Question

我有一个带有新闻Feed的应用，其中可以有多种内容类型。我正在使用RecyclerView作为列表。

我遇到问题，如果Feed中有视频播放，用户将应用程序发送到后台，然后从最近的列表中重新启动应用程序，请再次按播放，视频大小错误。

我附上了几张图片来说明问题：

这是应用程序启动并正常播放视频的时间

这是在被发送到后台然后从最近的列表中启动之后。（根据要求手动启动视频）

这是在第二次将应用程序发送到后台并从最近列表重新发送之后。

因此，当应用程序被发送到后台时，onSurfaceTextureDestroyed被调用。

 @Override
    public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {

        surface.release();
        L.i("SURFACE TEXTURE ", "DESTROYED: " + String.valueOf(surface));
        if(!mFullScreen) {
            if(mMediaPlayer!=null) {
                mCurrentPosition = mMediaPlayer.getCurrentPosition();
                releaseMediaPlayer();
            }
        }

所以我在这里打电话给发布媒体播放器。

  //Stop Media player and release resources
    public void releaseMediaPlayer(){
        if(mMediaPlayer!=null){
            if(mMediaPlayer.isPlaying()){
                mMediaPlayer.stop();
            }
            mCurrentPosition = mMediaPlayer.getCurrentPosition();
            mMediaPlayer.reset();
            mMediaPlayer.release();
            mMediaPlayer = null;
        }
    }

我播放视频的方法如下：

 public void startVideo(String url) {
        mUrl = url;

        if (mMediaPlayer != null) {
            mMediaPlayer.reset();
            mMediaPlayer.release();
            mMediaPlayer = new MediaPlayer();
        }
        else {
            mMediaPlayer = new MediaPlayer();
        }

        try {
            L.i(getClass().getName(), mUrl);
            mMediaPlayer.setOnCompletionListener(this);
            mMediaPlayer.setOnBufferingUpdateListener(this);
            mMediaPlayer.setOnPreparedListener(this);
            mMediaPlayer.setOnInfoListener(this);
            mMediaPlayer.setOnErrorListener(this);
            mMediaPlayer.setSurface(new Surface(mSurface));
            mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
            mMediaPlayer.setDataSource(url);
            mMediaPlayer.prepareAsync();
        }
        catch (IOException e) {
            e.printStackTrace();
        }
    }

然后在我的onPrepared方法

中

@Override
public void onPrepared(MediaPlayer mp) {

    mTextureView.setOnTouchListener(new ControlTouchListener());
    mControllerView.setMediaPlayer(this);
    mControllerView.setAnchorView(mAnchorView);

    L.i(getClass().getSimpleName(), "Video Height: " + String.valueOf(mMediaPlayer.getVideoHeight()) + "Video Width: " + String.valueOf(mMediaPlayer.getVideoWidth()));
    mMediaPlayer.getVideoHeight();

    if (mMimeType != null && mMimeType.contains("audio")) {
        mProgress.setVisibility(View.GONE);
        mControllerView.setTimeout(mMediaPlayer.getDuration());
        mControllerView.getFullScreenButton().setVisibility(View.GONE);
    }
    else {
        mControllerView.setTimeout(3000);
    }

    if (!mFullScreen) {
        if (mMimeType.contains("video")) {
            MediaUtils.handleVideoAspectRatio(mp, mTextureView, mControllerView);
        }
        else {
            mMediaPlayer.start();
            mControllerView.updatePausePlay();
        }
    }
    else {
        mMediaPlayer.start();
        mControllerView.updatePausePlay();
    }

}

我还有一个handleVideoAspectRatio方法，以确保视频是否是纵向的：

   public static void handleVideoAspectRatio(MediaPlayer mediaPlayer, TextureView textureView, MediaControllerView controllerView) {

        int textureViewHeight = textureView.getHeight();

        L.i("HANDLE ASPECT RATIO: " ,  "TEXTURE VIEW HEIGHT: "+String.valueOf(textureViewHeight));
        int textureViewWidth = textureView.getWidth();

        L.i("HANDLE ASPECT RATIO: " ,  "TEXTURE VIEW WIDTH: "+String.valueOf(textureViewWidth));

        float videoHeight = mediaPlayer.getVideoHeight();
        float videoWidth = mediaPlayer.getVideoWidth();

        float ratioHeight = textureViewHeight/videoHeight;
        float ratioWidth = textureViewWidth/videoWidth;

        float aspectRatio = videoWidth/videoHeight;

        ViewGroup.LayoutParams textureViewLayoutParams = textureView.getLayoutParams();

        if(ratioWidth>ratioHeight){
            textureViewLayoutParams.width = (int)(textureViewHeight * aspectRatio);
            textureViewLayoutParams.height = textureViewHeight;
        }else{
            textureViewLayoutParams.width = textureViewWidth;
            textureViewLayoutParams.height = (int)(textureViewWidth * aspectRatio);
        }

        textureView.setLayoutParams(textureViewLayoutParams);

        mediaPlayer.start();

        controllerView.updatePausePlay();
    }

我试图在播放之前用布局参数重置纹理视图的大小，以防回收者视图保留上一个视频中的参数但不起作用

任何人都可以帮忙告诉我为什么会这样吗？

媒体播放器在onPause / OnResume之后调整大小

0 个答案: