使用 VideoView 时出现 java.io.FileNotFoundException

Question

我有以下代码：

   VideoView videoView = (VideoView)findViewById(R.id.instructionsvideo);
   assert videoView != null;
   videoView.setVideoPath("android.resource://" + getPackageName() + R.raw.testnatureclip);
   videoView.start();

“testnatureclip”位于原始文件夹中：

由于某种原因，在我构建项目后，文件变为红色。

这是我得到的错误： com.roymunson.vroy.copypastakeyboard W/MediaPlayer: Couldn't open file on client side; trying server side: java.io.FileNotFoundException: No package found for authority: android.resource://com.roymunson.vroy.copypastakeyboard2131165184

mp4应该是H.264格式编码的，不知道我用的在线编码服务有没有用。

此外，视频视图与文件的尺寸不同，如果这很重要的话。

有什么问题？文件路径是否不正确，或者我在初始化视频视图时缺少一些元素？

更新一：

使用 User8 的解决方案出现以下错误：

roymunson.vroy.copypastakeyboard W/MediaPlayer: Couldn't open file on client side; trying server side: java.io.FileNotFoundException: No content provider: /2131165184
10-01 17:36:20.912 28156-28156/com.roymunson.vroy.copypastakeyboard W/VideoView: Unable to open content: /2131165184
                                                                                 java.io.IOException: setDataSource failed.
                                                                                     at android.media.MediaPlayer.setDataSource(MediaPlayer.java:1100)
                                                                                     at android.media.MediaPlayer.setDataSource(MediaPlayer.java:1074)
                                                                                     at android.media.MediaPlayer.setDataSource(MediaPlayer.java:1028)
                                                                                     at android.widget.VideoView.openVideo(VideoView.java:346)
                                                                                     at android.widget.VideoView.-wrap0(VideoView.java)
                                                                                     at android.widget.VideoView$7.surfaceCreated(VideoView.java:623)
                                                                                     at android.view.SurfaceView.updateWindow(SurfaceView.java:582)
                                                                                     at android.view.SurfaceView$3.onPreDraw(SurfaceView.java:177)
                                                                                     at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:944)
                                                                                     at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2067)
                                                                                     at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1119)
                                                                                     at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6060)
                                                                                     at android.view.Choreographer$CallbackRecord.run(Choreographer.java:858)
                                                                                     at android.view.Choreographer.doCallbacks(Choreographer.java:670)
                                                                                     at android.view.Choreographer.doFrame(Choreographer.java:606)
                                                                                     at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:844)
                                                                                     at android.os.Handler.handleCallback(Handler.java:746)
                                                                                     at android.os.Handler.dispatchMessage(Handler.java:95)
                                                                                     at android.os.Looper.loop(Looper.java:148)
                                                                                     at android.app.ActivityThread.main(ActivityThread.java:5443)
                                                                                     at java.lang.reflect.Method.invoke(Native Method)
                                                                                     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
                                                                                     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)

Answer 1

我找到了 2 个解决方案：

String uriPath = "android.resource://" + getPackageName() + "/raw/testnatureclip";
Uri uri = Uri.parse(uriPath);
videoView.setVideoURI(uri);

或

videoView.setVideoURI(Uri.parse("android.resource://ABSOLUTE_PACKAGE_NAME/" + R.raw.testnatureclip));

Answer 2

试试这个，指定一个绝对包名路径并使用 Uri：

 videoView.setVideoURI(Uri.parse("android.resource://com.roymunson.vroy.copypastakeyboard/" 
                                  + R.raw.testnatureclip));

另外，你为什么不直接使用getPackageResourcePath()来访问资源呢？

那么，您通常无法通过这种方式访问​​它们，您应该仅使用他们的resourceID，这里是关于该主题的讨论：Access resource files in Android。

Answer 3

尝试从原始文件夹获取路径：

    String path = "android.resource://" + getPackageName() + "/" + R.raw.testnatureclip;

我建议使用ExoPlayer 而不是VideoView：

应用分级：

implementation 'com.google.android.exoplayer:exoplayer:2.10.8'

布局xml：

<com.google.android.exoplayer2.ui.PlayerView
        android:id="@+id/video_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_centerInParent="true" />

java代码：

PlayerView videoView = findViewById(R.id.video_view);
SimpleExoPlayer player = ExoPlayerFactory.newSimpleInstance(this);
videoView.setPlayer(player);
// Produces DataSource instances through which media data is loaded.
DataSource.Factory dataSourceFactory = new DefaultDataSourceFactory(this, Util.getUserAgent(this, "yourApplicationName"));
// This is the MediaSource representing the media to be played.
MediaSource videoSource = new ProgressiveMediaSource.Factory(dataSourceFactory).createMediaSource(Uri.parse(path));
// Prepare the player with the source.
player.prepare(videoSource);
player.setPlayWhenReady(true);