android 检查媒体播放器是否在 TextureView 中完成

Question

我有一个 TextureView.i 可以播放我 TextureView 中评估文件夹中的视频。现在我想检查视频是否 finished.i 写了 setOnCompletionListener 而不是 working.this 是我的来源

 private void playVideoAnimation()
{
    textureView.setVisibility(View.VISIBLE);
    mMediaPlayer = new MediaPlayer();

    textureView.setSurfaceTextureListener(new TextureView.SurfaceTextureListener() {
        @Override
        public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, int i, int i2) {
            Surface surface = new Surface(surfaceTexture);

            try {
                Log.e("FILE_NAME",FILE_NAME);
                AssetFileDescriptor afd = getAssets().openFd(FILE_NAME);

                mMediaPlayer.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength());
                mMediaPlayer.setSurface(surface);
                mMediaPlayer.setLooping(true);
                mMediaPlayer.prepareAsync();
                mMediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
                    @Override
                    public void onPrepared(MediaPlayer mediaPlayer) {
                        mediaPlayer.start();
                    }
                });

                mMediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {

                    @Override
                    public void onCompletion(MediaPlayer mp) {

                        Log.e("FILE_NAME", "Finished");
                    }

                });



            } catch (IllegalArgumentException e) {
                Log.d(TAG, e.getMessage());
            } catch (SecurityException e) {
                Log.d(TAG, e.getMessage());
            } catch (IllegalStateException e) {
                Log.d(TAG, e.getMessage());
            } catch (IOException e) {
                Log.d(TAG, e.getMessage());
            }
        }

        @Override
        public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {

        }

        @Override
        public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {

            return false;
        }

        @Override
        public void onSurfaceTextureUpdated(SurfaceTexture surface) {

        }
    });
}

我还在 setSurfaceTextureListener 之外编写了 setOnCompletionListener 侦听器，但也无法正常工作。我该如何解决我的问题？如果有人知道解决方案请帮助我

Answer 1

很可能，您的 OnCompletionListener 从未被调用，因为以下行：

mMediaPlayer.setLooping(true);

根据 MediaPlayer documentation:

When the playback reaches the end of stream, the playback completes.

If the looping mode was being set to true with setLooping(boolean), the MediaPlayer object shall remain in the Started state.

If the looping mode was set to false, the player engine calls a user supplied callback method, OnCompletion.onCompletion(), if a OnCompletionListener is registered beforehand via setOnCompletionListener(OnCompletionListener). The invoke of the callback signals that the object is now in the PlaybackCompleted state.

While in the PlaybackCompleted state, calling start() can restart the playback from the beginning of the audio/video source.

如果您想在 MediaPlayer 完成播放时获得回调并且还循环播放，您可以更改您的实现以遵循中给出的建议第三个要点：删除 mMediaPlayer.setLooping(true) 并在 OnCompletionListener 中调用 mp.start() 从头开始播放。

android 检查媒体播放器是否在 TextureView 中完成

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