Android 选择新曲目时更换曲目的Exoplayer
我正在使用一个服务播放音乐，所以当我第一次从活动启动服务并退出时，它会在后台正常播放，但当我启动另一个音乐并退出后台时，播放停止，你知道为什么会发生这种情况吗Android 选择新曲目时更换曲目的Exoplayer,android,service,exoplayer,exoplayer2.x,Android,Service,Exoplayer,Exoplayer2.x,我正在使用一个服务播放音乐，所以当我第一次从活动启动服务并退出时，它会在后台正常播放，但当我启动另一个音乐并退出后台时，播放停止，你知道为什么会发生这种情况吗 public class AudioPlayerService extends Service implements Player.EventListener { private final IBinder mBinder = new LocalBinder(); private SimpleExoPlayer play
public class AudioPlayerService extends Service implements Player.EventListener {
private final IBinder mBinder = new LocalBinder();
private SimpleExoPlayer player;
private Item item;
private PlayerNotificationManager playerNotificationManager;
@Override
public void onCreate() {
super.onCreate();
}
@Override
public void onDestroy() {
releasePlayer();
super.onDestroy();
}
private void releasePlayer() {
if (player != null) {
playerNotificationManager.setPlayer(null);
player.release();
player = null;
stopSelf();
}
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
public SimpleExoPlayer getPlayerInstance() {
if (item != null && player == null && !TextUtils.isEmpty(item.getUrl())) {
startPlayer();
}
return player;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
releasePlayer();
Bundle b = intent.getBundleExtra(AppConstants.BUNDLE_KEY);
if (b != null) {
item = b.getParcelable(AppConstants.ITEM_KEY);
}
if (item != null && player == null && !TextUtils.isEmpty(item.getUrl())) {
startPlayer();
}
String action = intent.getAction();
if (player != null) {
if (!TextUtils.isEmpty(action) && action.equalsIgnoreCase(ACTION_PLAY)) {
player.setPlayWhenReady(true);
}
if (!TextUtils.isEmpty(action) && action.equalsIgnoreCase(ACTION_PAUSE)) {
player.setPlayWhenReady(false);
}
}
return START_STICKY;
}
private void startPlayer() {
final Context context = this;
Uri uri = Uri.parse(item.getUrl());
player = ExoPlayerFactory.newSimpleInstance(context, new DefaultTrackSelector());
DefaultDataSourceFactory dataSourceFactory = new DefaultDataSourceFactory(context,
Util.getUserAgent(context, getString(R.string.app_name)));
CacheDataSourceFactory cacheDataSourceFactory = new CacheDataSourceFactory(
CommonUtils.getCache(context),
dataSourceFactory,
CacheDataSource.FLAG_IGNORE_CACHE_ON_ERROR);
MediaSource mediaSource = new ExtractorMediaSource.Factory(cacheDataSourceFactory)
.createMediaSource(uri);
player.prepare(mediaSource);
player.addListener(this);
player.setPlayWhenReady(true);
playerNotificationManager = PlayerNotificationManager.createWithNotificationChannel(context, AppConstants.PLAYBACK_CHANNEL_ID,
R.string.playback_channel_name,
AppConstants.PLAYBACK_NOTIFICATION_ID,
new PlayerNotificationManager.MediaDescriptionAdapter() {
@Override
public String getCurrentContentTitle(Player player) {
return item.getTitle();
}
@Nullable
@Override
public PendingIntent createCurrentContentIntent(Player player) {
Intent intent = new Intent(context, PlayerActivity.class);
Bundle serviceBundle = new Bundle();
serviceBundle.putParcelable(AppConstants.ITEM_KEY, item);
intent.putExtra(AppConstants.BUNDLE_KEY, serviceBundle);
return PendingIntent.getActivity(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
}
@Nullable
@Override
public String getCurrentContentText(Player player) {
return item.getSummary();
}
@Nullable
@Override
public Bitmap getCurrentLargeIcon(Player player, PlayerNotificationManager.BitmapCallback callback) {
return null;
}
}
);
playerNotificationManager.setNotificationListener(new PlayerNotificationManager.NotificationListener() {
@Override
public void onNotificationStarted(int notificationId, Notification notification) {
startForeground(notificationId, notification);
}
@Override
public void onNotificationCancelled(int notificationId) {
stopSelf();
}
});
playerNotificationManager.setPlayer(player);
}
private void updateWidget(boolean playWhenReady) {
Intent intent = new Intent(this, PlayerWidget.class);
intent.setAction(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
int[] ids = AppWidgetManager.getInstance(getApplication())
.getAppWidgetIds(new ComponentName(getApplication(), PlayerWidget.class));
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, ids);
Bundle serviceBundle = new Bundle();
serviceBundle.putParcelable(AppConstants.ITEM_KEY, item);
intent.putExtra(AppConstants.BUNDLE_KEY, serviceBundle);
intent.putExtra(PlayerWidget.WIDGET_PLAYING_EXTRA, playWhenReady);
sendBroadcast(intent);
}
@Override
public void onTimelineChanged(Timeline timeline, 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) {
updateWidget(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() {
}
public class LocalBinder extends Binder {
public AudioPlayerService getService() {
return AudioPlayerService.this;
}
}
}
public class PlayerActivity extends BaseActivity {
@BindView(R.id.video_view)
PlayerView mPlayerView;
@BindView(R.id.tvTitle)
TextView mTvTitle;
@BindView(R.id.tvSummary)
TextView mTvSummary;
@BindView(R.id.ivThumbnail)
ImageView mIvThumb;
@BindView(R.id.adView)
AdView mAdView;
private String mTitle;
private String mSummary;
private String mImage;
private AudioPlayerService mService;
private Intent intent;
private String shareableLink;
private boolean mBound = false;
private ServiceConnection mConnection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName componentName, IBinder iBinder) {
AudioPlayerService.LocalBinder binder = (AudioPlayerService.LocalBinder) iBinder;
mService = binder.getService();
mBound = true;
initializePlayer();
}
@Override
public void onServiceDisconnected(ComponentName componentName) {
mBound = false;
}
};
@SuppressLint("MissingSuperCall")
@Override
protected void onCreate(Bundle savedInstanceState) {
onCreate(savedInstanceState, R.layout.activity_player);
Bundle b = getIntent().getBundleExtra(AppConstants.BUNDLE_KEY);
if (b != null) {
Item item = b.getParcelable(AppConstants.ITEM_KEY);
shareableLink = b.getString(AppConstants.SHARE_KEY);
String mUrl = item.getUrl();
mImage = item.getImage();
mTitle = item.getTitle();
mSummary = item.getSummary();
intent = new Intent(this, AudioPlayerService.class);
Bundle serviceBundle = new Bundle();
serviceBundle.putParcelable(AppConstants.ITEM_KEY, item);
intent.putExtra(AppConstants.BUNDLE_KEY, serviceBundle);
Util.startForegroundService(this, intent);
mPlayerView.setUseController(true);
mPlayerView.showController();
mPlayerView.setControllerAutoShow(true);
mPlayerView.setControllerHideOnTouch(false);
}
AdRequest adRequest = new AdRequest.Builder().build();
mAdView.loadAd(adRequest);
}
private void initializePlayer() {
if (mBound) {
SimpleExoPlayer mPlayer = mService.getPlayerInstance();
mPlayerView.setPlayer(mPlayer);
}
}
@Override
public void onStart() {
super.onStart();
bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
initializePlayer();
setUI();
}
private void setUI() {
mTvTitle.setText(mTitle);
mTvSummary.setText(Html.fromHtml(mSummary));
GlideApp.with(this)
.load(mImage)
.placeholder(R.drawable.about_background)
.diskCacheStrategy(DiskCacheStrategy.ALL)
.into(mIvThumb);
}
@Override
protected void onStop() {
unbindService(mConnection);
mBound = false;
super.onStop();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.player_menu, menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.share_podcast:
Intent shareIntent = new Intent();
shareIntent.setAction(Intent.ACTION_SEND);
shareIntent.putExtra(Intent.EXTRA_SUBJECT, mTitle);
shareIntent.putExtra(Intent.EXTRA_TEXT, mTitle + "\n\n" + shareableLink);
shareIntent.setType("text/plain");
startActivity(Intent.createChooser(shareIntent, getString(R.string.share_text)));
return true;
case android.R.id.home:
onBackPressed();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
@Override
public void onToolBarSetUp(Toolbar toolbar, ActionBar actionBar) {
TextView tvHeader = toolbar.findViewById(R.id.tvClassName);
tvHeader.setText(R.string.app_name);
}
}