Java tutorial
/* * This is the source code of Telegram for Android v. 3.x.x. * It is licensed under GNU GPL v. 2 or later. * You should have received a copy of the license in this archive (see LICENSE). * * Copyright Nikolai Kudashov, 2013-2015. */ package org.telegram.messenger; import android.annotation.SuppressLint; import android.app.Notification; import android.app.PendingIntent; import android.app.Service; import android.content.ComponentName; import android.content.Intent; import android.graphics.Bitmap; import android.media.AudioManager; import android.media.MediaMetadataRetriever; import android.media.RemoteControlClient; import android.os.Build; import android.os.IBinder; import android.support.v4.app.NotificationCompat; import android.telephony.PhoneStateListener; import android.telephony.TelephonyManager; import android.view.View; import android.widget.RemoteViews; import org.telegram.messenger.audioinfo.AudioInfo; import org.telegram.ui.LaunchActivity; public class MusicPlayerService extends Service implements AudioManager.OnAudioFocusChangeListener, NotificationCenter.NotificationCenterDelegate { public static final String NOTIFY_PREVIOUS = "org.telegram.android.musicplayer.previous"; public static final String NOTIFY_CLOSE = "org.telegram.android.musicplayer.close"; public static final String NOTIFY_PAUSE = "org.telegram.android.musicplayer.pause"; public static final String NOTIFY_PLAY = "org.telegram.android.musicplayer.play"; public static final String NOTIFY_NEXT = "org.telegram.android.musicplayer.next"; private RemoteControlClient remoteControlClient; private AudioManager audioManager; private static boolean ignoreAudioFocus = false; private PhoneStateListener phoneStateListener; private static boolean supportBigNotifications = Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN; private static boolean supportLockScreenControls = Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH; @Override public IBinder onBind(Intent intent) { return null; } @Override public void onCreate() { audioManager = (AudioManager) getSystemService(AUDIO_SERVICE); NotificationCenter.getInstance().addObserver(this, NotificationCenter.audioProgressDidChanged); NotificationCenter.getInstance().addObserver(this, NotificationCenter.audioPlayStateChanged); try { phoneStateListener = new PhoneStateListener() { @Override public void onCallStateChanged(int state, String incomingNumber) { if (state == TelephonyManager.CALL_STATE_RINGING) { if (MediaController.getInstance() .isPlayingAudio(MediaController.getInstance().getPlayingMessageObject()) && !MediaController.getInstance().isAudioPaused()) { MediaController.getInstance() .pauseAudio(MediaController.getInstance().getPlayingMessageObject()); } } else if (state == TelephonyManager.CALL_STATE_IDLE) { } else if (state == TelephonyManager.CALL_STATE_OFFHOOK) { } super.onCallStateChanged(state, incomingNumber); } }; TelephonyManager mgr = (TelephonyManager) getSystemService(TELEPHONY_SERVICE); if (mgr != null) { mgr.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE); } } catch (Exception e) { FileLog.e("tmessages", e); } super.onCreate(); } @SuppressLint("NewApi") @Override public int onStartCommand(Intent intent, int flags, int startId) { try { MessageObject messageObject = MediaController.getInstance().getPlayingMessageObject(); if (messageObject == null) { AndroidUtilities.runOnUIThread(new Runnable() { @Override public void run() { stopSelf(); } }); return START_STICKY; } if (supportLockScreenControls) { ComponentName remoteComponentName = new ComponentName(getApplicationContext(), MusicPlayerReceiver.class.getName()); try { if (remoteControlClient == null) { audioManager.registerMediaButtonEventReceiver(remoteComponentName); Intent mediaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON); mediaButtonIntent.setComponent(remoteComponentName); PendingIntent mediaPendingIntent = PendingIntent.getBroadcast(this, 0, mediaButtonIntent, 0); remoteControlClient = new RemoteControlClient(mediaPendingIntent); audioManager.registerRemoteControlClient(remoteControlClient); } remoteControlClient.setTransportControlFlags(RemoteControlClient.FLAG_KEY_MEDIA_PLAY | RemoteControlClient.FLAG_KEY_MEDIA_PAUSE | RemoteControlClient.FLAG_KEY_MEDIA_PLAY_PAUSE | RemoteControlClient.FLAG_KEY_MEDIA_STOP | RemoteControlClient.FLAG_KEY_MEDIA_PREVIOUS | RemoteControlClient.FLAG_KEY_MEDIA_NEXT); } catch (Exception e) { FileLog.e("tmessages", e); } } createNotification(messageObject); } catch (Exception e) { e.printStackTrace(); } return START_STICKY; } @SuppressLint("NewApi") private void createNotification(MessageObject messageObject) { String songName = messageObject.getMusicTitle(); String authorName = messageObject.getMusicAuthor(); AudioInfo audioInfo = MediaController.getInstance().getAudioInfo(); RemoteViews simpleContentView = new RemoteViews(getApplicationContext().getPackageName(), R.layout.player_small_notification); RemoteViews expandedView = null; if (supportBigNotifications) { expandedView = new RemoteViews(getApplicationContext().getPackageName(), R.layout.player_big_notification); } Intent intent = new Intent(ApplicationLoader.applicationContext, LaunchActivity.class); intent.setAction("com.tmessages.openplayer"); intent.setFlags(32768); PendingIntent contentIntent = PendingIntent.getActivity(ApplicationLoader.applicationContext, 0, intent, 0); Notification notification = new NotificationCompat.Builder(getApplicationContext()) .setSmallIcon(R.drawable.player).setContentIntent(contentIntent).setContentTitle(songName).build(); notification.contentView = simpleContentView; if (supportBigNotifications) { notification.bigContentView = expandedView; } setListeners(simpleContentView); if (supportBigNotifications) { setListeners(expandedView); } Bitmap albumArt = audioInfo != null ? audioInfo.getSmallCover() : null; if (albumArt != null) { notification.contentView.setImageViewBitmap(R.id.player_album_art, albumArt); if (supportBigNotifications) { notification.bigContentView.setImageViewBitmap(R.id.player_album_art, albumArt); } } else { notification.contentView.setImageViewResource(R.id.player_album_art, R.drawable.nocover_small); if (supportBigNotifications) { notification.bigContentView.setImageViewResource(R.id.player_album_art, R.drawable.nocover_big); } } if (MediaController.getInstance().isDownloadingCurrentMessage()) { notification.contentView.setViewVisibility(R.id.player_pause, View.GONE); notification.contentView.setViewVisibility(R.id.player_play, View.GONE); notification.contentView.setViewVisibility(R.id.player_next, View.GONE); notification.contentView.setViewVisibility(R.id.player_previous, View.GONE); notification.contentView.setViewVisibility(R.id.player_progress_bar, View.VISIBLE); if (supportBigNotifications) { notification.bigContentView.setViewVisibility(R.id.player_pause, View.GONE); notification.bigContentView.setViewVisibility(R.id.player_play, View.GONE); notification.bigContentView.setViewVisibility(R.id.player_next, View.GONE); notification.bigContentView.setViewVisibility(R.id.player_previous, View.GONE); notification.bigContentView.setViewVisibility(R.id.player_progress_bar, View.VISIBLE); } } else { notification.contentView.setViewVisibility(R.id.player_progress_bar, View.GONE); notification.contentView.setViewVisibility(R.id.player_next, View.VISIBLE); notification.contentView.setViewVisibility(R.id.player_previous, View.VISIBLE); if (supportBigNotifications) { notification.bigContentView.setViewVisibility(R.id.player_next, View.VISIBLE); notification.bigContentView.setViewVisibility(R.id.player_previous, View.VISIBLE); notification.bigContentView.setViewVisibility(R.id.player_progress_bar, View.GONE); } if (MediaController.getInstance().isAudioPaused()) { notification.contentView.setViewVisibility(R.id.player_pause, View.GONE); notification.contentView.setViewVisibility(R.id.player_play, View.VISIBLE); if (supportBigNotifications) { notification.bigContentView.setViewVisibility(R.id.player_pause, View.GONE); notification.bigContentView.setViewVisibility(R.id.player_play, View.VISIBLE); } } else { notification.contentView.setViewVisibility(R.id.player_pause, View.VISIBLE); notification.contentView.setViewVisibility(R.id.player_play, View.GONE); if (supportBigNotifications) { notification.bigContentView.setViewVisibility(R.id.player_pause, View.VISIBLE); notification.bigContentView.setViewVisibility(R.id.player_play, View.GONE); } } } notification.contentView.setTextViewText(R.id.player_song_name, songName); notification.contentView.setTextViewText(R.id.player_author_name, authorName); if (supportBigNotifications) { notification.bigContentView.setTextViewText(R.id.player_song_name, songName); notification.bigContentView.setTextViewText(R.id.player_author_name, authorName); } notification.flags |= Notification.FLAG_ONGOING_EVENT; startForeground(5, notification); if (remoteControlClient != null) { RemoteControlClient.MetadataEditor metadataEditor = remoteControlClient.editMetadata(true); metadataEditor.putString(MediaMetadataRetriever.METADATA_KEY_ARTIST, authorName); metadataEditor.putString(MediaMetadataRetriever.METADATA_KEY_TITLE, songName); if (audioInfo != null && audioInfo.getCover() != null) { metadataEditor.putBitmap(RemoteControlClient.MetadataEditor.BITMAP_KEY_ARTWORK, audioInfo.getCover()); } metadataEditor.apply(); audioManager.requestAudioFocus(this, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN); } } public void setListeners(RemoteViews view) { PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, new Intent(NOTIFY_PREVIOUS), PendingIntent.FLAG_UPDATE_CURRENT); view.setOnClickPendingIntent(R.id.player_previous, pendingIntent); pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, new Intent(NOTIFY_CLOSE), PendingIntent.FLAG_UPDATE_CURRENT); view.setOnClickPendingIntent(R.id.player_close, pendingIntent); pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, new Intent(NOTIFY_PAUSE), PendingIntent.FLAG_UPDATE_CURRENT); view.setOnClickPendingIntent(R.id.player_pause, pendingIntent); pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, new Intent(NOTIFY_NEXT), PendingIntent.FLAG_UPDATE_CURRENT); view.setOnClickPendingIntent(R.id.player_next, pendingIntent); pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, new Intent(NOTIFY_PLAY), PendingIntent.FLAG_UPDATE_CURRENT); view.setOnClickPendingIntent(R.id.player_play, pendingIntent); } @SuppressLint("NewApi") @Override public void onDestroy() { super.onDestroy(); if (remoteControlClient != null) { RemoteControlClient.MetadataEditor metadataEditor = remoteControlClient.editMetadata(true); metadataEditor.clear(); metadataEditor.apply(); audioManager.unregisterRemoteControlClient(remoteControlClient); audioManager.abandonAudioFocus(this); } try { TelephonyManager mgr = (TelephonyManager) getSystemService(TELEPHONY_SERVICE); if (mgr != null) { mgr.listen(phoneStateListener, PhoneStateListener.LISTEN_NONE); } } catch (Exception e) { FileLog.e("tmessages", e); } NotificationCenter.getInstance().removeObserver(this, NotificationCenter.audioProgressDidChanged); NotificationCenter.getInstance().removeObserver(this, NotificationCenter.audioPlayStateChanged); } @Override public void onAudioFocusChange(int focusChange) { if (ignoreAudioFocus) { ignoreAudioFocus = false; return; } if (focusChange == AudioManager.AUDIOFOCUS_LOSS) { if (MediaController.getInstance() .isPlayingAudio(MediaController.getInstance().getPlayingMessageObject()) && !MediaController.getInstance().isAudioPaused()) { MediaController.getInstance().pauseAudio(MediaController.getInstance().getPlayingMessageObject()); } } else if (focusChange == AudioManager.AUDIOFOCUS_GAIN) { //MediaController.getInstance().playAudio(MediaController.getInstance().getPlayingMessageObject()); } } @Override public void didReceivedNotification(int id, Object... args) { if (id == NotificationCenter.audioPlayStateChanged) { MessageObject messageObject = MediaController.getInstance().getPlayingMessageObject(); if (messageObject != null) { createNotification(messageObject); } else { stopSelf(); } } } public static void setIgnoreAudioFocus() { ignoreAudioFocus = true; } }