版本回退到2.0.4，解决了下载成功但安装失败的问题（FileProvider）

app/build.gradle

@@ -43,7 +43,7 @@ android {
         minSdkVersion 24
         targetSdkVersion 30
         versionCode 2
-        versionName "2.0.5"
+        versionName "2.0.4"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 

app/src/main/AndroidManifest.xml

@@ -15,6 +15,15 @@
         android:theme="@style/AppTheme"
         android:largeHeap="true"
         tools:ignore="GoogleAppIndexingWarning">
+        <provider
+            android:name="androidx.core.content.FileProvider"
+            android:authorities="com.pkusz.min_vpn_client.android7.fileprovider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/file_paths" />
+        </provider>
 <!--        <uses-library android:name="com.google.android.things" />-->
         <activity android:name=".activity.welcome.WelcomeActivity">
             <intent-filter>
@@ -66,6 +75,7 @@
     <uses-permission android:name="android.permission.READ_PHONE_STATE" />
     <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
     <uses-permission
         android:name="android.permission.READ_PRIVILEGED_PHONE_STATE"
         tools:ignore="ProtectedPermissions" />

app/src/main/java/com/pkusz/min_vpn_client/utils/updateApp/UpdateAppUtils.java

@@ -10,6 +10,7 @@ import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.PackageManager.NameNotFoundException;
 import android.net.Uri;
+import android.os.Build;
 import android.os.Environment;
 import android.os.Handler;
 import android.os.Message;
@@ -26,7 +27,11 @@ import java.io.InputStream;
 import java.net.HttpURLConnection;
 import java.net.URL;
 
+import static com.blankj.utilcode.util.ActivityUtils.startActivity;
+
 /**  参考链接：https://github.com/ssyandroid/UpdateAppUtils
+ * https://www.jianshu.com/p/bce6a4c779dd
+ * https://blog.csdn.net/wl724120268/article/details/107351169
  * UpdateAppUtils 更新版本
  * <p/>
  * 注意需要存储读写权限与联网权限
@@ -353,20 +358,28 @@ public class UpdateAppUtils {
                 try {
                     long totalSize;// 文件总大小
                     long downloadCount = 0;// 已经下载好的大小
-                    String path;
+//                    String path;
                     // 下载apk，并且安装
-                    if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
-                        path = ct.getExternalFilesDir(null) + "/apk";
-                    } else {
-                        path = ct.getFilesDir() + "/apk";
-                    }
+//                    if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
+//                        path = ct.getExternalFilesDir(null) + "/apk";
+//                    } else {
+//                        path = ct.getFilesDir() + "/apk";
+//                    }
 
-                    File filePath = new File(path);
+//                    File filePath = new File(path);
+//                    if (!filePath.exists() || !filePath.isDirectory()) {
+//                        filePath.mkdirs();
+//                    }
+
+                    // file对象，注意路径要和resource xml里配置的一样
+                    File apkPath = new File(Environment.getExternalStorageDirectory()+File.separator+"myapk", "app.apk");
+                    String path=Environment.getExternalStorageDirectory()+File.separator+"myapk";
+                    File filePath=new File(path);
                     if (!filePath.exists() || !filePath.isDirectory()) {
                         filePath.mkdirs();
                     }
 
-                    File apkPath = new File(filePath, "app.apk");
+//                    File apkPath = new File(filePath, "app.apk");
                     if (!apkPath.exists()) {
                         apkPath.createNewFile();
                     }
@@ -456,10 +469,48 @@ public class UpdateAppUtils {
      * @param t File
      */
     private void installAPK(File t) {
-        Intent intent = new Intent();
-        intent.setAction("android.intent.action.VIEW");
-        intent.addCategory("android.intent.category.DEFAULT");
-        intent.setDataAndType(Uri.fromFile(t), "application/vnd.android.package-archive");
+        Intent intent = new Intent(Intent.ACTION_VIEW);
+        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        if (Build.VERSION.SDK_INT >= 24) {
+            System.out.println("第一种安装");
+            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
+            intent.setDataAndType(getUriForFile(this.ct, t), "application/vnd.android.package-archive");
+        } else {
+            System.out.println("第二种安装");
+            intent.setDataAndType(Uri.fromFile(t), "application/vnd.android.package-archive");
+        }
+        System.out.println("安装完成: "+t.getAbsolutePath());
         ct.startActivity(intent);
     }
+
+    /**
+     * 获取合适的File Uri
+     * @param context
+     * @param file
+     * @return
+     */
+    public static Uri getUriForFile(Context context, File file) {
+        Uri fileUri = null;
+        if (Build.VERSION.SDK_INT >= 24) {
+            fileUri = getUriForFile24(context, file);
+        } else {
+            fileUri = Uri.fromFile(file);
+            System.out.println("fileurl: "+fileUri);
+        }
+        return fileUri;
+    }
+
+    /**
+     * 获取File Uri from 安卓7及以上版本
+     * @param context
+     * @param file
+     * @return
+     */
+    public static Uri getUriForFile24(Context context, File file) {
+        Uri fileUri = androidx.core.content.FileProvider.getUriForFile(context,
+                "com.pkusz.min_vpn_client.android7.fileprovider",
+                file);
+        System.out.println("fileurl24: "+fileUri);
+        return fileUri;
+    }
 }

app/src/main/res/layout/activity_login.xml

@@ -18,7 +18,7 @@
         android:layout_marginLeft="@dimen/dp_20"
         android:layout_marginRight="@dimen/dp_0"
         android:padding="5dp"
-        android:text="v2.0.5"
+        android:text="v2.0.4"
         android:textColor="@color/color_bg_name"
         android:textSize="17.5dp"
         app:layout_constraintRight_toRightOf="parent"

app/src/main/res/xml/file_paths.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths>
+<!--    <external-path-->
+<!--        name="external_storage_root"-->
+<!--        path="" />-->
+<!--    <files-path-->
+<!--        name="files-path"-->
+<!--        path="." />-->
+<!--    <cache-path-->
+<!--        name="cache-path"-->
+<!--        path="." />-->
+<!--    &lt;!&ndash;/storage/emulated/0/Android/data/...&ndash;&gt;-->
+<!--    <external-files-path-->
+<!--        name="external_file_path"-->
+<!--        path="." />-->
+<!--    &lt;!&ndash;代表app 外部存储区域根目录下的文件 Context.getExternalCacheDir目录下的目录&ndash;&gt;-->
+<!--    <external-cache-path-->
+<!--        name="external_cache_path"-->
+<!--        path="." />-->
+    <!--配置root-path。这样子可以读取到sd卡和一些应用分身的目录，否则微信分身保存的图片，
+    就会导致 java.lang.IllegalArgumentException: Failed to find configured
+     root that contains /storage/emulated/999/tencent/MicroMsg/WeiXin/expo
+     rt1544062754693.jpg，在小米6的手机上微信分身有这个crash，华为没有 -->
+    <root-path
+        name="root-path"
+        path="" />
+    <external-path
+        name="myAPK"
+        path="myapk"/>
+</paths>