检查是否为另一个应用程序授予了外部存储管理器

Question

我需要检查其他应用程序是否具有外部存储管理器的权限。和

Environment.isExternalStorageManager()

我检查当前应用程序是否已被授予。我如何为另一个应用程序执行此操作？我已经尝试检查权限状态

getPackageManager().checkPermission(Manifest.permission.MANAGE_EXTERNAL_STORAGE, "dk.tacit.android.foldersync.lite")

但它总是返回 -1，这意味着 PERMISSION_DENIED，即使授予了权限。

Answer 1

您可以尝试使用AppOpsManager类，如下所示：

try {
        PackageManager packageManager = this.getPackageManager();
        ApplicationInfo info = packageManager.getApplicationInfo("package name",0);
        Log.d("TAG", "onCreate: "+hasPermission(this,info)); 
        
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
    }

现在的hasPermission功能：

@RequiresApi(api = Build.VERSION_CODES.R)
public static boolean hasPermission(Context context,ApplicationInfo info) {
    boolean granted = false;
    AppOpsManager appOps = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
    int mode = appOps.unsafeCheckOpNoThrow(AppOpsManager.permissionToOp("android.permission.MANAGE_EXTERNAL_STORAGE"), info.uid, info.packageName);
    if (mode == AppOpsManager.MODE_DEFAULT)
        granted = (context.checkCallingOrSelfPermission(Manifest.permission.MANAGE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED);
    else
        granted = (mode == AppOpsManager.MODE_ALLOWED);
    return granted;
}

您还必须QUERY_ALL_PACKAGES在清单中声明许可：

<uses-permission
    android:name="android.permission.QUERY_ALL_PACKAGES"
    tools:ignore="QueryAllPackagesPermission" />