在onResume（）上，我的ExoPlayer视频屏幕为黑色。 LogCat显示，退出应用程序并返回时，包含视频播放器的SurfaceView被销毁，然后重新创建。我不确定是什么问题，您是否对如何解决此问题或检查代码有什么建议？
/*
// new for resuming a video
if(videoPlayer != null) {
videoPlayer.setPlayWhenReady(playWhenReady);
videoPlayer.seekTo(currentWindow, playbackPosition);
videoPlayer.prepare(videoSource, false, false);
}
*/
this.context = context.getApplicationContext();
Display display = ((WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
Point point = new Point();
display.getSize(point);
videoSurfaceDefaultHeight = point.x;
screenDefaultHeight = point.y;
//videoSurfaceView.setVisibility(View.INVISIBLE);
videoSurfaceView = new PlayerView(this.context);
//videoSurfaceView.setControllerHideOnTouch(true);
videoSurfaceView.hideController();
videoSurfaceView.setVisibility(View.INVISIBLE);
videoSurfaceView.setResizeMode(AspectRatioFrameLayout.RESIZE_MODE_ZOOM);
//videoSurfaceView.setUseController(true);
if(videoSurfaceView != null) {
SurfaceView v = (SurfaceView) videoSurfaceView.getVideoSurfaceView();
surfaceHolder = v.getHolder();
surfaceHolder.addCallback(this);
}
BandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
TrackSelection.Factory videoTrackSelectionFactory =
new AdaptiveTrackSelection.Factory(bandwidthMeter);
TrackSelector trackSelector =
new DefaultTrackSelector(videoTrackSelectionFactory);
// 2. Create the player
videoPlayer = ExoPlayerFactory.newSimpleInstance(context , trackSelector);
// Bind the player to the view.
//videoSurfaceView.setUseController(true);
videoSurfaceView.setPlayer(videoPlayer);
setVolumeControl(VolumeState.ON);
// Attach player to the view.
playerControlView.setPlayer(videoPlayer);
// Prepare the player with the dash media source.
//videoPlayer.prepare(createMediaSource());
//https://stackoverflow.com/questions/52365953/exoplayer-playerview-onclicklistener-not-working
//https://codelabs.developers.google.com/codelabs/exoplayer-intro/#5
//https://exoplayer.dev/ui-components.html
videoSurfaceView.setOnClickListener(view -> {
//videoPlayer.getVideoSurfaceView().setOnClickListener(view -> {
Log.e("GET", "clicked!");
if(videoPlayer.getPlayWhenReady()){
videoPlayer.setPlayWhenReady(false);
}else{
videoPlayer.setPlayWhenReady(true);
}
});
playVideo();
videoPlayer.addListener(new Player.EventListener() {
@Override
public void onTimelineChanged(Timeline timeline, @Nullable Object manifest, int reason) {
}
@Override
public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
}
@Override
public void onLoadingChanged(boolean isLoading) {
}
@Override
public void onPlayerStateChanged(boolean playWhenReady, int playbackState) {
switch (playbackState) {
case Player.STATE_BUFFERING:
Log.e(TAG, "onPlayerStateChanged: Buffering video.");
if (progressBar != null) {
progressBar.setVisibility(View.VISIBLE);
videoSurfaceView.setUseController(false);
}
break;
case Player.STATE_ENDED:
Log.d(TAG, "onPlayerStateChanged: Video ended.");
videoPlayer.seekTo(0);
break;
case Player.STATE_IDLE:
break;
case Player.STATE_READY:
Log.e(TAG, "onPlayerStateChanged: Ready to play.");
if (progressBar != null) {
progressBar.setVisibility(View.GONE);
}
if(!isVideoViewAdded){
addVideoView();
}
break;
default:
break;
}
}
@Override
public void onRepeatModeChanged(int repeatMode) {
}
@Override
public void onShuffleModeEnabledChanged(boolean shuffleModeEnabled) {
}
@Override
public void onPositionDiscontinuity(int reason) {
}
@Override
public void onPlaybackParametersChanged(PlaybackParameters playbackParameters) {
}
@Override
public void onSeekProcessed() {
}
@Override
public void onPlayerError(ExoPlaybackException error) {
switch (error.type) {
case ExoPlaybackException.TYPE_SOURCE:
Log.e(TAG, "TYPE_SOURCE: " + error.getSourceException().getMessage());
break;
case ExoPlaybackException.TYPE_RENDERER:
Log.e(TAG, "TYPE_RENDERER: " + error.getRendererException().getMessage());
break;
case ExoPlaybackException.TYPE_UNEXPECTED:
Log.e(TAG, "TYPE_UNEXPECTED: " + error.getUnexpectedException().getMessage());
break;
}
}
});
}