我想要从Firebase Listadapter播放视频。当用户点击列表时，他们会播放视频，完成活动后，他们将返回原始列表。
当点击第二个视频时，它会启动ExoPlayer活动，但不会播放视频。如果他们按回并选择原始视频，它将播放正常。
public String mTastingWineID;
public String tastingWineId;
public String mWineVideoID;
public String tastingWineVideoId;
private DataSource.Factory mediaDataSourceFactory;
private boolean isPlaying = false;
public int mVideoResource;
public Uri videoUri;
private static final String TAG = "WineMediaActivity";
private static final DefaultBandwidthMeter BANDWIDTH_METER = new DefaultBandwidthMeter();
private SimpleExoPlayer player;
private SimpleExoPlayerView mVideoView;
private ComponentListener componentListener;
private long playbackPostiion;
private int currentWindow;
private boolean playWhenReady = true;
private BandwidthMeter bandwidthMeter;
public Firebase wineMediaUrl;
public ValueEventListener wineMediaUrlListener;
private MediaControllerCompat mediaControllerCompat;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.analytics_media_wine_information);
Bundle bundle = getIntent().getExtras();
mTastingWineID = bundle.getString(Constants.WINE_ID);
tastingWineId = mTastingWineID.toString();
mWineVideoID = bundle.getString(Constants.WINE_VIDEO_ID);
tastingWineVideoId = mWineVideoID.toString();
if (player != null){
player.release();
}
getCurrentVideo();
}
public void getCurrentVideo(){
wineMediaUrl = new Firebase(Constants.FIREBASE_URL).child(FIREBASE_LOCATION_WINE_DETAILS).child(tastingWineId).child(WINE_MEDIA).child(tastingWineVideoId).child("wineVideoUrl");
wineMediaUrlListener = wineMediaUrl.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
componentListener = new ComponentListener();
mVideoView = findViewById(R.id.videoView1);
mVideoView.requestFocus();
Object tempVideoFiles = dataSnapshot.getValue();
String str = tempVideoFiles.toString();
videoUri = Uri.parse(str);
if (videoUri != null) {
initializePlayer();
} else {
Toast.makeText(WineMediaActivity.this, "No Video Found", Toast.LENGTH_SHORT).show();
}
}
@Override
public void onCancelled(FirebaseError firebaseError) {
}
});
mediaDataSourceFactory = new DefaultDataSourceFactory(this, Util.getUserAgent(this, "mediaPlayerSample"), (TransferListener<? super DataSource>) bandwidthMeter);
}
private class ComponentListener implements ExoPlayer.EventListener, VideoRendererEventListener, AudioRendererEventListener {
@Override
public void onTimelineChanged(Timeline timeline, Object manifest) {
}
@Override
public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
}
@Override
public void onLoadingChanged(boolean isLoading) {
}
@Override
public void onPlayerStateChanged(boolean playWhenReady, int playbackState) {
String stateString;
switch (playbackState) {
case ExoPlayer.STATE_IDLE:
stateString = "ExoPlayer.STATE_IDLE";
break;
case ExoPlayer.STATE_BUFFERING:
stateString = "ExoPlayer.STATE_IDLE";
break;
case ExoPlayer.STATE_READY:
stateString = "ExoPlayer.STATE_IDLE";
break;
case ExoPlayer.STATE_ENDED:
stateString = "ExoPlayer.STATE_IDLE";
releasePlayer();
finish();
break;
default:
stateString = "UNKNOWN_STATE";
break;
}
Log.d(TAG, "changed state to: " + stateString + " play when ready: " + playWhenReady);
}
@Override
public void onRepeatModeChanged(int repeatMode) {
}
@Override
public void onShuffleModeEnabledChanged(boolean shuffleModeEnabled) {
}
@Override
public void onPlayerError(ExoPlaybackException error) {
}
@Override
public void onPositionDiscontinuity(int reason) {
}
@Override
public void onPlaybackParametersChanged(PlaybackParameters playbackParameters) {
}
@Override
public void onSeekProcessed() {
}
@Override
public void onAudioEnabled(DecoderCounters counters) {
}
@Override
public void onAudioSessionId(int audioSessionId) {
}
@Override
public void onAudioDecoderInitialized(String decoderName, long initializedTimestampMs, long initializationDurationMs) {
}
@Override
public void onAudioInputFormatChanged(Format format) {
}
@Override
public void onAudioSinkUnderrun(int bufferSize, long bufferSizeMs, long elapsedSinceLastFeedMs) {
}
@Override
public void onAudioDisabled(DecoderCounters counters) {
}
@Override
public void onVideoEnabled(DecoderCounters counters) {
}
@Override
public void onVideoDecoderInitialized(String decoderName, long initializedTimestampMs, long initializationDurationMs) {
}
@Override
public void onVideoInputFormatChanged(Format format) {
}
@Override
public void onDroppedFrames(int count, long elapsedMs) {
}
@Override
public void onVideoSizeChanged(int width, int height, int unappliedRotationDegrees, float pixelWidthHeightRatio) {
}
@Override
public void onRenderedFirstFrame(Surface surface) {
}
@Override
public void onVideoDisabled(DecoderCounters counters) {
}
}
private void initializePlayer() {
if (player == null) {
TrackSelection.Factory adaptiveTrackSelectionFactory = new AdaptiveTrackSelection.Factory(bandwidthMeter);
player = ExoPlayerFactory.newSimpleInstance(new DefaultRenderersFactory(this), new DefaultTrackSelector(adaptiveTrackSelectionFactory), new DefaultLoadControl());
player.addListener(componentListener);
player.setVideoDebugListener(componentListener);
player.setAudioDebugListener(componentListener);
mVideoView.setPlayer(player);
player.setPlayWhenReady(playWhenReady);
player.seekTo(currentWindow, playbackPostiion);
}
MediaSource mediaSource = new ExtractorMediaSource(videoUri, mediaDataSourceFactory, extractorsFactory, null, null);
player.prepare(mediaSource, true, false);
}
@SuppressLint("InlinedApi")
private void hideSystemUi() {
mVideoView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE | View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
}
private void releasePlayer() {
if (player != null) {
playbackPostiion = player.getCurrentPosition();
currentWindow = player.getCurrentWindowIndex();
playWhenReady = player.getPlayWhenReady();
player.removeListener(componentListener);
mVideoView.setPlayer(null);
player.setVideoListener(null);
player.setVideoDebugListener(null);
player.setAudioDebugListener(null);
player.release();
player = null;
if (wineMediaUrlListener != null) {
wineMediaUrl.removeEventListener(wineMediaUrlListener);
wineMediaUrlListener = null;
}
}
}
@Override
protected void onPause() {
super.onPause();
releasePlayer();
}
@Override
public void onStop() {
super.onStop();
releasePlayer();
}
@Override
public void onDestroy() {
super.onDestroy();
releasePlayer();
}
为代码道歉，我对编码很感兴趣并希望有人可以帮助我。
答案 0 :(得分：0)
原来代码很好 - 错误在于上传视频，他们覆盖了之前的视频，意味着前一个视频无法播放。