_SORT_TYPE";
+    /*是否多选*/
+    public static final String EXTRA_KEY_IS_SINGLE = "EXTRA_KEY_IS_SINGLE";
+    /*最大可选择数量*/
+    public static final String EXTRA_KEY_MAX_COUNT = "EXTRA_KEY_MAX_COUNT";
+    public static final String EXTRA_KEY_OnSelectFileListener = "EXTRA_KEY_OnSelectFileListener";
+
+    public static final String EXTRA_RESULT_SELECTION = "extra_result_selection";
+
+
+
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/ConvertUtils.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/ConvertUtils.java
new file mode 100644
index 0000000..ebe997b
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/ConvertUtils.java
@@ -0,0 +1,636 @@
+package com.zlylib.fileselectorlib.utils;
+
+import android.annotation.TargetApi;
+import android.content.ContentUris;
+import android.content.Context;
+import android.content.res.ColorStateList;
+import android.content.res.Resources;
+import android.database.Cursor;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.drawable.ColorDrawable;
+import android.graphics.drawable.Drawable;
+import android.graphics.drawable.NinePatchDrawable;
+import android.net.Uri;
+import android.os.Build;
+import android.os.Environment;
+import android.provider.DocumentsContract;
+import android.provider.MediaStore;
+import android.text.TextUtils;
+import android.view.View;
+import android.widget.ListView;
+import android.widget.ScrollView;
+
+import androidx.annotation.ColorInt;
+import androidx.annotation.FloatRange;
+
+import java.io.BufferedReader;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.UnsupportedEncodingException;
+import java.nio.ByteBuffer;
+import java.text.DecimalFormat;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Locale;
+
+/**
+ * 数据类型转换、单位转换
+ *
+ * @author zhangliyang
+ * @since 2014-4-18
+ */
+public class ConvertUtils {
+    public static final long GB = 1073741824;
+    public static final long MB = 1048576;
+    public static final long KB = 1024;
+
+    public static int toInt(Object obj) {
+        try {
+            return Integer.parseInt(obj.toString());
+        } catch (NumberFormatException e) {
+            return -1;
+        }
+    }
+
+    public static int toInt(byte[] bytes) {
+        int result = 0;
+        byte abyte;
+        for (int i = 0; i < bytes.length; i++) {
+            abyte = bytes[i];
+            result += (abyte & 0xFF) << (8 * i);
+        }
+        return result;
+    }
+
+    public static int toShort(byte first, byte second) {
+        return (first << 8) + (second & 0xFF);
+    }
+
+    public static long toLong(Object obj) {
+        try {
+            return Long.parseLong(obj.toString());
+        } catch (NumberFormatException e) {
+            return -1L;
+        }
+    }
+
+    public static float toFloat(Object obj) {
+        try {
+            return Float.parseFloat(obj.toString());
+        } catch (NumberFormatException e) {
+            return -1f;
+        }
+    }
+
+    /**
+     * int占4字节
+     *
+     * @param i the
+     * @return byte [ ]
+     */
+    public static byte[] toByteArray(int i) {
+        // byte[] bytes = new byte[4];
+        // bytes[0] = (byte) (0xff & i);
+        // bytes[1] = (byte) ((0xff00 & i) >> 8);
+        // bytes[2] = (byte) ((0xff0000 & i) >> 16);
+        // bytes[3] = (byte) ((0xff000000 & i) >> 24);
+        // return bytes;
+        return ByteBuffer.allocate(4).putInt(i).array();
+    }
+
+    public static byte[] toByteArray(String hexData, boolean isHex) {
+        if (hexData == null || hexData.equals("")) {
+            return null;
+        }
+        if (!isHex) {
+            return hexData.getBytes();
+        }
+        hexData = hexData.replaceAll("\\s+", "");
+        String hexDigits = "0123456789ABCDEF";
+        ByteArrayOutputStream baos = new ByteArrayOutputStream(
+                hexData.length() / 2);
+        // 将每2位16进制整数组装成一个字节
+        for (int i = 0; i < hexData.length(); i += 2) {
+            baos.write((hexDigits.indexOf(hexData.charAt(i)) << 4 | hexDigits
+                    .indexOf(hexData.charAt(i + 1))));
+        }
+        byte[] bytes = baos.toByteArray();
+        try {
+            baos.close();
+        } catch (IOException e) {
+            LogUtils.warn(e);
+        }
+        return bytes;
+    }
+
+    public static String toHexString(String str) {
+        if (TextUtils.isEmpty(str))
+            return "";
+        StringBuilder builder = new StringBuilder();
+        byte[] bytes = str.getBytes();
+        for (byte aByte : bytes) {
+            builder.append(Integer.toHexString(0xFF & aByte));
+            builder.append(" ");
+        }
+        return builder.toString();
+    }
+
+    /**
+     * To hex string string.
+     *
+     * @param bytes the bytes
+     * @return the string
+     */
+    public static String toHexString(byte... bytes) {
+        char[] DIGITS = {'0', '1', '2', '3', '4', '5', '6',
+                '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
+        // 参见：http://www.oschina.net/code/snippet_116768_9019
+        char[] buffer = new char[bytes.length * 2];
+        for (int i = 0, j = 0; i < bytes.length; ++i) {
+            int u = bytes[i] < 0 ? bytes[i] + 256 : bytes[i];//转无符号整型
+            buffer[j++] = DIGITS[u >>> 4];
+            buffer[j++] = DIGITS[u & 0xf];
+        }
+        return new String(buffer);
+    }
+
+    /**
+     * To hex string string.
+     *
+     * @param num the num
+     * @return the string
+     */
+    public static String toHexString(int num) {
+        String hexString = Integer.toHexString(num);
+        LogUtils.verbose(String.format(Locale.CHINA, "%d to hex string is %s", num, hexString));
+        return hexString;
+    }
+
+    /**
+     * To binary string string.
+     *
+     * @param bytes the bytes
+     * @return the string
+     */
+    public static String toBinaryString(byte... bytes) {
+        char[] DIGITS = {'0', '1', '2', '3', '4', '5', '6',
+                '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
+        // 参见：http://www.oschina.net/code/snippet_116768_9019
+        char[] buffer = new char[bytes.length * 8];
+        for (int i = 0, j = 0; i < bytes.length; ++i) {
+            int u = bytes[i] < 0 ? bytes[i] + 256 : bytes[i];//转无符号整型
+            buffer[j++] = DIGITS[(u >>> 7) & 0x1];
+            buffer[j++] = DIGITS[(u >>> 6) & 0x1];
+            buffer[j++] = DIGITS[(u >>> 5) & 0x1];
+            buffer[j++] = DIGITS[(u >>> 4) & 0x1];
+            buffer[j++] = DIGITS[(u >>> 3) & 0x1];
+            buffer[j++] = DIGITS[(u >>> 2) & 0x1];
+            buffer[j++] = DIGITS[(u >>> 1) & 0x1];
+            buffer[j++] = DIGITS[u & 0x1];
+        }
+        return new String(buffer);
+    }
+
+    /**
+     * To binary string string.
+     *
+     * @param num the num
+     * @return the string
+     */
+    public static String toBinaryString(int num) {
+        String binaryString = Integer.toBinaryString(num);
+        LogUtils.verbose(String.format(Locale.CHINA, "%d to binary string is %s", num, binaryString));
+        return binaryString;
+    }
+
+    public static String toSlashString(String str) {
+        String result = "";
+        char[] chars = str.toCharArray();
+        for (char chr : chars) {
+            if (chr == '"' || chr == '\'' || chr == '\\') {
+                result += "\\";//符合“"”“'”“\”这三个符号的前面加一个“\”
+            }
+            result += chr;
+        }
+        return result;
+    }
+
+    public static <T> T[] toArray(List<T> list) {
+        //noinspection unchecked
+        return (T[]) list.toArray();
+    }
+
+    public static <T> List<T> toList(T[] array) {
+        return Arrays.asList(array);
+    }
+
+    public static String toString(Object[] objects) {
+        return Arrays.deepToString(objects);
+    }
+
+    public static String toString(Object[] objects, String tag) {
+        StringBuilder sb = new StringBuilder();
+        for (Object object : objects) {
+            sb.append(object);
+            sb.append(tag);
+        }
+        return sb.toString();
+    }
+
+    public static byte[] toByteArray(InputStream is) {
+        if (is == null) {
+            return null;
+        }
+        try {
+            ByteArrayOutputStream os = new ByteArrayOutputStream();
+            byte[] buff = new byte[100];
+            while (true) {
+                int len = is.read(buff, 0, 100);
+                if (len == -1) {
+                    break;
+                } else {
+                    os.write(buff, 0, len);
+                }
+            }
+            byte[] bytes = os.toByteArray();
+            os.close();
+            is.close();
+            return bytes;
+        } catch (IOException e) {
+            LogUtils.warn(e);
+        }
+        return null;
+    }
+
+    public static byte[] toByteArray(Bitmap bitmap) {
+        if (bitmap == null) {
+            return null;
+        }
+        ByteArrayOutputStream os = new ByteArrayOutputStream();
+        // 将Bitmap压缩成PNG编码，质量为100%存储，除了PNG还有很多常见格式，如jpeg等。
+        bitmap.compress(Bitmap.CompressFormat.PNG, 100, os);
+        byte[] bytes = os.toByteArray();
+        try {
+            os.close();
+        } catch (IOException e) {
+            LogUtils.warn(e);
+        }
+        return bytes;
+    }
+
+    public static Bitmap toBitmap(byte[] bytes, int width, int height) {
+        Bitmap bitmap = null;
+        if (bytes.length != 0) {
+            try {
+                BitmapFactory.Options options = new BitmapFactory.Options();
+                // 不进行图片抖动处理
+                options.inDither = false;
+                // 设置让解码器以最佳方式解码
+                options.inPreferredConfig = null;
+                if (width > 0 && height > 0) {
+                    options.outWidth = width;
+                    options.outHeight = height;
+                }
+                bitmap = BitmapFactory.decodeByteArray(bytes, 0, bytes.length, options);
+                bitmap.setDensity(96);// 96 dpi
+            } catch (Exception e) {
+                LogUtils.error(e);
+            }
+        }
+        return bitmap;
+    }
+
+    public static Bitmap toBitmap(byte[] bytes) {
+        return toBitmap(bytes, -1, -1);
+    }
+
+    /**
+     * 将Drawable转换为Bitmap
+     * 参考：http://kylines.iteye.com/blog/1660184
+     */
+    public static Bitmap toBitmap(Drawable drawable) {
+        if (drawable instanceof BitmapDrawable) {
+            return ((BitmapDrawable) drawable).getBitmap();
+        } else if (drawable instanceof ColorDrawable) {
+            //color
+            Bitmap bitmap = Bitmap.createBitmap(32, 32, Bitmap.Config.ARGB_8888);
+            Canvas canvas = new Canvas(bitmap);
+            canvas.drawColor(((ColorDrawable) drawable).getColor());
+            return bitmap;
+        } else if (drawable instanceof NinePatchDrawable) {
+            //.9.png
+            Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(),
+                    drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
+            Canvas canvas = new Canvas(bitmap);
+            drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
+            drawable.draw(canvas);
+            return bitmap;
+        }
+        return null;
+    }
+
+    /**
+     * 从第三方文件选择器获取路径。
+     * 参见：http://blog.csdn.net/zbjdsbj/article/details/42387551
+     */
+    @TargetApi(Build.VERSION_CODES.KITKAT)
+    public static String toPath(Context context, Uri uri) {
+        if (uri == null) {
+            LogUtils.verbose("uri is null");
+            return "";
+        }
+        LogUtils.verbose("uri: " + uri.toString());
+        String path = uri.getPath();
+        String scheme = uri.getScheme();
+        String authority = uri.getAuthority();
+        //是否是4.4及以上版本
+        boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
+        // DocumentProvider
+        if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
+            String docId = DocumentsContract.getDocumentId(uri);
+            String[] split = docId.split(":");
+            String type = split[0];
+            Uri contentUri = null;
+            switch (authority) {
+                // ExternalStorageProvider
+                case "com.android.externalstorage.documents":
+                    if ("primary".equalsIgnoreCase(type)) {
+                        return Environment.getExternalStorageDirectory() + "/" + split[1];
+                    }
+                    break;
+                // DownloadsProvider
+                case "com.android.providers.downloads.documents":
+                    contentUri = ContentUris.withAppendedId(
+                            Uri.parse("content://downloads/public_downloads"), Long.valueOf(docId));
+                    return _queryPathFromMediaStore(context, contentUri, null, null);
+                // MediaProvider
+                case "com.android.providers.media.documents":
+                    if ("image".equals(type)) {
+                        contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
+                    } else if ("video".equals(type)) {
+                        contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
+                    } else if ("audio".equals(type)) {
+                        contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
+                    }
+                    String selection = "_id=?";
+                    String[] selectionArgs = new String[]{split[1]};
+                    return _queryPathFromMediaStore(context, contentUri, selection, selectionArgs);
+            }
+        }
+        // MediaStore (and general)
+        else {
+            if ("content".equalsIgnoreCase(scheme)) {
+                // Return the remote address
+                if (authority.equals("com.google.android.apps.photos.content")) {
+                    return uri.getLastPathSegment();
+                }
+                return _queryPathFromMediaStore(context, uri, null, null);
+            }
+            // File
+            else if ("file".equalsIgnoreCase(scheme)) {
+                return uri.getPath();
+            }
+        }
+        LogUtils.verbose("uri to path: " + path);
+        return path;
+    }
+
+    private static String _queryPathFromMediaStore(Context context, Uri uri, String selection, String[] selectionArgs) {
+        String filePath = null;
+        try {
+            String[] projection = {MediaStore.Images.Media.DATA};
+            Cursor cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
+            if (cursor != null) {
+                int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
+                cursor.moveToFirst();
+                filePath = cursor.getString(column_index);
+                cursor.close();
+            }
+        } catch (IllegalArgumentException e) {
+            LogUtils.error(e);
+        }
+        return filePath;
+    }
+
+    /**
+     * 把view转化为bitmap（截图）
+     * 参见：http://www.cnblogs.com/lee0oo0/p/3355468.html
+     */
+    public static Bitmap toBitmap(View view) {
+        int width = view.getWidth();
+        int height = view.getHeight();
+        if (view instanceof ListView) {
+            height = 0;
+            // 获取listView实际高度
+            ListView listView = (ListView) view;
+            for (int i = 0; i < listView.getChildCount(); i++) {
+                height += listView.getChildAt(i).getHeight();
+            }
+        } else if (view instanceof ScrollView) {
+            height = 0;
+            // 获取scrollView实际高度
+            ScrollView scrollView = (ScrollView) view;
+            for (int i = 0; i < scrollView.getChildCount(); i++) {
+                height += scrollView.getChildAt(i).getHeight();
+            }
+        }
+        view.setDrawingCacheEnabled(true);
+        view.clearFocus();
+        view.setPressed(false);
+        boolean willNotCache = view.willNotCacheDrawing();
+        view.setWillNotCacheDrawing(false);
+        // Reset the drawing cache background color to fully transparent for the duration of this operation
+        int color = view.getDrawingCacheBackgroundColor();
+        view.setDrawingCacheBackgroundColor(Color.WHITE);//截图去黑色背景(透明像素)
+        if (color != Color.WHITE) {
+            view.destroyDrawingCache();
+        }
+        view.buildDrawingCache();
+        Bitmap cacheBitmap = view.getDrawingCache();
+        if (cacheBitmap == null) {
+            return null;
+        }
+        Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
+        Canvas canvas = new Canvas(bitmap);
+        canvas.drawBitmap(cacheBitmap, 0, 0, null);
+        canvas.save(Canvas.ALL_SAVE_FLAG);
+        canvas.restore();
+        if (!bitmap.isRecycled()) {
+            LogUtils.verbose("recycle bitmap: " + bitmap.toString());
+            bitmap.recycle();
+        }
+        // Restore the view
+        view.destroyDrawingCache();
+        view.setWillNotCacheDrawing(willNotCache);
+        view.setDrawingCacheBackgroundColor(color);
+        return bitmap;
+    }
+
+    public static Drawable toDrawable(Bitmap bitmap) {
+        return bitmap == null ? null : new BitmapDrawable(Resources.getSystem(), bitmap);
+    }
+
+    public static byte[] toByteArray(Drawable drawable) {
+        return toByteArray(toBitmap(drawable));
+    }
+
+    public static Drawable toDrawable(byte[] bytes) {
+        return toDrawable(toBitmap(bytes));
+    }
+
+    /**
+     * dp转换为px
+     */
+    public static int toPx(Context context, float dpValue) {
+        final float scale = context.getResources().getDisplayMetrics().density;
+        int pxValue = (int) (dpValue * scale + 0.5f);
+        LogUtils.verbose(dpValue + " dp == " + pxValue + " px");
+        return pxValue;
+    }
+
+    /**
+     * px转换为dp
+     */
+    public static int toDp(Context context, float pxValue) {
+        final float scale = context.getResources().getDisplayMetrics().density;
+        int dpValue = (int) (pxValue / scale + 0.5f);
+        LogUtils.verbose(pxValue + " px == " + dpValue + " dp");
+        return dpValue;
+    }
+
+    /**
+     * px转换为sp
+     */
+    public static int toSp(Context context, float pxValue) {
+        final float fontScale = context.getResources().getDisplayMetrics().scaledDensity;
+        int spValue = (int) (pxValue / fontScale + 0.5f);
+        LogUtils.verbose(pxValue + " px == " + spValue + " sp");
+        return spValue;
+    }
+
+    public static String toGbk(String str) {
+        try {
+            return new String(str.getBytes("utf-8"), "gbk");
+        } catch (UnsupportedEncodingException e) {
+            LogUtils.warn(e);
+            return str;
+        }
+    }
+
+    public static String toFileSizeString(long fileSize) {
+        DecimalFormat df = new DecimalFormat("0.00");
+        String fileSizeString;
+        if (fileSize < KB) {
+            fileSizeString = fileSize + "B";
+        } else if (fileSize < MB) {
+            fileSizeString = df.format((double) fileSize / KB) + "K";
+        } else if (fileSize < GB) {
+            fileSizeString = df.format((double) fileSize / MB) + "M";
+        } else {
+            fileSizeString = df.format((double) fileSize / GB) + "G";
+        }
+        return fileSizeString;
+    }
+
+    public static String toString(InputStream is, String charset) {
+        StringBuilder sb = new StringBuilder();
+        try {
+            BufferedReader reader = new BufferedReader(new InputStreamReader(is, charset));
+            while (true) {
+                String line = reader.readLine();
+                if (line == null) {
+                    break;
+                } else {
+                    sb.append(line).append("\n");
+                }
+            }
+            reader.close();
+            is.close();
+        } catch (IOException e) {
+            LogUtils.error(e);
+        }
+        return sb.toString();
+    }
+
+    public static String toString(InputStream is) {
+        return toString(is, "utf-8");
+    }
+
+    public static int toDarkenColor(@ColorInt int color) {
+        return toDarkenColor(color, 0.8f);
+    }
+
+    public static int toDarkenColor(@ColorInt int color, @FloatRange(from = 0f, to = 1f) float value) {
+        float[] hsv = new float[3];
+        Color.colorToHSV(color, hsv);
+        hsv[2] *= value;//HSV指Hue、Saturation、Value，即色调、饱和度和亮度，此处表示修改亮度
+        return Color.HSVToColor(hsv);
+    }
+
+    /**
+     * 转换为6位十六进制颜色代码，不含“#”
+     */
+    public static String toColorString(@ColorInt int color) {
+        return toColorString(color, false);
+    }
+
+    /**
+     * 转换为6位十六进制颜色代码，不含“#”
+     */
+    public static String toColorString(@ColorInt int color, boolean includeAlpha) {
+        String alpha = Integer.toHexString(Color.alpha(color));
+        String red = Integer.toHexString(Color.red(color));
+        String green = Integer.toHexString(Color.green(color));
+        String blue = Integer.toHexString(Color.blue(color));
+        if (alpha.length() == 1) {
+            alpha = "0" + alpha;
+        }
+        if (red.length() == 1) {
+            red = "0" + red;
+        }
+        if (green.length() == 1) {
+            green = "0" + green;
+        }
+        if (blue.length() == 1) {
+            blue = "0" + blue;
+        }
+        String colorString;
+        if (includeAlpha) {
+            colorString = alpha + red + green + blue;
+            LogUtils.verbose(String.format(Locale.CHINA, "%d to color string is %s", color, colorString));
+        } else {
+            colorString = red + green + blue;
+            LogUtils.verbose(String.format(Locale.CHINA, "%d to color string is %s%s%s%s, exclude alpha is %s", color, alpha, red, green, blue, colorString));
+        }
+        return colorString;
+    }
+
+    /**
+     * 对TextView、Button等设置不同状态时其文字颜色。
+     * 参见：http://blog.csdn.net/sodino/article/details/6797821
+     * Modified by liyujiang at 2015.08.13
+     */
+    public static ColorStateList toColorStateList(@ColorInt int normalColor, @ColorInt int pressedColor,
+                                                  @ColorInt int focusedColor, @ColorInt int unableColor) {
+        int[] colors = new int[]{pressedColor, focusedColor, normalColor, focusedColor, unableColor, normalColor};
+        int[][] states = new int[6][];
+        states[0] = new int[]{android.R.attr.state_pressed, android.R.attr.state_enabled};
+        states[1] = new int[]{android.R.attr.state_enabled, android.R.attr.state_focused};
+        states[2] = new int[]{android.R.attr.state_enabled};
+        states[3] = new int[]{android.R.attr.state_focused};
+        states[4] = new int[]{android.R.attr.state_window_focused};
+        states[5] = new int[]{};
+        return new ColorStateList(states, colors);
+    }
+
+    public static ColorStateList toColorStateList(@ColorInt int normalColor, @ColorInt int pressedColor) {
+        return toColorStateList(normalColor, pressedColor, pressedColor, normalColor);
+    }
+
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/DateUtils.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/DateUtils.java
new file mode 100644
index 0000000..46da7a7
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/DateUtils.java
@@ -0,0 +1,236 @@
+package com.zlylib.fileselectorlib.utils;
+
+
+import androidx.annotation.IntDef;
+import androidx.annotation.NonNull;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Arrays;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.List;
+import java.util.Locale;
+
+/**
+ * 日期时间工具类
+ *
+ * @author zhangliyang
+ * @since 2015/8/5
+ */
+public class DateUtils extends android.text.format.DateUtils {
+    public static final int Second = 0;
+    public static final int Minute = 1;
+    public static final int Hour = 2;
+    public static final int Day = 3;
+
+    @IntDef(value = {Second, Minute, Hour, Day})
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface DifferenceMode {
+    }
+
+    public static long calculateDifferentSecond(Date startDate, Date endDate) {
+        return calculateDifference(startDate, endDate, Second);
+    }
+
+    public static long calculateDifferentMinute(Date startDate, Date endDate) {
+        return calculateDifference(startDate, endDate, Minute);
+    }
+
+    public static long calculateDifferentHour(Date startDate, Date endDate) {
+        return calculateDifference(startDate, endDate, Hour);
+    }
+
+    public static long calculateDifferentDay(Date startDate, Date endDate) {
+        return calculateDifference(startDate, endDate, Day);
+    }
+
+    public static long calculateDifferentSecond(long startTimeMillis, long endTimeMillis) {
+        return calculateDifference(startTimeMillis, endTimeMillis, Second);
+    }
+
+    public static long calculateDifferentMinute(long startTimeMillis, long endTimeMillis) {
+        return calculateDifference(startTimeMillis, endTimeMillis, Minute);
+    }
+
+    public static long calculateDifferentHour(long startTimeMillis, long endTimeMillis) {
+        return calculateDifference(startTimeMillis, endTimeMillis, Hour);
+    }
+
+    public static long calculateDifferentDay(long startTimeMillis, long endTimeMillis) {
+        return calculateDifference(startTimeMillis, endTimeMillis, Day);
+    }
+
+    /**
+     * 计算两个时间戳之间相差的时间戳数
+     */
+    public static long calculateDifference(long startTimeMillis, long endTimeMillis, @DifferenceMode int mode) {
+        return calculateDifference(new Date(startTimeMillis), new Date(endTimeMillis), mode);
+    }
+
+    /**
+     * 计算两个日期之间相差的时间戳数
+     */
+    public static long calculateDifference(Date startDate, Date endDate, @DifferenceMode int mode) {
+        long[] different = calculateDifference(startDate, endDate);
+        if (mode == Minute) {
+            return different[2];
+        } else if (mode == Hour) {
+            return different[1];
+        } else if (mode == Day) {
+            return different[0];
+        } else {
+            return different[3];
+        }
+    }
+
+    private static long[] calculateDifference(Date startDate, Date endDate) {
+        return calculateDifference(endDate.getTime() - startDate.getTime());
+    }
+
+    private static long[] calculateDifference(long differentMilliSeconds) {
+        long secondsInMilli = 1000;//1s==1000ms
+        long minutesInMilli = secondsInMilli * 60;
+        long hoursInMilli = minutesInMilli * 60;
+        long daysInMilli = hoursInMilli * 24;
+        long elapsedDays = differentMilliSeconds / daysInMilli;
+        differentMilliSeconds = differentMilliSeconds % daysInMilli;
+        long elapsedHours = differentMilliSeconds / hoursInMilli;
+        differentMilliSeconds = differentMilliSeconds % hoursInMilli;
+        long elapsedMinutes = differentMilliSeconds / minutesInMilli;
+        differentMilliSeconds = differentMilliSeconds % minutesInMilli;
+        long elapsedSeconds = differentMilliSeconds / secondsInMilli;
+        LogUtils.verbose(String.format(Locale.CHINA, "different: %d ms, %d days, %d hours, %d minutes, %d seconds",
+                differentMilliSeconds, elapsedDays, elapsedHours, elapsedMinutes, elapsedSeconds));
+        return new long[]{elapsedDays, elapsedHours, elapsedMinutes, elapsedSeconds};
+    }
+
+    /**
+     * 计算每月的天数
+     */
+    public static int calculateDaysInMonth(int month) {
+        return calculateDaysInMonth(0, month);
+    }
+
+    /**
+     * 根据年份及月份计算每月的天数
+     */
+    public static int calculateDaysInMonth(int year, int month) {
+        // 添加大小月月份并将其转换为list,方便之后的判断
+        String[] bigMonths = {"1", "3", "5", "7", "8", "10", "12"};
+        String[] littleMonths = {"4", "6", "9", "11"};
+        List<String> bigList = Arrays.asList(bigMonths);
+        List<String> littleList = Arrays.asList(littleMonths);
+        // 判断大小月及是否闰年,用来确定"日"的数据
+        if (bigList.contains(String.valueOf(month))) {
+            return 31;
+        } else if (littleList.contains(String.valueOf(month))) {
+            return 30;
+        } else {
+            if (year <= 0) {
+                return 29;
+            }
+            // 是否闰年
+            if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0) {
+                return 29;
+            } else {
+                return 28;
+            }
+        }
+    }
+
+    /**
+     * 月日时分秒，0-9前补0
+     */
+    @NonNull
+    public static String fillZero(int number) {
+        return number < 10 ? "0" + number : "" + number;
+    }
+
+    /**
+     * 截取掉前缀0以便转换为整数
+     *
+     * @see #fillZero(int)
+     */
+    public static int trimZero(@NonNull String text) {
+        try {
+            if (text.startsWith("0")) {
+                text = text.substring(1);
+            }
+            return Integer.parseInt(text);
+        } catch (NumberFormatException e) {
+            LogUtils.warn(e);
+            return 0;
+        }
+    }
+
+    /**
+     * 功能：判断日期是否和当前date对象在同一天。
+     * 参见：http://www.cnblogs.com/myzhijie/p/3330970.html
+     *
+     * @param date 比较的日期
+     * @return boolean 如果在返回true，否则返回false。
+     */
+    public static boolean isSameDay(Date date) {
+        if (date == null) {
+            throw new IllegalArgumentException("date is null");
+        }
+        Calendar nowCalendar = Calendar.getInstance();
+        Calendar newCalendar = Calendar.getInstance();
+        newCalendar.setTime(date);
+        return (nowCalendar.get(Calendar.ERA) == newCalendar.get(Calendar.ERA) &&
+                nowCalendar.get(Calendar.YEAR) == newCalendar.get(Calendar.YEAR) &&
+                nowCalendar.get(Calendar.DAY_OF_YEAR) == newCalendar.get(Calendar.DAY_OF_YEAR));
+    }
+
+    /**
+     * 将yyyy-MM-dd HH:mm:ss字符串转换成日期<br/>
+     *
+     * @param dateStr    时间字符串
+     * @param dataFormat 当前时间字符串的格式。
+     * @return Date 日期 ,转换异常时返回null。
+     */
+    public static Date parseDate(String dateStr, String dataFormat) {
+        try {
+            SimpleDateFormat dateFormat = new SimpleDateFormat(dataFormat, Locale.PRC);
+            Date date = dateFormat.parse(dateStr);
+            return new Date(date.getTime());
+        } catch (ParseException e) {
+            LogUtils.warn(e);
+            return null;
+        }
+    }
+
+    /**
+     * 将yyyy-MM-dd HH:mm:ss字符串转换成日期<br/>
+     *
+     * @param dateStr yyyy-MM-dd HH:mm:ss字符串
+     * @return Date 日期 ,转换异常时返回null。
+     */
+    public static Date parseDate(String dateStr) {
+        return parseDate(dateStr, "yyyy-MM-dd HH:mm:ss");
+    }
+
+    public static String getFileLastModifyTime(long time) {
+        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm", Locale.CHINA);
+        return formatter.format(time);
+    }
+
+    /**
+     * 将指定的日期转换为一定格式的字符串
+     */
+    public static String formatDate(Date date, String format) {
+        SimpleDateFormat sdf = new SimpleDateFormat(format, Locale.PRC);
+        return sdf.format(date);
+    }
+
+    /**
+     * 将当前日期转换为一定格式的字符串
+     */
+    public static String formatDate(String format) {
+        return formatDate(Calendar.getInstance(Locale.CHINA).getTime(), format);
+    }
+
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/FileSizeUtil.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/FileSizeUtil.java
new file mode 100644
index 0000000..19bcab2
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/FileSizeUtil.java
@@ -0,0 +1,153 @@
+package com.zlylib.fileselectorlib.utils;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.text.DecimalFormat;
+
+/**
+ * FileSizeUtil 计算文件大小，自动转换为b,kb,mb等
+ * Created by 李波 on 2018/2/7.
+ */
+
+public class FileSizeUtil {
+    private static final String TAG = FileSizeUtil.class.getSimpleName();
+
+    public static final int SIZETYPE_B = 1;//获取文件大小单位为B的double值
+    public static final int SIZETYPE_KB = 2;//获取文件大小单位为KB的double值
+    public static final int SIZETYPE_MB = 3;//获取文件大小单位为MB的double值
+    public static final int SIZETYPE_GB = 4;//获取文件大小单位为GB的double值
+
+    /**
+     * 获取文件指定文件的指定单位的大小
+     *
+     * @param filePath 文件路径
+     * @param sizeType 获取大小的类型1为B、2为KB、3为MB、4为GB
+     * @return double值的大小
+     */
+    public static double getFileOrFilesSize(String filePath, int sizeType) {
+        File file = new File(filePath);
+        long blockSize = 0;
+        try {
+            if (file.isDirectory()) {
+                blockSize = getFileSizes(file);
+            } else {
+                blockSize = getFileSize(file);
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return FormetFileSize(blockSize, sizeType);
+    }
+
+    /**
+     * 调用此方法自动计算指定文件或指定文件夹的大小
+     *
+     * @return 计算好的带B、KB、MB、GB的字符串
+     */
+    public static String getAutoFileOrFilesSize(File file) {
+        long blockSize = 0;
+        try {
+            if (file.isDirectory()) {
+                blockSize = getFileSizes(file);
+            } else {
+                blockSize = file.length();
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return FormetFileSize(blockSize);
+    }
+
+    /**
+     * 获取指定文件大小
+     *
+     * @param file
+     * @return
+     * @throws Exception
+     */
+    private static long getFileSize(File file) throws Exception {
+        long size = 0;
+        if (file.exists()) {
+            FileInputStream fis = null;
+            fis = new FileInputStream(file);
+            size = fis.available();
+        } else {
+            file.createNewFile();
+        }
+        return size;
+    }
+
+    /**
+     * 获取指定文件夹
+     *
+     * @param f
+     * @return
+     * @throws Exception
+     */
+    private static long getFileSizes(File f) throws Exception {
+        long size = 0;
+        File flist[] = f.listFiles();
+        for (int i = 0; i < flist.length; i++) {
+            if (flist[i].isDirectory()) {
+                size = size + getFileSizes(flist[i]);
+            } else {
+                size = size + getFileSize(flist[i]);
+            }
+        }
+        return size;
+    }
+
+    /**
+     * 转换文件大小
+     *
+     * @param fileS
+     * @return
+     */
+    private static String FormetFileSize(long fileS) {
+        DecimalFormat df = new DecimalFormat("#.00");
+        String fileSizeString = "";
+        String wrongSize = "0B";
+        if (fileS == 0) {
+            return wrongSize;
+        }
+        if (fileS < 1024) {
+            fileSizeString = df.format((double) fileS) + "B";
+        } else if (fileS < 1048576) {
+            fileSizeString = df.format((double) fileS / 1024) + "KB";
+        } else if (fileS < 1073741824) {
+            fileSizeString = df.format((double) fileS / 1048576) + "MB";
+        } else {
+            fileSizeString = df.format((double) fileS / 1073741824) + "GB";
+        }
+        return fileSizeString;
+    }
+
+    /**
+     * 转换文件大小,指定转换的类型
+     *
+     * @param fileS
+     * @param sizeType
+     * @return
+     */
+    private static double FormetFileSize(long fileS, int sizeType) {
+        DecimalFormat df = new DecimalFormat("#.00");
+        double fileSizeLong = 0;
+        switch (sizeType) {
+            case SIZETYPE_B:
+                fileSizeLong = Double.valueOf(df.format((double) fileS));
+                break;
+            case SIZETYPE_KB:
+                fileSizeLong = Double.valueOf(df.format((double) fileS / 1024));
+                break;
+            case SIZETYPE_MB:
+                fileSizeLong = Double.valueOf(df.format((double) fileS / 1048576));
+                break;
+            case SIZETYPE_GB:
+                fileSizeLong = Double.valueOf(df.format((double) fileS / 1073741824));
+                break;
+            default:
+                break;
+        }
+        return fileSizeLong;
+    }
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/FileUtils.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/FileUtils.java
new file mode 100644
index 0000000..3a5a473
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/FileUtils.java
@@ -0,0 +1,946 @@
+package com.zlylib.fileselectorlib.utils;
+
+import android.content.Context;
+import android.os.Environment;
+import android.os.storage.StorageManager;
+import android.text.TextUtils;
+import android.webkit.MimeTypeMap;
+
+
+import androidx.annotation.IntDef;
+
+import com.zlylib.fileselectorlib.bean.BreadModel;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.Closeable;
+import java.io.File;
+import java.io.FileFilter;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.FileWriter;
+import java.io.FilenameFilter;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.UnsupportedEncodingException;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Calendar;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+import java.util.regex.Pattern;
+
+/**
+ * 文件处理
+ * <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+ * <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+ *
+ * @author zhangliyang
+ * @since 2014-4-18
+ */
+public final class FileUtils {
+    public static final int BY_NAME_ASC = 0;
+    public static final int BY_NAME_DESC = 1;
+    public static final int BY_TIME_ASC = 2;
+    public static final int BY_TIME_DESC = 3;
+    public static final int BY_SIZE_ASC = 4;
+    public static final int BY_SIZE_DESC = 5;
+    public static final int BY_EXTENSION_ASC = 6;
+    public static final int BY_EXTENSION_DESC = 7;
+
+    @IntDef(value = {
+            BY_NAME_ASC,//按名称
+            BY_NAME_DESC,
+            BY_TIME_ASC,//按最后修改时间
+            BY_TIME_DESC,
+            BY_SIZE_ASC,//按大小
+            BY_SIZE_DESC,
+            BY_EXTENSION_ASC,//按文件扩展名
+            BY_EXTENSION_DESC
+    })
+    @Retention(RetentionPolicy.SOURCE)
+    public @interface SortType {
+    }
+
+    /**
+     * 将目录分隔符统一为平台默认的分隔符，并为目录结尾添加分隔符
+     */
+    public static String separator(String path) {
+        String separator = File.separator;
+        path = path.replace("\\", separator);
+        if (!path.endsWith(separator)) {
+            path += separator;
+        }
+        return path;
+    }
+
+    /**
+     * 从路径名中获取面包屑导航列表
+     *
+     * @param mSdCardList mSdCardList
+     * @param path        路径名
+     * @return 面包屑导航列表
+     */
+    public static List<BreadModel> getBreadModeListFromPath(List<String> mSdCardList, String path) {
+        List<String> pathList = new ArrayList<>();
+        for (int i = 0; i < mSdCardList.size(); i++) {
+            LogUtils.debug("getBreadModeListFromPath","--"+mSdCardList.get(i));
+            if (i == 0) {
+                //内部存储设备
+                path = path.replace(mSdCardList.get(i), "/内部存储设备");
+            } else {
+                path = path.replace(mSdCardList.get(i), "/SD卡" + i);
+            }
+        }
+
+        if (!TextUtils.isEmpty(path)) {
+            String[] a = path.substring(1, path.length()).split("/");
+            pathList = Arrays.asList(a);
+        }
+        List<BreadModel> breadModelList = new ArrayList<>();
+        for (String str :  pathList) {
+            LogUtils.debug("getBreadModeListFromPath",str);
+            BreadModel breadModel = new BreadModel();
+            breadModel.setCurName(str);
+            breadModelList.add(breadModel);
+        }
+        return breadModelList;
+    }
+
+    /**
+     * 点击某个位置的面包屑导航，获取到面包屑导航列表
+     *
+     * @param mSdCardList    mSdCardList
+     * @param breadModelList 原列表
+     * @param position       点击位置
+     * @return 新列表
+     */
+    public static String getBreadModelListByPosition(List<String> mSdCardList, List<BreadModel> breadModelList, int position) {
+        StringBuilder result = new StringBuilder("/");
+        for (int i = 0; i < breadModelList.size(); i++) {
+            if (position >= i) {
+                result.append(breadModelList.get(i).getCurName()).append(File.separator);
+            } else {
+                break;
+            }
+        }
+        String resultStr = result.toString();
+        if (resultStr.startsWith("/内部存储设备")) {
+            resultStr = resultStr.replace("/内部存储设备", mSdCardList.get(0));
+        } else if (resultStr.startsWith("/SD卡")) {
+            resultStr = resultStr.replace("/SD卡" + String.valueOf(resultStr.charAt(4)), mSdCardList.get(Integer.valueOf(String.valueOf(resultStr.charAt(4)))));
+        }
+        return resultStr;
+    }
+
+    /**
+     * 切换SD卡路径
+     * @param sdCardName
+     * @param mSdCardList
+     * @return
+     */
+    public static String getChangeSdCard(String sdCardName, List<String> mSdCardList){
+        if(TextUtils.isEmpty(sdCardName)){
+            return Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator;
+        }
+        if(sdCardName.startsWith("内部存储设备")){
+            return mSdCardList.get(0) + File.separator;
+        }
+        if(sdCardName.startsWith("SD卡")){
+            return mSdCardList.get(Integer.valueOf(String.valueOf(sdCardName.charAt(3)))) + File.separator;
+        }
+        return Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator;
+    }
+
+    /**
+     * 判断是否可以返回上一级目录,true可以返回上级目录，false不可以返回，直接finish
+     */
+    public static boolean canBackParent(String curFolder, List<String> sdCardList) {
+        for (String sdcard :
+                sdCardList) {
+            if (curFolder.equals(sdcard + File.separator)) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+
+    public static void closeSilently(Closeable c) {
+        if (c == null) {
+            return;
+        }
+        try {
+            c.close();
+        } catch (IOException e) {
+            // do nothing
+        }
+    }
+
+    /**
+     * 列出指定目录下的所有子目录
+     */
+    public static File[] listDirs(String startDirPath, String[] excludeDirs, @SortType int sortType) {
+        ArrayList<File> dirList = new ArrayList<File>();
+        File startDir = new File(startDirPath);
+        if (!startDir.isDirectory()) {
+            return new File[0];
+        }
+        File[] dirs = startDir.listFiles(new FileFilter() {
+            public boolean accept(File f) {
+                if (f == null) {
+                    return false;
+                }
+                //noinspection RedundantIfStatement
+                if (f.isDirectory()) {
+                    return true;
+                }
+                return false;
+            }
+        });
+        if (dirs == null) {
+            return new File[0];
+        }
+        if (excludeDirs == null) {
+            excludeDirs = new String[0];
+        }
+        for (File dir : dirs) {
+            File file = dir.getAbsoluteFile();
+            if (!ConvertUtils.toString(excludeDirs).contains(file.getName())) {
+                dirList.add(file);
+            }
+        }
+        if (sortType == BY_NAME_ASC) {
+            Collections.sort(dirList, new SortByName());
+        } else if (sortType == BY_NAME_DESC) {
+            Collections.sort(dirList, new SortByName());
+            Collections.reverse(dirList);
+        } else if (sortType == BY_TIME_ASC) {
+            Collections.sort(dirList, new SortByTime());
+        } else if (sortType == BY_TIME_DESC) {
+            Collections.sort(dirList, new SortByTime());
+            Collections.reverse(dirList);
+        } else if (sortType == BY_SIZE_ASC) {
+            Collections.sort(dirList, new SortBySize());
+        } else if (sortType == BY_SIZE_DESC) {
+            Collections.sort(dirList, new SortBySize());
+            Collections.reverse(dirList);
+        } else if (sortType == BY_EXTENSION_ASC) {
+            Collections.sort(dirList, new SortByExtension());
+        } else if (sortType == BY_EXTENSION_DESC) {
+            Collections.sort(dirList, new SortByExtension());
+            Collections.reverse(dirList);
+        }
+        return dirList.toArray(new File[dirList.size()]);
+    }
+
+    /**
+     * 列出指定目录下的所有子目录
+     */
+    public static File[] listDirs(String startDirPath, String[] excludeDirs) {
+        return listDirs(startDirPath, excludeDirs, BY_NAME_ASC);
+    }
+
+    /**
+     * 列出指定目录下的所有子目录
+     */
+    public static File[] listDirs(String startDirPath) {
+        return listDirs(startDirPath, null, BY_NAME_ASC);
+    }
+
+    /**
+     * 列出指定目录下的所有子目录及所有文件
+     */
+    public static File[] listDirsAndFiles(String startDirPath, String[] allowExtensions) {
+        File[] dirs, files, dirsAndFiles;
+        dirs = listDirs(startDirPath);
+        if (allowExtensions == null) {
+            files = listFiles(startDirPath);
+        } else {
+            files = listFiles(startDirPath, allowExtensions);
+        }
+        if (dirs == null || files == null) {
+            return null;
+        }
+        dirsAndFiles = new File[dirs.length + files.length];
+        System.arraycopy(dirs, 0, dirsAndFiles, 0, dirs.length);
+        System.arraycopy(files, 0, dirsAndFiles, dirs.length, files.length);
+        return dirsAndFiles;
+    }
+
+    /**
+     * 列出指定目录下的所有子目录及所有文件
+     */
+    public static File[] listDirsAndFiles(String startDirPath) {
+        return listDirsAndFiles(startDirPath, null);
+    }
+
+    /**
+     * 列出指定目录下的所有文件
+     */
+    public static File[] listFiles(String startDirPath, final Pattern filterPattern, @SortType int sortType) {
+        LogUtils.verbose(String.format("list file %s", startDirPath));
+        ArrayList<File> fileList = new ArrayList<File>();
+        File f = new File(startDirPath);
+        if (!f.isDirectory()) {
+            return new File[0];
+        }
+        File[] files = f.listFiles(new FileFilter() {
+            public boolean accept(File f) {
+                if (f == null) {
+                    return false;
+                }
+                if (f.isDirectory()) {
+                    return false;
+                }
+                //noinspection SimplifiableIfStatement
+                if (filterPattern == null) {
+                    return true;
+                }
+                return filterPattern.matcher(f.getName()).find();
+            }
+        });
+        if (files == null) {
+            return new File[0];
+        }
+        for (File file : files) {
+            fileList.add(file.getAbsoluteFile());
+        }
+        if (sortType == BY_NAME_ASC) {
+            Collections.sort(fileList, new SortByName());
+        } else if (sortType == BY_NAME_DESC) {
+            Collections.sort(fileList, new SortByName());
+            Collections.reverse(fileList);
+        } else if (sortType == BY_TIME_ASC) {
+            Collections.sort(fileList, new SortByTime());
+        } else if (sortType == BY_TIME_DESC) {
+            Collections.sort(fileList, new SortByTime());
+            Collections.reverse(fileList);
+        } else if (sortType == BY_SIZE_ASC) {
+            Collections.sort(fileList, new SortBySize());
+        } else if (sortType == BY_SIZE_DESC) {
+            Collections.sort(fileList, new SortBySize());
+            Collections.reverse(fileList);
+        } else if (sortType == BY_EXTENSION_ASC) {
+            Collections.sort(fileList, new SortByExtension());
+        } else if (sortType == BY_EXTENSION_DESC) {
+            Collections.sort(fileList, new SortByExtension());
+            Collections.reverse(fileList);
+        }
+        return fileList.toArray(new File[fileList.size()]);
+    }
+
+    /**
+     * 列出指定目录下的所有文件
+     */
+    public static File[] listFiles(String startDirPath, Pattern filterPattern) {
+        return listFiles(startDirPath, filterPattern, BY_NAME_ASC);
+    }
+
+    /**
+     * 列出指定目录下的所有文件
+     */
+    public static File[] listFiles(String startDirPath) {
+        return listFiles(startDirPath, null, BY_NAME_ASC);
+    }
+
+    /**
+     * 列出指定目录下的所有文件
+     */
+    public static File[] listFiles(String startDirPath, final String[] allowExtensions) {
+        LogUtils.verbose(String.format("list file %s", startDirPath));
+        File file = new File(startDirPath);
+        return file.listFiles(new FilenameFilter() {
+
+            @Override
+            public boolean accept(File dir, String name) {
+                //返回当前目录所有以某些扩展名结尾的文件
+                String extension = FileUtils.getExtension(name);
+                return ConvertUtils.toString(allowExtensions).contains(extension);
+            }
+
+        });
+    }
+
+    /**
+     * 列出指定目录下的所有文件
+     */
+    public static File[] listFiles(String startDirPath, String allowExtension) {
+        return listFiles(startDirPath, new String[]{allowExtension});
+    }
+
+    /**
+     * 判断文件或目录是否存在
+     */
+    public static boolean exist(String path) {
+        File file = new File(path);
+        return file.exists();
+    }
+
+    /**
+     * 删除文件或目录
+     */
+    public static boolean delete(File file, boolean deleteRootDir) {
+        LogUtils.verbose(String.format("delete file %s", file.getAbsolutePath()));
+        boolean result = false;
+        if (file.isFile()) {
+            //是文件
+            result = deleteResolveEBUSY(file);
+        } else {
+            //是目录
+            File[] files = file.listFiles();
+            if (files == null) {
+                return false;
+            }
+            if (files.length == 0) {
+                result = deleteRootDir && deleteResolveEBUSY(file);
+            } else {
+                for (File f : files) {
+                    delete(f, deleteRootDir);
+                    result = deleteResolveEBUSY(f);
+                }
+            }
+            if (deleteRootDir) {
+                result = deleteResolveEBUSY(file);
+            }
+        }
+        return result;
+    }
+
+    /**
+     * bug: open failed: EBUSY (Device or resource busy)
+     * fix: http://stackoverflow.com/questions/11539657/open-failed-ebusy-device-or-resource-busy
+     */
+    private static boolean deleteResolveEBUSY(File file) {
+        // Before you delete a Directory or File: rename it!
+        final File to = new File(file.getAbsolutePath() + System.currentTimeMillis());
+        //noinspection ResultOfMethodCallIgnored
+        file.renameTo(to);
+        return to.delete();
+    }
+
+    /**
+     * 删除文件或目录
+     */
+    public static boolean delete(String path, boolean deleteRootDir) {
+        File file = new File(path);
+        //noinspection SimplifiableIfStatement
+        if (file.exists()) {
+            return delete(file, deleteRootDir);
+        }
+        return false;
+    }
+
+    /**
+     * 删除文件或目录, 不删除最顶层目录
+     */
+    public static boolean delete(String path) {
+        return delete(path, false);
+    }
+
+    /**
+     * 删除文件或目录, 不删除最顶层目录
+     */
+    public static boolean delete(File file) {
+        return delete(file, false);
+    }
+
+    /**
+     * 复制文件为另一个文件，或复制某目录下的所有文件及目录到另一个目录下
+     */
+    public static boolean copy(String src, String tar) {
+        File srcFile = new File(src);
+        return srcFile.exists() && copy(srcFile, new File(tar));
+    }
+
+    /**
+     * 复制文件或目录
+     */
+    public static boolean copy(File src, File tar) {
+        try {
+            LogUtils.verbose(String.format("copy %s to %s", src.getAbsolutePath(), tar.getAbsolutePath()));
+            if (src.isFile()) {
+                InputStream is = new FileInputStream(src);
+                OutputStream op = new FileOutputStream(tar);
+                BufferedInputStream bis = new BufferedInputStream(is);
+                BufferedOutputStream bos = new BufferedOutputStream(op);
+                byte[] bt = new byte[1024 * 8];
+                while (true) {
+                    int len = bis.read(bt);
+                    if (len == -1) {
+                        break;
+                    } else {
+                        bos.write(bt, 0, len);
+                    }
+                }
+                bis.close();
+                bos.close();
+            } else if (src.isDirectory()) {
+                File[] files = src.listFiles();
+                //noinspection ResultOfMethodCallIgnored
+                tar.mkdirs();
+                for (File file : files) {
+                    copy(file.getAbsoluteFile(), new File(tar.getAbsoluteFile(), file.getName()));
+                }
+            }
+            return true;
+        } catch (Exception e) {
+            LogUtils.error(e);
+            return false;
+        }
+    }
+
+    /**
+     * 移动文件或目录
+     */
+    public static boolean move(String src, String tar) {
+        return move(new File(src), new File(tar));
+    }
+
+    /**
+     * 移动文件或目录
+     */
+    public static boolean move(File src, File tar) {
+        return rename(src, tar);
+    }
+
+    /**
+     * 文件重命名
+     */
+    public static boolean rename(String oldPath, String newPath) {
+        return rename(new File(oldPath), new File(newPath));
+    }
+
+    /**
+     * 文件重命名
+     */
+    public static boolean rename(File src, File tar) {
+        LogUtils.verbose(String.format("rename %s to %s", src.getAbsolutePath(), tar.getAbsolutePath()));
+        return src.renameTo(tar);
+    }
+
+    /**
+     * 读取文本文件, 失败将返回空串
+     */
+    public static String readText(String filepath, String charset) {
+        LogUtils.verbose(String.format("read %s use %s", filepath, charset));
+        try {
+            byte[] data = readBytes(filepath);
+            if (data != null) {
+                return new String(data, charset).trim();
+            }
+        } catch (UnsupportedEncodingException e) {
+            LogUtils.warn(e);
+        }
+        return "";
+    }
+
+    /**
+     * 读取文本文件, 失败将返回空串
+     */
+    public static String readText(String filepath) {
+        return readText(filepath, "utf-8");
+    }
+
+    /**
+     * 读取文件内容, 失败将返回空串
+     */
+    public static byte[] readBytes(String filepath) {
+        LogUtils.verbose(String.format("read %s", filepath));
+        FileInputStream fis = null;
+        try {
+            fis = new FileInputStream(filepath);
+            ByteArrayOutputStream baos = new ByteArrayOutputStream();
+            byte[] buffer = new byte[1024];
+            while (true) {
+                int len = fis.read(buffer, 0, buffer.length);
+                if (len == -1) {
+                    break;
+                } else {
+                    baos.write(buffer, 0, len);
+                }
+            }
+            byte[] data = baos.toByteArray();
+            baos.close();
+            return data;
+        } catch (IOException e) {
+            LogUtils.warn(e);
+            return null;
+        } finally {
+            closeSilently(fis);
+        }
+    }
+
+    /**
+     * 保存文本内容
+     */
+    public static boolean writeText(String filepath, String content, String charset) {
+        try {
+            writeBytes(filepath, content.getBytes(charset));
+            return true;
+        } catch (UnsupportedEncodingException e) {
+            LogUtils.warn(e);
+            return false;
+        }
+    }
+
+    /**
+     * 保存文本内容
+     */
+    public static boolean writeText(String filepath, String content) {
+        return writeText(filepath, content, "utf-8");
+    }
+
+    /**
+     * 保存文件内容
+     */
+    public static boolean writeBytes(String filepath, byte[] data) {
+        LogUtils.verbose(String.format("write %s", filepath));
+        File file = new File(filepath);
+        FileOutputStream fos = null;
+        try {
+            if (!file.exists()) {
+                //noinspection ResultOfMethodCallIgnored
+                file.getParentFile().mkdirs();
+                //noinspection ResultOfMethodCallIgnored
+                file.createNewFile();
+            }
+            fos = new FileOutputStream(filepath);
+            fos.write(data);
+            return true;
+        } catch (IOException e) {
+            LogUtils.warn(e);
+            return false;
+        } finally {
+            closeSilently(fos);
+        }
+    }
+
+    /**
+     * 追加文本内容
+     */
+    public static boolean appendText(String path, String content) {
+        LogUtils.verbose(String.format("append %s", path));
+        File file = new File(path);
+        FileWriter writer = null;
+        try {
+            if (!file.exists()) {
+                //noinspection ResultOfMethodCallIgnored
+                file.createNewFile();
+            }
+            writer = new FileWriter(file, true);
+            writer.write(content);
+            return true;
+        } catch (IOException e) {
+            LogUtils.warn(e);
+            return false;
+        } finally {
+            closeSilently(writer);
+        }
+    }
+
+    /**
+     * 获取文件大小
+     */
+    public static long getLength(String path) {
+        File file = new File(path);
+        if (!file.isFile() || !file.exists()) {
+            return 0;
+        }
+        return file.length();
+    }
+
+    /**
+     * 获取文件或网址的名称（包括后缀）
+     */
+    public static String getName(String pathOrUrl) {
+        if (pathOrUrl == null) {
+            return "";
+        }
+        int pos = pathOrUrl.lastIndexOf('/');
+        if (0 <= pos) {
+            return pathOrUrl.substring(pos + 1);
+        } else {
+            return String.valueOf(System.currentTimeMillis()) + "." + getExtension(pathOrUrl);
+        }
+    }
+
+    /**
+     * 获取文件名（不包括扩展名）
+     */
+    public static String getNameExcludeExtension(String path) {
+        try {
+            String fileName = (new File(path)).getName();
+            int lastIndexOf = fileName.lastIndexOf(".");
+            if (lastIndexOf != -1) {
+                fileName = fileName.substring(0, lastIndexOf);
+            }
+            return fileName;
+        } catch (Exception e) {
+            LogUtils.warn(e);
+            return "";
+        }
+    }
+
+    /**
+     * 获取格式化后的文件大小
+     */
+    public static String getSize(String path) {
+        long fileSize = getLength(path);
+        return ConvertUtils.toFileSizeString(fileSize);
+    }
+
+    /**
+     * 获取文件后缀,不包括“.”
+     */
+    public static String getExtension(String pathOrUrl) {
+        int dotPos = pathOrUrl.lastIndexOf('.');
+        if (0 <= dotPos) {
+            return pathOrUrl.substring(dotPos + 1);
+        } else {
+            return "ext";
+        }
+    }
+
+    /**
+     * 获取文件的MIME类型
+     */
+    public static String getMimeType(String pathOrUrl) {
+        String ext = getExtension(pathOrUrl);
+        MimeTypeMap map = MimeTypeMap.getSingleton();
+        String mimeType;
+        if (map.hasExtension(ext)) {
+            mimeType = map.getMimeTypeFromExtension(ext);
+        } else {
+            mimeType = "*/*";
+        }
+        return mimeType;
+    }
+
+    /**
+     * 获取格式化后的文件/目录创建或最后修改时间
+     */
+    public static String getDateTime(String path) {
+        return getDateTime(path, "yyyy-MM-dd HH:mm");
+    }
+
+    /**
+     * 获取格式化后的文件/目录创建或最后修改时间
+     */
+    public static String getDateTime(String path, String format) {
+        File file = new File(path);
+        return getDateTime(file, format);
+    }
+
+    /**
+     * 获取格式化后的文件/目录创建或最后修改时间
+     */
+    public static String getDateTime(File file, String format) {
+        Calendar cal = Calendar.getInstance();
+        cal.setTimeInMillis(file.lastModified());
+        return DateUtils.formatDate(cal.getTime(), format);
+    }
+
+    /**
+     * 比较两个文件的最后修改时间
+     */
+    public static int compareLastModified(String path1, String path2) {
+        long stamp1 = (new File(path1)).lastModified();
+        long stamp2 = (new File(path2)).lastModified();
+        if (stamp1 > stamp2) {
+            return 1;
+        } else if (stamp1 < stamp2) {
+            return -1;
+        } else {
+            return 0;
+        }
+    }
+
+    /**
+     * 创建多级别的目录
+     */
+    public static boolean makeDirs(String path) {
+        return makeDirs(new File(path));
+    }
+
+    /**
+     * 创建多级别的目录
+     */
+    public static boolean makeDirs(File file) {
+        return file.mkdirs();
+    }
+
+    public static class SortByExtension implements Comparator<File> {
+
+        public SortByExtension() {
+            super();
+        }
+
+        public int compare(File f1, File f2) {
+            if (f1 == null || f2 == null) {
+                if (f1 == null) {
+                    return -1;
+                } else {
+                    return 1;
+                }
+            } else {
+                if (f1.isDirectory() && f2.isFile()) {
+                    return -1;
+                } else if (f1.isFile() && f2.isDirectory()) {
+                    return 1;
+                } else {
+                    return f1.getName().compareToIgnoreCase(f2.getName());
+                }
+            }
+        }
+
+    }
+
+    public static class SortByName implements Comparator<File> {
+        private boolean caseSensitive;
+
+        public SortByName(boolean caseSensitive) {
+            this.caseSensitive = caseSensitive;
+        }
+
+        public SortByName() {
+            this.caseSensitive = false;
+        }
+
+        public int compare(File f1, File f2) {
+            if (f1 == null || f2 == null) {
+                if (f1 == null) {
+                    return -1;
+                } else {
+                    return 1;
+                }
+            } else {
+                if (f1.isDirectory() && f2.isFile()) {
+                    return -1;
+                } else if (f1.isFile() && f2.isDirectory()) {
+                    return 1;
+                } else {
+                    String s1 = f1.getName();
+                    String s2 = f2.getName();
+                    if (caseSensitive) {
+                        return s1.compareTo(s2);
+                    } else {
+                        return s1.compareToIgnoreCase(s2);
+                    }
+                }
+            }
+        }
+
+    }
+
+    public static class SortBySize implements Comparator<File> {
+
+        public SortBySize() {
+            super();
+        }
+
+        public int compare(File f1, File f2) {
+            if (f1 == null || f2 == null) {
+                if (f1 == null) {
+                    return -1;
+                } else {
+                    return 1;
+                }
+            } else {
+                if (f1.isDirectory() && f2.isFile()) {
+                    return -1;
+                } else if (f1.isFile() && f2.isDirectory()) {
+                    return 1;
+                } else {
+                    if (f1.length() < f2.length()) {
+                        return -1;
+                    } else {
+                        return 1;
+                    }
+                }
+            }
+        }
+
+    }
+
+    public static class SortByTime implements Comparator<File> {
+
+        public SortByTime() {
+            super();
+        }
+
+        public int compare(File f1, File f2) {
+            if (f1 == null || f2 == null) {
+                if (f1 == null) {
+                    return -1;
+                } else {
+                    return 1;
+                }
+            } else {
+                if (f1.isDirectory() && f2.isFile()) {
+                    return -1;
+                } else if (f1.isFile() && f2.isDirectory()) {
+                    return 1;
+                } else {
+                    if (f1.lastModified() > f2.lastModified()) {
+                        return -1;
+                    } else {
+                        return 1;
+                    }
+                }
+            }
+        }
+
+    }
+
+    /**
+     * 得到所有的存储路径（内部存储+外部存储）
+     *
+     * @param context context
+     * @return 路径列表
+     */
+    public static List<String> getAllSdPaths(Context context) {
+        Method mMethodGetPaths = null;
+        String[] paths = null;
+        //通过调用类的实例mStorageManager的getClass()获取StorageManager类对应的Class对象
+        //getMethod("getVolumePaths")返回StorageManager类对应的Class对象的getVolumePaths方法，这里不带参数
+        StorageManager mStorageManager = (StorageManager) context
+                .getSystemService(context.STORAGE_SERVICE);//storage
+        try {
+            mMethodGetPaths = mStorageManager.getClass().getMethod("getVolumePaths");
+            paths = (String[]) mMethodGetPaths.invoke(mStorageManager);
+        } catch (Exception e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+        }
+        if (paths != null) {
+            return Arrays.asList(paths);
+        }
+        return new ArrayList<String>();
+    }
+
+    /**
+     * 获取用于显示的Sd卡列表
+     * @param sdCardList sdCardList
+     * @return List
+     */
+    public static List<String> getAllSdCardList(List<String> sdCardList) {
+        List<String> resultList = new ArrayList<>();
+        for (int i = 0; i < sdCardList.size(); i++) {
+            if (i == 0) {
+                //内部存储设备
+                resultList.add("内部存储设备");
+            } else {
+                resultList.add("SD卡"+i);
+            }
+        }
+        return resultList;
+    }
+
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/LogUtils.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/LogUtils.java
new file mode 100644
index 0000000..1f8cfe3
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/LogUtils.java
@@ -0,0 +1,323 @@
+package com.zlylib.fileselectorlib.utils;
+
+import android.os.Debug;
+import android.os.Environment;
+import android.util.Log;
+
+import com.zlylib.fileselectorlib.BuildConfig;
+
+import java.io.File;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+
+
+/**
+ * 将信息记录到控制台的LogCat，显示调用方法及所在的文件、行号，方便开发时调试查错。
+ * 注意：在Debug状态下开启，在Release状态下关闭，敏感信息不宜打印，否则被非法之徒抓取贻害无穷。
+ *
+ * @author zhangliyang[QQ:1023694760]
+ * @since 2013/11/2
+ */
+public final class LogUtils {
+    private static final int MIN_STACK_OFFSET = 3;// starts at this class after two native calls
+    private static final int MAX_STACK_TRACE_SIZE = 131071; //128 KB - 1
+    private static final int METHOD_COUNT = 2; // show method count in trace
+    private static boolean isDebug = BuildConfig.DEBUG;// 是否调试模式
+    private static String debugTag = "FilePicker";// LogCat的标记
+
+    public static void setIsDebug(boolean isDebug) {
+        LogUtils.isDebug = isDebug;
+    }
+
+    public static boolean isDebug() {
+        return isDebug;
+    }
+
+    public static void setDebugTag(String debugTag) {
+        LogUtils.debugTag = debugTag;
+    }
+
+    public static String getDebugTag() {
+        return debugTag;
+    }
+
+    /**
+     * Verbose.
+     *
+     * @param message the message
+     */
+    public static void verbose(String message) {
+        verbose("", message);
+    }
+
+    /**
+     * Verbose.
+     *
+     * @param object  the object
+     * @param message the message
+     */
+    public static void verbose(Object object, String message) {
+        verbose(object.getClass().getSimpleName(), message);
+    }
+
+    /**
+     * 记录“verbose”级别的信息
+     *
+     * @param tag the tag
+     * @param msg the msg
+     */
+    public static void verbose(String tag, String msg) {
+        if (isDebug) {
+            tag = debugTag + ((tag == null || tag.trim().length() == 0) ? "" : "-") + tag;
+            msg = msg + getTraceElement();
+            Log.v(tag, msg);
+        }
+    }
+
+    /**
+     * Debug.
+     *
+     * @param message the message
+     */
+    public static void debug(String message) {
+        debug("", message);
+    }
+
+    /**
+     * Debug.
+     *
+     * @param object  the object
+     * @param message the message
+     */
+    public static void debug(Object object, String message) {
+        debug(object.getClass().getSimpleName(), message);
+    }
+
+    /**
+     * 记录“debug”级别的信息
+     *
+     * @param tag the tag
+     * @param msg the msg
+     */
+    public static void debug(String tag, String msg) {
+        if (isDebug) {
+            tag = debugTag + ((tag == null || tag.trim().length() == 0) ? "" : "-") + tag;
+            msg = msg + getTraceElement();
+            Log.d(tag, msg);
+        }
+    }
+
+    /**
+     * Warn.
+     *
+     * @param e the e
+     */
+    public static void warn(Throwable e) {
+        warn(toStackTraceString(e));
+    }
+
+    /**
+     * Warn.
+     *
+     * @param message the message
+     */
+    public static void warn(String message) {
+        warn("", message);
+    }
+
+    /**
+     * Warn.
+     *
+     * @param object  the object
+     * @param message the message
+     */
+    public static void warn(Object object, String message) {
+        warn(object.getClass().getSimpleName(), message);
+    }
+
+    /**
+     * Warn.
+     *
+     * @param object the object
+     * @param e      the e
+     */
+    public static void warn(Object object, Throwable e) {
+        warn(object.getClass().getSimpleName(), toStackTraceString(e));
+    }
+
+    /**
+     * 记录“warn”级别的信息
+     *
+     * @param tag the tag
+     * @param msg the msg
+     */
+    public static void warn(String tag, String msg) {
+        if (isDebug) {
+            tag = debugTag + ((tag == null || tag.trim().length() == 0) ? "" : "-") + tag;
+            msg = msg + getTraceElement();
+            Log.w(tag, msg);
+        }
+    }
+
+    /**
+     * Error.
+     *
+     * @param e the e
+     */
+    public static void error(Throwable e) {
+        error(toStackTraceString(e));
+    }
+
+    /**
+     * Error.
+     *
+     * @param message the message
+     */
+    public static void error(String message) {
+        error("", message);
+    }
+
+    /**
+     * Error.
+     *
+     * @param object  the object
+     * @param message the message
+     */
+    public static void error(Object object, String message) {
+        error(object.getClass().getSimpleName(), message);
+    }
+
+    /**
+     * Error.
+     *
+     * @param object the object
+     * @param e      the e
+     */
+    public static void error(Object object, Throwable e) {
+        error(object.getClass().getSimpleName(), toStackTraceString(e));
+    }
+
+    /**
+     * 记录“error”级别的信息
+     *
+     * @param tag the tag
+     * @param msg the msg
+     */
+    public static void error(String tag, String msg) {
+        if (isDebug) {
+            tag = debugTag + ((tag == null || tag.trim().length() == 0) ? "" : "-") + tag;
+            msg = msg + getTraceElement();
+            Log.e(tag, msg);
+        }
+    }
+
+    /**
+     * 在某个方法中调用生成.trace文件。然后拿到电脑上用DDMS工具打开分析
+     *
+     * @see #stopMethodTracing()
+     */
+    public static void startMethodTracing() {
+        if (isDebug) {
+            Debug.startMethodTracing(Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator + debugTag + ".trace");
+        }
+    }
+
+    /**
+     * Stop method tracing.
+     */
+    public static void stopMethodTracing() {
+        if (isDebug) {
+            Debug.stopMethodTracing();
+        }
+    }
+
+    /**
+     * To stack trace string string.
+     * <p>
+     * 此方法参见：https://github.com/Ereza/CustomActivityOnCrash
+     *
+     * @param throwable the throwable
+     * @return the string
+     */
+    public static String toStackTraceString(Throwable throwable) {
+        StringWriter sw = new StringWriter();
+        PrintWriter pw = new PrintWriter(sw);
+        throwable.printStackTrace(pw);
+        String stackTraceString = sw.toString();
+        //Reduce data to 128KB so we don't get a TransactionTooLargeException when sending the intent.
+        //The limit is 1MB on Android but some devices seem to have it lower.
+        //See: http://developer.android.com/reference/android/os/TransactionTooLargeException.html
+        //And: http://stackoverflow.com/questions/11451393/what-to-do-on-transactiontoolargeexception#comment46697371_12809171
+        if (stackTraceString.length() > MAX_STACK_TRACE_SIZE) {
+            String disclaimer = " [stack trace too large]";
+            stackTraceString = stackTraceString.substring(0, MAX_STACK_TRACE_SIZE - disclaimer.length()) + disclaimer;
+        }
+        pw.close();
+        return stackTraceString;
+    }
+
+    /**
+     * 可显示调用方法所在的文件行号，在AndroidStudio的logcat处可点击定位。
+     * 此方法参考：https://github.com/orhanobut/logger
+     */
+    private static String getTraceElement() {
+        try {
+            int methodCount = METHOD_COUNT;
+            StackTraceElement[] trace = Thread.currentThread().getStackTrace();
+            int stackOffset = _getStackOffset(trace);
+
+            //corresponding method count with the current stack may exceeds the stack trace. Trims the count
+            if (methodCount + stackOffset > trace.length) {
+                methodCount = trace.length - stackOffset - 1;
+            }
+
+            String level = "    ";
+            StringBuilder builder = new StringBuilder();
+            for (int i = methodCount; i > 0; i--) {
+                int stackIndex = i + stackOffset;
+                if (stackIndex >= trace.length) {
+                    continue;
+                }
+                builder.append("\n")
+                        .append(level)
+                        .append(_getSimpleClassName(trace[stackIndex].getClassName()))
+                        .append(".")
+                        .append(trace[stackIndex].getMethodName())
+                        .append(" ")
+                        .append("(")
+                        .append(trace[stackIndex].getFileName())
+                        .append(":")
+                        .append(trace[stackIndex].getLineNumber())
+                        .append(")");
+                level += "    ";
+            }
+            return builder.toString();
+        } catch (Exception e) {
+            Log.w(debugTag, e);
+            return "";
+        }
+    }
+
+    /**
+     * Determines the starting index of the stack trace, after method calls made by this class.
+     *
+     * @param trace the stack trace
+     * @return the stack offset
+     */
+    private static int _getStackOffset(StackTraceElement[] trace) {
+        for (int i = MIN_STACK_OFFSET; i < trace.length; i++) {
+            StackTraceElement e = trace[i];
+            String name = e.getClassName();
+            if (!name.equals(LogUtils.class.getName())) {
+                return --i;
+            }
+        }
+        return -1;
+    }
+
+    private static String _getSimpleClassName(String name) {
+        int lastIndex = name.lastIndexOf(".");
+        return name.substring(lastIndex + 1);
+    }
+
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/MimeType.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/MimeType.java
new file mode 100644
index 0000000..acaa16a
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/MimeType.java
@@ -0,0 +1,152 @@
+/*
+ * Copyright (C) 2014 nohana, Inc.
+ * Copyright 2017 Zhihu Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an &quot;AS IS&quot; BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.zlylib.fileselectorlib.utils;
+
+import android.content.ContentResolver;
+import android.net.Uri;
+import android.text.TextUtils;
+import android.webkit.MimeTypeMap;
+
+import androidx.collection.ArraySet;
+
+import java.util.Arrays;
+import java.util.EnumSet;
+import java.util.Locale;
+import java.util.Set;
+
+/**
+ * MIME Type enumeration to restrict selectable media on the selection activity. Matisse only supports images and
+ * videos.
+ * <p>
+ * Good example of mime types Android supports:
+ * https://android.googlesource.com/platform/frameworks/base/+/refs/heads/master/media/java/android/media/MediaFile.java
+ */
+@SuppressWarnings("unused")
+public enum MimeType {
+
+    // ============== images ==============
+    JPEG("image/jpeg", arraySetOf(
+            "jpg",
+            "jpeg"
+    )),
+    PNG("image/png", arraySetOf(
+            "png"
+    )),
+    GIF("image/gif", arraySetOf(
+            "gif"
+    )),
+    BMP("image/x-ms-bmp", arraySetOf(
+            "bmp"
+    )),
+    WEBP("image/webp", arraySetOf(
+            "webp"
+    )),
+
+    // ============== videos ==============
+    MPEG("video/mpeg", arraySetOf(
+            "mpeg",
+            "mpg"
+    )),
+    MP4("video/mp4", arraySetOf(
+            "mp4",
+            "m4v"
+    )),
+    QUICKTIME("video/quicktime", arraySetOf(
+            "mov"
+    )),
+    THREEGPP("video/3gpp", arraySetOf(
+            "3gp",
+            "3gpp"
+    )),
+    THREEGPP2("video/3gpp2", arraySetOf(
+            "3g2",
+            "3gpp2"
+    )),
+    MKV("video/x-matroska", arraySetOf(
+            "mkv"
+    )),
+    WEBM("video/webm", arraySetOf(
+            "webm"
+    )),
+    TS("video/mp2ts", arraySetOf(
+            "ts"
+    )),
+    AVI("video/avi", arraySetOf(
+            "avi"
+    ));
+
+    private final String mMimeTypeName;
+    private final Set<String> mExtensions;
+
+    MimeType(String mimeTypeName, Set<String> extensions) {
+        mMimeTypeName = mimeTypeName;
+        mExtensions = extensions;
+    }
+
+    public static Set<MimeType> ofAll() {
+        return EnumSet.allOf(MimeType.class);
+    }
+
+    public static Set<MimeType> of(MimeType type, MimeType... rest) {
+        return EnumSet.of(type, rest);
+    }
+
+    public static Set<MimeType> ofImage() {
+        return EnumSet.of(JPEG, PNG, GIF, BMP, WEBP);
+    }
+
+    public static Set<MimeType> ofVideo() {
+        return EnumSet.of(MPEG, MP4, QUICKTIME, THREEGPP, THREEGPP2, MKV, WEBM, TS, AVI);
+    }
+
+    private static Set<String> arraySetOf(String... suffixes) {
+        return new ArraySet<>(Arrays.asList(suffixes));
+    }
+
+    @Override
+    public String toString() {
+        return mMimeTypeName;
+    }
+
+    public boolean checkType(ContentResolver resolver, Uri uri) {
+        MimeTypeMap map = MimeTypeMap.getSingleton();
+        if (uri == null) {
+            return false;
+        }
+        String type = map.getExtensionFromMimeType(resolver.getType(uri));
+        String path = null;
+        // lazy load the path and prevent resolve for multiple times
+        boolean pathParsed = false;
+        for (String extension : mExtensions) {
+            if (extension.equals(type)) {
+                return true;
+            }
+            if (!pathParsed) {
+                // we only resolve the path for one time
+                path = PhotoMetadataUtils.getPath(resolver, uri);
+                if (!TextUtils.isEmpty(path)) {
+                    path = path.toLowerCase(Locale.US);
+                }
+                pathParsed = true;
+            }
+            if (path != null && path.endsWith(extension)) {
+                return true;
+            }
+        }
+        return false;
+    }
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/PathUtils.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/PathUtils.java
new file mode 100644
index 0000000..81f7a70
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/PathUtils.java
@@ -0,0 +1,135 @@
+package com.zlylib.fileselectorlib.utils;
+
+import android.annotation.TargetApi;
+import android.content.ContentUris;
+import android.content.Context;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Build;
+import android.os.Environment;
+import android.provider.DocumentsContract;
+import android.provider.MediaStore;
+
+/**
+ * http://stackoverflow.com/a/27271131/4739220
+ */
+
+public class PathUtils {
+    /**
+     * Get a file path from a Uri. This will get the the path for Storage Access
+     * Framework Documents, as well as the _data field for the MediaStore and
+     * other file-based ContentProviders.
+     *
+     * @param context The context.
+     * @param uri     The Uri to query.
+     * @author paulburke
+     */
+    @TargetApi(Build.VERSION_CODES.KITKAT)
+    public static String getPath(final Context context, final Uri uri) {
+        // DocumentProvider
+        if (Platform.hasKitKat() && DocumentsContract.isDocumentUri(context, uri)) {
+            // ExternalStorageProvider
+            if (isExternalStorageDocument(uri)) {
+                final String docId = DocumentsContract.getDocumentId(uri);
+                final String[] split = docId.split(":");
+                final String type = split[0];
+
+                if ("primary".equalsIgnoreCase(type)) {
+                    return Environment.getExternalStorageDirectory() + "/" + split[1];
+                }
+
+                // TODO handle non-primary volumes
+            } else if (isDownloadsDocument(uri)) { // DownloadsProvider
+
+                final String id = DocumentsContract.getDocumentId(uri);
+                final Uri contentUri = ContentUris.withAppendedId(
+                        Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
+
+                return getDataColumn(context, contentUri, null, null);
+            } else if (isMediaDocument(uri)) { // MediaProvider
+                final String docId = DocumentsContract.getDocumentId(uri);
+                final String[] split = docId.split(":");
+                final String type = split[0];
+
+                Uri contentUri = null;
+                if ("image".equals(type)) {
+                    contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
+                } else if ("video".equals(type)) {
+                    contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
+                } else if ("audio".equals(type)) {
+                    contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
+                }
+
+                final String selection = "_id=?";
+                final String[] selectionArgs = new String[]{
+                        split[1]
+                };
+
+                return getDataColumn(context, contentUri, selection, selectionArgs);
+            }
+        } else if ("content".equalsIgnoreCase(uri.getScheme())) { // MediaStore (and general)
+            return getDataColumn(context, uri, null, null);
+        } else if ("file".equalsIgnoreCase(uri.getScheme())) { // File
+            return uri.getPath();
+        }
+
+        return null;
+    }
+
+    /**
+     * Get the value of the data column for this Uri. This is useful for
+     * MediaStore Uris, and other file-based ContentProviders.
+     *
+     * @param context       The context.
+     * @param uri           The Uri to query.
+     * @param selection     (Optional) Filter used in the query.
+     * @param selectionArgs (Optional) Selection arguments used in the query.
+     * @return The value of the _data column, which is typically a file path.
+     */
+    public static String getDataColumn(Context context, Uri uri, String selection,
+                                       String[] selectionArgs) {
+
+        Cursor cursor = null;
+        final String column = "_data";
+        final String[] projection = {
+                column
+        };
+
+        try {
+            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
+            if (cursor != null && cursor.moveToFirst()) {
+                final int columnIndex = cursor.getColumnIndexOrThrow(column);
+                return cursor.getString(columnIndex);
+            }
+        } finally {
+            if (cursor != null)
+                cursor.close();
+        }
+        return null;
+    }
+
+
+    /**
+     * @param uri The Uri to check.
+     * @return Whether the Uri authority is ExternalStorageProvider.
+     */
+    public static boolean isExternalStorageDocument(Uri uri) {
+        return "com.android.externalstorage.documents".equals(uri.getAuthority());
+    }
+
+    /**
+     * @param uri The Uri to check.
+     * @return Whether the Uri authority is DownloadsProvider.
+     */
+    public static boolean isDownloadsDocument(Uri uri) {
+        return "com.android.providers.downloads.documents".equals(uri.getAuthority());
+    }
+
+    /**
+     * @param uri The Uri to check.
+     * @return Whether the Uri authority is MediaProvider.
+     */
+    public static boolean isMediaDocument(Uri uri) {
+        return "com.android.providers.media.documents".equals(uri.getAuthority());
+    }
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/PhotoMetadataUtils.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/PhotoMetadataUtils.java
new file mode 100644
index 0000000..72f3870
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/PhotoMetadataUtils.java
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2014 nohana, Inc.
+ * Copyright 2017 Zhihu Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an &quot;AS IS&quot; BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.zlylib.fileselectorlib.utils;
+
+import android.content.ContentResolver;
+import android.database.Cursor;
+import android.graphics.BitmapFactory;
+import android.graphics.Point;
+import android.net.Uri;
+import android.provider.MediaStore;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.text.DecimalFormat;
+
+public final class PhotoMetadataUtils {
+    private static final String TAG = PhotoMetadataUtils.class.getSimpleName();
+    private static final int MAX_WIDTH = 1600;
+    private static final String SCHEME_CONTENT = "content";
+
+    private PhotoMetadataUtils() {
+        throw new AssertionError("oops! the utility class is about to be instantiated...");
+    }
+
+    public static int getPixelsCount(ContentResolver resolver, Uri uri) {
+        Point size = getBitmapBound(resolver, uri);
+        return size.x * size.y;
+    }
+
+    public static Point getBitmapBound(ContentResolver resolver, Uri uri) {
+        InputStream is = null;
+        try {
+            BitmapFactory.Options options = new BitmapFactory.Options();
+            options.inJustDecodeBounds = true;
+            is = resolver.openInputStream(uri);
+            BitmapFactory.decodeStream(is, null, options);
+            int width = options.outWidth;
+            int height = options.outHeight;
+            return new Point(width, height);
+        } catch (FileNotFoundException e) {
+            return new Point(0, 0);
+        } finally {
+            if (is != null) {
+                try {
+                    is.close();
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+    }
+
+    public static String getPath(ContentResolver resolver, Uri uri) {
+        if (uri == null) {
+            return null;
+        }
+
+        if (SCHEME_CONTENT.equals(uri.getScheme())) {
+            Cursor cursor = null;
+            try {
+                cursor = resolver.query(uri, new String[]{MediaStore.Images.ImageColumns.DATA},
+                        null, null, null);
+                if (cursor == null || !cursor.moveToFirst()) {
+                    return null;
+                }
+                return cursor.getString(cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA));
+            } finally {
+                if (cursor != null) {
+                    cursor.close();
+                }
+            }
+        }
+        return uri.getPath();
+    }
+
+    public static float getSizeInMB(long sizeInBytes) {
+        return Float.valueOf(new DecimalFormat("0.0").format((float) sizeInBytes / 1024 / 1024));
+    }
+}
diff --git a/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/Platform.java b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/Platform.java
new file mode 100644
index 0000000..2a2e487
--- /dev/null
+++ b/fileselectorlib/src/main/java/com/zlylib/fileselectorlib/utils/Platform.java
@@ -0,0 +1,16 @@
+package com.zlylib.fileselectorlib.utils;
+
+import android.os.Build;
+
+/**
+ * @author JoongWon Baik
+ */
+public class Platform {
+    public static boolean hasICS() {
+        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH;
+    }
+
+    public static boolean hasKitKat() {
+        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
+    }
+}
diff --git a/fileselectorlib/src/main/res/drawable/bg_bottom_line_gray.xml b/fileselectorlib/src/main/res/drawable/bg_bottom_line_gray.xml
new file mode 100644
index 0000000..fb2ca06
--- /dev/null
+++ b/fileselectorlib/src/main/res/drawable/bg_bottom_line_gray.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <shape>
+            <solid android:color="#D3DFDE"/>
+        </shape>
+    </item>
+    <item
+        android:bottom="1px">
+        <shape>
+            <solid android:color="#FFFFFF"/>
+        </shape>
+    </item>
+</layer-list>
\ No newline at end of file
diff --git a/fileselectorlib/src/main/res/drawable/ic_back.png b/fileselectorlib/src/main/res/drawable/ic_back.png
new file mode 100644
index 0000000..3dded68
Binary files /dev/null and b/fileselectorlib/src/main/res/drawable/ic_back.png differ
diff --git a/fileselectorlib/src/main/res/layout/activity_select_file.xml b/fileselectorlib/src/main/res/layout/activity_select_file.xml
new file mode 100644
index 0000000..09f5fac
--- /dev/null
+++ b/fileselectorlib/src/main/res/layout/activity_select_file.xml
@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/coordinator_layout"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <com.zlylib.titlebarlib.ActionBarCommon
+        android:id="@+id/abc"
+        style="@style/ActionBar.Common"
+        app:ab_immersion="immersed"
+        app:ab_statusBarVisible="auto"
+        app:abc_leftIconRes="@drawable/ic_back"
+        app:abc_rightTextPaddingLeft="0dp"
+        app:abc_rightTextPaddingRight="15dp"
+        app:abc_rightText="选择"
+        app:abc_titleText="文件选择" />
+
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="33dp"
+        android:background="@color/Grey200"
+        android:orientation="horizontal">
+
+        <ImageView
+            android:id="@+id/imb_select_sdcard"
+            android:layout_width="36dp"
+            android:layout_height="36dp"
+            android:layout_gravity="center_vertical"
+            android:background="?android:attr/selectableItemBackground"
+            android:rotation="90"
+            android:scaleType="centerInside"
+            android:src="@mipmap/ic_chevron_right_white_24dp"
+
+            android:visibility="gone" />
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/breadcrumbs_view"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:paddingRight="10dp" />
+    </LinearLayout>
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/rcv_file_list"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:scrollbars="vertical"
+        app:layout_behavior="@string/appbar_scrolling_view_behavior" />
+
+</LinearLayout>
diff --git a/fileselectorlib/src/main/res/layout/bread_item.xml b/fileselectorlib/src/main/res/layout/bread_item.xml
new file mode 100644
index 0000000..17f8a48
--- /dev/null
+++ b/fileselectorlib/src/main/res/layout/bread_item.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="wrap_content"
+    android:layout_height="36dp"
+    android:orientation="horizontal"
+    android:gravity="center_vertical"
+    android:background="@android:color/transparent"
+    android:paddingLeft="10dp"
+    >
+
+    <Button
+        android:id="@+id/btn_bread"
+        android:minWidth="36dp"
+        android:layout_width="wrap_content"
+        android:layout_height="match_parent"
+        android:background="?android:attr/selectableItemBackground"
+        android:elevation="0dp"
+        android:gravity="center_vertical"
+        android:textAppearance="?android:attr/textAppearanceSmall"
+        android:textColor="@color/Grey700" />
+
+    <ImageButton
+        android:id="@+id/imb_bread"
+        android:layout_width="36dp"
+        android:layout_height="36dp"
+        android:src="@mipmap/ic_chevron_right_white_24dp"
+        android:tint="@color/Grey500"
+        android:background="?android:attr/selectableItemBackground"
+        />
+
+</LinearLayout>
\ No newline at end of file
diff --git a/fileselectorlib/src/main/res/layout/empty_file_list.xml b/fileselectorlib/src/main/res/layout/empty_file_list.xml
new file mode 100644
index 0000000..5574e69
--- /dev/null
+++ b/fileselectorlib/src/main/res/layout/empty_file_list.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/white">
+
+
+    <TextView
+        android:id="@+id/tv_empty"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+
+        android:gravity="center"
+        android:padding="12dp"
+        android:text="无数据"
+        android:layout_below="@id/iv_empty"
+        android:textColor="@color/Grey500"
+        android:textSize="18sp"/>
+
+    <ImageView
+        android:layout_centerHorizontal="true"
+        android:id="@+id/iv_empty"
+        android:layout_width="120dp"
+        android:layout_height="120dp"
+        android:gravity="center"
+        android:layout_centerInParent="true"
+        android:background="@mipmap/lfile_emptyimg"/>
+</RelativeLayout>
\ No newline at end of file
diff --git a/fileselectorlib/src/main/res/layout/item_file_list.xml b/fileselectorlib/src/main/res/layout/item_file_list.xml
new file mode 100644
index 0000000..d71985f
--- /dev/null
+++ b/fileselectorlib/src/main/res/layout/item_file_list.xml
@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="54dp"
+    android:gravity="center_vertical"
+    android:orientation="horizontal"
+    android:paddingLeft="10dp"
+    android:background="#fff"
+    >
+
+    <ImageView
+        android:id="@+id/iv_item_file_select_left"
+        android:layout_width="36dp"
+        android:layout_height="42dp"
+        android:src="@mipmap/apk" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="horizontal"
+        android:layout_marginLeft="15dp"
+        android:paddingRight="10dp"
+        android:gravity="center_vertical"
+        android:background="@drawable/bg_bottom_line_gray"
+        >
+
+        <LinearLayout
+            android:layout_width="0dp"
+            android:layout_weight="1"
+            android:layout_height="match_parent"
+            android:orientation="vertical"
+            android:gravity="center_vertical"
+            >
+            <TextView
+                android:id="@+id/tv_item_file_list"
+                android:layout_width="wrap_content"
+                android:layout_height="22dp"
+                android:gravity="center_vertical"
+                android:maxLines="1"
+                android:ellipsize="end"
+                android:text="风控.apk"
+                android:textColor="#333"
+                android:textSize="14sp" />
+
+            <TextView
+                android:id="@+id/tv_item_file_list_desc"
+                android:layout_width="wrap_content"
+                android:layout_height="22dp"
+                android:maxLines="1"
+                android:gravity="center_vertical"
+                android:ellipsize="end"
+                android:text="文件： 文件夹："
+                android:textColor="@android:color/darker_gray"
+                android:textSize="12sp" />
+        </LinearLayout>
+
+        <androidx.appcompat.widget.AppCompatCheckBox
+            android:id="@+id/checkbox_item_file_list"
+            android:checked="true"
+            android:enabled="false"
+            android:layout_width="32dp"
+            android:layout_height="32dp"
+            android:clickable="true"
+            />
+
+        <ImageView
+            android:id="@+id/iv_item_file_select_right"
+            android:layout_width="16dp"
+            android:layout_height="wrap_content"
+            android:src="@mipmap/right"
+            />
+
+    </LinearLayout>
+
+
+
+</LinearLayout>
\ No newline at end of file
diff --git a/fileselectorlib/src/main/res/layout/item_select_sdcard.xml b/fileselectorlib/src/main/res/layout/item_select_sdcard.xml
new file mode 100644
index 0000000..e4557d7
--- /dev/null
+++ b/fileselectorlib/src/main/res/layout/item_select_sdcard.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:background="@drawable/bg_bottom_line_gray"
+    android:textAppearance="?android:attr/textAppearanceSmallPopupMenu"
+    android:layout_marginLeft="15dp"
+    android:id="@+id/tv_item_select_sdcard"
+    android:gravity="center_vertical"
+    android:layout_height="54dp"
+    />
diff --git a/fileselectorlib/src/main/res/layout/pop_select_sdcard.xml b/fileselectorlib/src/main/res/layout/pop_select_sdcard.xml
new file mode 100644
index 0000000..c9def53
--- /dev/null
+++ b/fileselectorlib/src/main/res/layout/pop_select_sdcard.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<androidx.recyclerview.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/rcv_pop_select_sdcard"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:background="#fff" />
diff --git a/fileselectorlib/src/main/res/menu/media_menu.xml b/fileselectorlib/src/main/res/menu/media_menu.xml
new file mode 100644
index 0000000..fe04b70
--- /dev/null
+++ b/fileselectorlib/src/main/res/menu/media_menu.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <item
+        android:id="@+id/browser_select_count"
+        android:orderInCategory="100"
+        android:title="选中(0)"
+        app:showAsAction="always"/>
+
+</menu>
\ No newline at end of file
diff --git a/fileselectorlib/src/main/res/mipmap-xhdpi/apk.png b/fileselectorlib/src/main/res/mipmap-xhdpi/apk.png
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diff --git a/fileselectorlib/src/main/res/mipmap-xhdpi/password.png b/fileselectorlib/src/main/res/mipmap-xhdpi/password.png
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diff --git a/fileselectorlib/src/main/res/mipmap-xhdpi/pdf.png b/fileselectorlib/src/main/res/mipmap-xhdpi/pdf.png
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diff --git a/fileselectorlib/src/main/res/mipmap-xhdpi/png.png b/fileselectorlib/src/main/res/mipmap-xhdpi/png.png
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diff --git a/fileselectorlib/src/main/res/mipmap-xhdpi/png_holder.png b/fileselectorlib/src/main/res/mipmap-xhdpi/png_holder.png
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diff --git a/fileselectorlib/src/main/res/mipmap-xhdpi/ppt.png b/fileselectorlib/src/main/res/mipmap-xhdpi/ppt.png
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diff --git a/fileselectorlib/src/main/res/mipmap-xhdpi/right.png b/fileselectorlib/src/main/res/mipmap-xhdpi/right.png
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diff --git a/fileselectorlib/src/main/res/mipmap-xhdpi/right_arrow.png b/fileselectorlib/src/main/res/mipmap-xhdpi/right_arrow.png
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diff --git a/fileselectorlib/src/main/res/mipmap-xhdpi/wav.png b/fileselectorlib/src/main/res/mipmap-xhdpi/wav.png
new file mode 100644
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diff --git a/fileselectorlib/src/main/res/mipmap-xhdpi/xls.png b/fileselectorlib/src/main/res/mipmap-xhdpi/xls.png
new file mode 100644
index 0000000..f822c6e
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diff --git a/fileselectorlib/src/main/res/mipmap-xhdpi/zip.png b/fileselectorlib/src/main/res/mipmap-xhdpi/zip.png
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diff --git a/fileselectorlib/src/main/res/values/colors.xml b/fileselectorlib/src/main/res/values/colors.xml
new file mode 100644
index 0000000..306be3e
--- /dev/null
+++ b/fileselectorlib/src/main/res/values/colors.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="transparent">#00000000</color>
+    <color name="white">#FFFFFF</color>
+    <color name="Grey50">#FAFAFA</color>
+    <color name="Grey100">#F5F5F5</color>
+    <color name="Grey200">#EEEEEE</color>
+    <color name="Grey300">#E0E0E0</color>
+    <color name="Grey400">#bdbdbd</color>
+    <color name="Grey500">#9e9e9e</color>
+    <color name="Grey600">#757575</color>
+    <color name="Grey700">#616161</color>
+    <color name="Grey800">#3D3D3D</color>
+    <color name="Grey900">#212121</color>
+    <color name="black">#000000</color>
+
+    <color name="titlebg">#6200EE</color>
+</resources>
diff --git a/fileselectorlib/src/main/res/values/strings.xml b/fileselectorlib/src/main/res/values/strings.xml
new file mode 100644
index 0000000..fa3262e
--- /dev/null
+++ b/fileselectorlib/src/main/res/values/strings.xml
@@ -0,0 +1,6 @@
+<resources>
+    <string name="app_name" translatable="false">zly</string>
+    <string name="folder_desc" translatable="false">文件:%1$s&#160;&#160;|&#160;&#160;文件夹:%2$s</string>
+    <string name="file_desc" translatable="false">%1$s&#160;&#160;|&#160;&#160;%2$s</string>
+    <string name="selected_file_count" translatable="false">选中(%1$s/%2$s)</string>
+</resources>
diff --git a/fileselectorlib/src/main/res/values/styles.xml b/fileselectorlib/src/main/res/values/styles.xml
new file mode 100644
index 0000000..be5305d
--- /dev/null
+++ b/fileselectorlib/src/main/res/values/styles.xml
@@ -0,0 +1,23 @@
+<resources>
+
+    <style name="ActionBar">
+        <item name="android:layout_width">match_parent</item>
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:background">?attr/colorPrimary</item>
+        <item name="ab_bottomLineHeight">0dp</item>
+        <item name="ab_statusBarColor">@color/transparent</item>
+        <item name="ab_titleBarHeight">48dp</item>
+    </style>
+    <style name="ActionBar.Common">
+        <item name="abc_titleTextColor">@color/white</item>
+        <item name="abc_titleTextSize">18dp</item>
+        <item name="abc_leftIconColor">@color/white</item>
+        <item name="abc_leftIconPadding">13dp</item>
+        <item name="abc_leftIconMarginLeft">3dp</item>
+        <item name="abc_leftTextColor">@color/white</item>
+        <item name="abc_rightIconColor">@color/white</item>
+        <item name="abc_rightIconPadding">13dp</item>
+        <item name="abc_rightIconMarginRight">3dp</item>
+        <item name="abc_rightTextColor">@color/white</item>
+    </style>
+</resources>
diff --git a/fileselectorlib/src/main/res/xml/provider_paths.xml b/fileselectorlib/src/main/res/xml/provider_paths.xml
new file mode 100644
index 0000000..ffa74ab
--- /dev/null
+++ b/fileselectorlib/src/main/res/xml/provider_paths.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths xmlns:android="http://schemas.android.com/apk/res/android">
+    <external-path name="external_files" path="."/>
+</paths>
\ No newline at end of file
diff --git a/fileselectorlib/src/test/java/com/zlylib/fileselectorlib/ExampleUnitTest.java b/fileselectorlib/src/test/java/com/zlylib/fileselectorlib/ExampleUnitTest.java
new file mode 100644
index 0000000..ea1e339
--- /dev/null
+++ b/fileselectorlib/src/test/java/com/zlylib/fileselectorlib/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.zlylib.fileselectorlib;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file
diff --git a/settings.gradle b/settings.gradle
index 16b3b4b..b33948f 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -9,3 +9,4 @@ include ':locallib_quick_android:quick_android_mvp'
 include ':locallib_quick_android:quick_android_qrcode'
 include ':locallib_quick_android:quick_android_rx_permission'
 include ':locallib_quick_android:quick_android_webview'
+include ':fileselectorlib'
\ No newline at end of file