Android VideoView错误1,0

Question

我有一个应用程序,主要目标是播放特定的视频文件.

它有时会正确播放视频.但有时候它给了我这个错误:

03-21 14:52:36.181: I/AwesomePlayer(119): 
setDataSource_l('/data/data/my.package.name/files/MyMovie.mp4')
03-21 14:52:36.196: W/VideoView(26612): Unable to open content: /data/data/my.package.name/files/MyMovie.mp4
03-21 14:52:36.196: W/VideoView(26612): java.lang.IllegalArgumentException: The surface has been released
03-21 14:52:36.196: W/VideoView(26612):     at android.media.MediaPlayer._setVideoSurface(Native Method)
03-21 14:52:36.196: W/VideoView(26612):     at android.media.MediaPlayer.setDisplay(MediaPlayer.java:633)
03-21 14:52:36.196: W/VideoView(26612):     at android.widget.VideoView.openVideo(VideoView.java:222)
03-21 14:52:36.196: W/VideoView(26612):     at android.widget.VideoView.access$2000(VideoView.java:49)
03-21 14:52:36.196: W/VideoView(26612):     at android.widget.VideoView$6.surfaceCreated(VideoView.java:465)
03-21 14:52:36.196: W/VideoView(26612):     at android.view.SurfaceView.updateWindow(SurfaceView.java:533)
03-21 14:52:36.196: W/VideoView(26612):     at android.view.SurfaceView.access$000(SurfaceView.java:81)
03-21 14:52:36.196: W/VideoView(26612):     at android.view.SurfaceView$3.onPreDraw(SurfaceView.java:169)
03-21 14:52:36.196: W/VideoView(26612):     at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:590)
03-21 14:52:36.196: W/VideoView(26612):     at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1617)
03-21 14:52:36.196: W/VideoView(26612):     at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2442)
03-21 14:52:36.196: W/VideoView(26612):     at android.os.Handler.dispatchMessage(Handler.java:99)
03-21 14:52:36.196: W/VideoView(26612):     at android.os.Looper.loop(Looper.java:137)
03-21 14:52:36.196: W/VideoView(26612):     at android.app.ActivityThread.main(ActivityThread.java:4424)
03-21 14:52:36.196: W/VideoView(26612):     at java.lang.reflect.Method.invokeNative(Native Method)
03-21 14:52:36.196: W/VideoView(26612):     at java.lang.reflect.Method.invoke(Method.java:511)
03-21 14:52:36.196: W/VideoView(26612):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
03-21 14:52:36.196: W/VideoView(26612):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
03-21 14:52:36.196: W/VideoView(26612):     at dalvik.system.NativeStart.main(Native Method)
03-21 14:52:36.196: D/VideoView(26612): Error: 1,0

我正在使用准备好的监听器来调用start,如下所示:

mVideoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
    @Override
    public void onPrepared(MediaPlayer arg0) {
        mVideoView.start();

    }
});

我用这个设置数据源:

file = new File(this.getFilesDir() + File.separator + VIDEO_FILE_NAME);
mVideoView.setVideoPath(file.getAbsolutePath());

我确定该文件确实存在并且格式正确.

我的应用程序可以从警报触发器启动.当设备屏幕关闭时触发器触发并启动我的应用程序似乎只是一个问题(我的应用程序将通过唤醒锁定打开屏幕).如果我手动启动应用程序,或触发器发生在视频上的屏幕播放正常.这个错误也只发生在Galaxy Nexus上.我可以在Nexus S(以及其他一长串列表)上运行完全相同的代码,并且每次都可以正常运行.

有没有人知道可能导致这种行为的Galaxy Nexus或ICS特有的东西？对于我可以尝试修复的内容有什么建议吗？

Answer 1

UThis已连接到SurfaceView.在MediaPlayer上调用prepare后,确保没有触摸SurfaceView,并且它是可见的.在您尝试唤醒屏幕的情况下,请确保一切都以正确的顺序发生.因此准备MediaPlayer进行播放是应用程序应该做的最后一件事.可能是应用程序完全唤醒之前启动准备/回放,导致应用程序尝试操作SurfaceView.

以下代码示例说明了如何触发此类异常:

   private void setupVideo(String file){
      ...
      mSurfaceView = (SurfaceView) findViewById(R.id.surface);
      mHolder = mSurfaceView.getHolder(); // DON'T TOUCH BEHIND THIS POINT
      mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
      mMediaPlayer.setDisplay(mHolder);
      mMediaPlayer.setOnPreparedListener(this);
      mMediaPlayer.prepare();
   }
   @Override
   public void onPrepared(final MediaPlayer mp) {
      mSurfaceView.setVisibility(View.VISIBLE); // THIS WILL CAUSE THE ERROR
      mp.start();
   }

Answer 2

我有一个ICS没有名牌的问题.

调用setDisplay方法时不会创建SurfaceHolder,这会导致:

03-21 14:52:36.196: W/VideoView(26612): java.lang.IllegalArgumentException: The surface has been released

要修复它,我使用:

private void setupVideo(String file){
    ...
    mMediaPlayer.setOnPreparedListener(this);
    mHolder=mSurfaceView.getHolder();
    mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
    mHolder.setKeepScreenOn(true);
    mHolder.addCallback(new SurfaceHolder.Callback() {
        @Override
        public void surfaceCreated(SurfaceHolder holder) {
            mHolder=holder;
            mMediaPlayer.setDisplay(mHolder);
            ...
            mMediaPlayer.prepare();
        }
        @Override
        public void surfaceDestroyed(SurfaceHolder holder) { ... }
        @Override
        public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { ... }
    });
}

@Override
public void onPrepared(final MediaPlayer mp) {
    ...
    mMediaPlayer.start();
}