权限拒绝：在 API 21 中打开提供程序 MediaDocumentsProvider

Question

我正在开发 APP，我可以在其中选择录制或选择已存储的视频。我能够毫无问题地执行这些操作。但是当我关闭 Activity 并再次打开它时，我的 Activity 无法再次访问 URI。

我得到了例外： D/MediaPlayer：setDataSource SecurityException 发生：

java.lang.SecurityException: Permission Denial: opening provider com.android.providers.media.MediaDocumentsProvider from ProcessRecord{2e396c8 6917:com.rahul.android.casteeng/u0a145} (pid=6917, uid=10145) requires android.permission.MANAGE_DOCUMENTS or android.permission.MANAGE_DOCUMENTS
at android.os.Parcel.readException(Parcel.java:1540)
at android.os.Parcel.readException(Parcel.java:1493)
at android.app.ActivityManagerProxy.getContentProvider(ActivityManagerNative.java:3654)
at android.app.ActivityThread.acquireProvider(ActivityThread.java:5299)
at android.app.ContextImpl$ApplicationContentResolver.acquireUnstableProvider(ContextImpl.java:2966)
at android.content.ContentResolver.acquireUnstableProvider(ContentResolver.java:1495)
at android.content.ContentResolver.openTypedAssetFileDescriptor(ContentResolver.java:1115)
at android.content.ContentResolver.openAssetFileDescriptor(ContentResolver.java:970)
at android.content.ContentResolver.openAssetFileDescriptor(ContentResolver.java:897)
at android.media.MediaPlayer.setDataSource(MediaPlayer.java:1108)
at android.widget.VideoView.openVideo(VideoView.java:376)
at android.widget.VideoView.access$2100(VideoView.java:73)
at android.widget.VideoView$7.surfaceCreated(VideoView.java:657)
at android.view.SurfaceView.updateWindow(SurfaceView.java:682)
at android.view.SurfaceView$3.onPreDraw(SurfaceView.java:200)
at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:921)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2214)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1230)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6748)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:777)
at android.view.Choreographer.doCallbacks(Choreographer.java:590)
at android.view.Choreographer.doFrame(Choreographer.java:560)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:763)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:6117)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)

我已经在 AndroidMenifest.xml 中配置权限为

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> 

任何建议都会有所帮助。提前致谢！

Answer 1

我也尝试过添加运行时权限，但没有任何效果。我更新了我的三星标签，似乎新的更新解决了这个问题。