Example usage for android.content Intent ACTION_MEDIA_BUTTON

Introduction

In this page you can find the example usage for android.content Intent ACTION_MEDIA_BUTTON.

Prototype

String ACTION_MEDIA_BUTTON

To view the source code for android.content Intent ACTION_MEDIA_BUTTON.

Click Source Link

Document

Broadcast Action: The "Media Button" was pressed.

Usage

From source file:com.example.android.mediarouter.player.MainActivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
    // Be sure to call the super class.
    super.onCreate(savedInstanceState);
    if (savedInstanceState != null) {
        mPlayer = (Player) savedInstanceState.getSerializable("mPlayer");
    }//www  .  ja  va 2  s  . co m

    // Get the media router service.
    mMediaRouter = MediaRouter.getInstance(this);

    // Create a route selector for the type of routes that we care about.
    mSelector = new MediaRouteSelector.Builder().addControlCategory(MediaControlIntent.CATEGORY_LIVE_AUDIO)
            .addControlCategory(MediaControlIntent.CATEGORY_LIVE_VIDEO)
            .addControlCategory(MediaControlIntent.CATEGORY_REMOTE_PLAYBACK)
            .addControlCategory(SampleMediaRouteProvider.CATEGORY_SAMPLE_ROUTE).build();

    // Add a fragment to take care of media route discovery.
    // This fragment automatically adds or removes a callback whenever the activity
    // is started or stopped.
    FragmentManager fm = getSupportFragmentManager();
    DiscoveryFragment fragment = (DiscoveryFragment) fm.findFragmentByTag(DISCOVERY_FRAGMENT_TAG);
    if (fragment == null) {
        fragment = new DiscoveryFragment(mMediaRouterCB);
        fragment.setRouteSelector(mSelector);
        fm.beginTransaction().add(fragment, DISCOVERY_FRAGMENT_TAG).commit();
    } else {
        fragment.setCallback(mMediaRouterCB);
        fragment.setRouteSelector(mSelector);
    }

    // Populate an array adapter with streaming media items.
    String[] mediaNames = getResources().getStringArray(R.array.media_names);
    String[] mediaUris = getResources().getStringArray(R.array.media_uris);
    mLibraryItems = new LibraryAdapter();
    for (int i = 0; i < mediaNames.length; i++) {
        mLibraryItems.add(new MediaItem("[streaming] " + mediaNames[i], Uri.parse(mediaUris[i]), "video/mp4"));
    }

    // Scan local external storage directory for media files.
    File externalDir = Environment.getExternalStorageDirectory();
    if (externalDir != null) {
        File list[] = externalDir.listFiles();
        if (list != null) {
            for (int i = 0; i < list.length; i++) {
                String filename = list[i].getName();
                if (filename.matches(".*\\.(m4v|mp4)")) {
                    mLibraryItems.add(new MediaItem("[local] " + filename, Uri.fromFile(list[i]), "video/mp4"));
                }
            }
        }
    }

    mPlayListItems = new PlaylistAdapter();

    // Initialize the layout.
    setContentView(R.layout.sample_media_router);

    TabHost tabHost = (TabHost) findViewById(R.id.tabHost);
    tabHost.setup();
    String tabName = getResources().getString(R.string.library_tab_text);
    TabSpec spec1 = tabHost.newTabSpec(tabName);
    spec1.setContent(R.id.tab1);
    spec1.setIndicator(tabName);

    tabName = getResources().getString(R.string.playlist_tab_text);
    TabSpec spec2 = tabHost.newTabSpec(tabName);
    spec2.setIndicator(tabName);
    spec2.setContent(R.id.tab2);

    tabName = getResources().getString(R.string.statistics_tab_text);
    TabSpec spec3 = tabHost.newTabSpec(tabName);
    spec3.setIndicator(tabName);
    spec3.setContent(R.id.tab3);

    tabHost.addTab(spec1);
    tabHost.addTab(spec2);
    tabHost.addTab(spec3);
    tabHost.setOnTabChangedListener(new OnTabChangeListener() {
        @Override
        public void onTabChanged(String arg0) {
            updateUi();
        }
    });

    mLibraryView = (ListView) findViewById(R.id.media);
    mLibraryView.setAdapter(mLibraryItems);
    mLibraryView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
    mLibraryView.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            updateButtons();
        }
    });

    mPlayListView = (ListView) findViewById(R.id.playlist);
    mPlayListView.setAdapter(mPlayListItems);
    mPlayListView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
    mPlayListView.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            updateButtons();
        }
    });

    mInfoTextView = (TextView) findViewById(R.id.info);

    mPauseResumeButton = (ImageButton) findViewById(R.id.pause_resume_button);
    mPauseResumeButton.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            mPaused = !mPaused;
            if (mPaused) {
                mSessionManager.pause();
            } else {
                mSessionManager.resume();
            }
        }
    });

    mStopButton = (ImageButton) findViewById(R.id.stop_button);
    mStopButton.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            mPaused = false;
            mSessionManager.stop();
        }
    });

    mSeekBar = (SeekBar) findViewById(R.id.seekbar);
    mSeekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            PlaylistItem item = getCheckedPlaylistItem();
            if (fromUser && item != null && item.getDuration() > 0) {
                long pos = progress * item.getDuration() / 100;
                mSessionManager.seek(item.getItemId(), pos);
                item.setPosition(pos);
                item.setTimestamp(SystemClock.elapsedRealtime());
            }
        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {
            mSeeking = true;
        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
            mSeeking = false;
            updateUi();
        }
    });

    // Schedule Ui update
    mHandler.postDelayed(mUpdateSeekRunnable, 1000);

    // Build the PendingIntent for the remote control client
    mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
    mEventReceiver = new ComponentName(getPackageName(), SampleMediaButtonReceiver.class.getName());
    Intent mediaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);
    mediaButtonIntent.setComponent(mEventReceiver);
    mMediaPendingIntent = PendingIntent.getBroadcast(this, 0, mediaButtonIntent, 0);

    // Create and register the remote control client
    registerRemoteControlClient();

    // Set up playback manager and player
    mPlayer = Player.create(MainActivity.this, mMediaRouter.getSelectedRoute());
    mSessionManager.setPlayer(mPlayer);
    mSessionManager.setCallback(new SessionManager.Callback() {
        @Override
        public void onStatusChanged() {
            updateUi();
        }

        @Override
        public void onItemChanged(PlaylistItem item) {
        }
    });

    updateUi();
}

---

From source file:com.example.android.mediarouter.player.RadioActivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
    // Be sure to call the super class.
    super.onCreate(savedInstanceState);
    if (savedInstanceState != null) {
        mPlayer = (RadioPlayer) savedInstanceState.getSerializable("mPlayer");
    }//from  w w w.j  a va  2 s. co  m

    // Get the media router service.
    mMediaRouter = MediaRouter.getInstance(this);

    // Create a route selector for the type of routes that we care about.
    mSelector = new MediaRouteSelector.Builder().addControlCategory(MediaControlIntent.CATEGORY_LIVE_AUDIO)
            .addControlCategory(MediaControlIntent.CATEGORY_LIVE_VIDEO)
            .addControlCategory(MediaControlIntent.CATEGORY_REMOTE_PLAYBACK)
            .addControlCategory(SampleMediaRouteProvider.CATEGORY_SAMPLE_ROUTE).build();

    // Add a fragment to take care of media route discovery.
    // This fragment automatically adds or removes a callback whenever the activity
    // is started or stopped.
    FragmentManager fm = getSupportFragmentManager();
    DiscoveryFragment fragment = (DiscoveryFragment) fm.findFragmentByTag(DISCOVERY_FRAGMENT_TAG);
    if (fragment == null) {
        fragment = new DiscoveryFragment(mMediaRouterCB);
        fragment.setRouteSelector(mSelector);
        fm.beginTransaction().add(fragment, DISCOVERY_FRAGMENT_TAG).commit();
    } else {
        fragment.setCallback(mMediaRouterCB);
        fragment.setRouteSelector(mSelector);
    }

    // Populate an array adapter with streaming media items.
    String[] mediaNames = getResources().getStringArray(R.array.media_names);
    String[] mediaUris = getResources().getStringArray(R.array.media_uris);
    mLibraryItems = new LibraryAdapter();
    for (int i = 0; i < mediaNames.length; i++) {
        mLibraryItems.add(new MediaItem("[streaming] " + mediaNames[i], Uri.parse(mediaUris[i]), "video/mp4"));
    }

    // Scan local external storage directory for media files.
    File externalDir = Environment.getExternalStorageDirectory();
    if (externalDir != null) {
        File list[] = externalDir.listFiles();
        if (list != null) {
            for (int i = 0; i < list.length; i++) {
                String filename = list[i].getName();
                if (filename.matches(".*\\.(m4v|mp4)")) {
                    mLibraryItems.add(new MediaItem("[local] " + filename, Uri.fromFile(list[i]), "video/mp4"));
                }
            }
        }
    }

    mPlayListItems = new PlaylistAdapter();

    // Initialize the layout.
    setContentView(R.layout.sample_radio_router);

    TabHost tabHost = (TabHost) findViewById(R.id.tabHost);
    tabHost.setup();
    String tabName = getResources().getString(R.string.library_tab_text);
    TabSpec spec1 = tabHost.newTabSpec(tabName);
    spec1.setContent(R.id.tab1);
    spec1.setIndicator(tabName);

    tabName = getResources().getString(R.string.playlist_tab_text);
    TabSpec spec2 = tabHost.newTabSpec(tabName);
    spec2.setIndicator(tabName);
    spec2.setContent(R.id.tab2);

    tabName = getResources().getString(R.string.statistics_tab_text);
    TabSpec spec3 = tabHost.newTabSpec(tabName);
    spec3.setIndicator(tabName);
    spec3.setContent(R.id.tab3);

    tabHost.addTab(spec1);
    tabHost.addTab(spec2);
    tabHost.addTab(spec3);
    tabHost.setOnTabChangedListener(new OnTabChangeListener() {
        @Override
        public void onTabChanged(String arg0) {
            updateUi();
        }
    });

    mLibraryView = (ListView) findViewById(R.id.media);
    mLibraryView.setAdapter(mLibraryItems);
    mLibraryView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
    mLibraryView.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            updateButtons();
        }
    });

    mPlayListView = (ListView) findViewById(R.id.playlist);
    mPlayListView.setAdapter(mPlayListItems);
    mPlayListView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
    mPlayListView.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            updateButtons();
        }
    });

    mInfoTextView = (TextView) findViewById(R.id.info);

    mPauseResumeButton = (ImageButton) findViewById(R.id.pause_resume_button);
    mPauseResumeButton.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            mPaused = !mPaused;
            if (mPaused) {
                mSessionManager.pause();
            } else {
                mSessionManager.resume();
            }
        }
    });

    mStopButton = (ImageButton) findViewById(R.id.stop_button);
    mStopButton.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            mPaused = false;
            mSessionManager.stop();
        }
    });

    mSeekBar = (SeekBar) findViewById(R.id.seekbar);
    mSeekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            PlaylistItem item = getCheckedPlaylistItem();
            if (fromUser && item != null && item.getDuration() > 0) {
                long pos = progress * item.getDuration() / 100;
                mSessionManager.seek(item.getItemId(), pos);
                item.setPosition(pos);
                item.setTimestamp(SystemClock.elapsedRealtime());
            }
        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {
            mSeeking = true;
        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
            mSeeking = false;
            updateUi();
        }
    });

    // Schedule Ui update
    mHandler.postDelayed(mUpdateSeekRunnable, 1000);

    // Build the PendingIntent for the remote control client
    mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
    mEventReceiver = new ComponentName(getPackageName(), SampleMediaButtonReceiver.class.getName());
    Intent mediaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);
    mediaButtonIntent.setComponent(mEventReceiver);
    mMediaPendingIntent = PendingIntent.getBroadcast(this, 0, mediaButtonIntent, 0);

    // Create and register the remote control client
    registerRemoteControlClient();

    // Set up playback manager and player
    mPlayer = RadioPlayer.create(RadioActivity.this, mMediaRouter.getSelectedRoute());
    mSessionManager.setPlayer(mPlayer);
    mSessionManager.setCallback(new RadioSessionManager.Callback() {
        @Override
        public void onStatusChanged() {
            updateUi();
        }

        @Override
        public void onItemChanged(PlaylistItem item) {
        }
    });

    updateUi();
}

---

From source file:br.com.viniciuscr.notification2android.mediaPlayer.MediaPlaybackService.java

@Override
public void onCreate() {
    super.onCreate();

    mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
    ComponentName rec = new ComponentName(getPackageName(), MediaButtonIntentReceiver.class.getName());
    mAudioManager.registerMediaButtonEventReceiver(rec);

    Intent i = new Intent(Intent.ACTION_MEDIA_BUTTON);
    i.setComponent(rec);/*from w w w  .  j a v  a  2  s  .c  o m*/
    PendingIntent pi = PendingIntent.getBroadcast(this /*context*/, 0 /*requestCode, ignored*/, i /*intent*/,
            0 /*flags*/);
    mRemoteControlClient = new RemoteControlClient(pi);
    mAudioManager.registerRemoteControlClient(mRemoteControlClient);

    int flags = RemoteControlClient.FLAG_KEY_MEDIA_PREVIOUS | RemoteControlClient.FLAG_KEY_MEDIA_NEXT
            | RemoteControlClient.FLAG_KEY_MEDIA_PLAY | RemoteControlClient.FLAG_KEY_MEDIA_PAUSE
            | RemoteControlClient.FLAG_KEY_MEDIA_PLAY_PAUSE | RemoteControlClient.FLAG_KEY_MEDIA_STOP;
    mRemoteControlClient.setTransportControlFlags(flags);

    mPreferences = getSharedPreferences("Music", MODE_WORLD_READABLE | MODE_WORLD_WRITEABLE);
    mCardId = MusicUtils.getCardId(this);

    registerExternalStorageListener();

    // Needs to be done in this thread, since otherwise ApplicationContext.getPowerManager() crashes.
    mPlayer = new MultiPlayer();
    mPlayer.setHandler(mMediaplayerHandler);

    reloadQueue();
    notifyChange(QUEUE_CHANGED);
    notifyChange(META_CHANGED);

    IntentFilter commandFilter = new IntentFilter();
    commandFilter.addAction(SERVICECMD);
    commandFilter.addAction(TOGGLEPAUSE_ACTION);
    commandFilter.addAction(PAUSE_ACTION);
    commandFilter.addAction(NEXT_ACTION);
    commandFilter.addAction(PREVIOUS_ACTION);
    registerReceiver(mIntentReceiver, commandFilter);

    PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
    mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, this.getClass().getName());
    mWakeLock.setReferenceCounted(false);

    // If the service was idle, but got killed before it stopped itself, the
    // system will relaunch it. Make sure it gets stopped again in that case.
    Message msg = mDelayedStopHandler.obtainMessage();
    mDelayedStopHandler.sendMessageDelayed(msg, IDLE_DELAY);
}

---

From source file:be.ugent.zeus.hydra.util.audiostream.MusicService.java

/**
 * Starts playing the next song. If manualUrl is null, the next song will be randomly selected
 * from our Media Retriever (that is, it will be a random song in the user's device). If
 * manualUrl is non-null, then it specifies the URL or path to the song that will be played
 * next.// w  ww  .ja v a 2s.  c o m
 */
void playmp3(String mp3url) {
    mState = State.Stopped;
    relaxResources(false); // release everything except MediaPlayer

    try {
        // set the source of the media player to a manual URL or path
        createMediaPlayerIfNeeded();
        mPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
        mPlayer.setDataSource(mp3url);
        mIsStreaming = true;

        mSongTitle = "Urgent.fm";

        mState = State.Preparing;
        setUpAsForeground(mSongTitle + " (loading)");

        // Use the media button APIs (if available) to register ourselves for media button
        // events

        MediaButtonHelper.registerMediaButtonEventReceiverCompat(mAudioManager, mMediaButtonReceiverComponent);

        // Use the remote control APIs (if available) to set the playback state

        if (mRemoteControlClientCompat == null) {
            Intent intent = new Intent(Intent.ACTION_MEDIA_BUTTON);
            intent.setComponent(mMediaButtonReceiverComponent);
            mRemoteControlClientCompat = new RemoteControlClientCompat(PendingIntent.getBroadcast(
                    this /*context*/, 0 /*requestCode, ignored*/, intent /*intent*/, 0 /*flags*/));
            RemoteControlHelper.registerRemoteControlClient(mAudioManager, mRemoteControlClientCompat);
        }

        mRemoteControlClientCompat.setPlaybackState(RemoteControlClient.PLAYSTATE_PLAYING);

        mRemoteControlClientCompat.setTransportControlFlags(RemoteControlClient.FLAG_KEY_MEDIA_PLAY
                | RemoteControlClient.FLAG_KEY_MEDIA_PAUSE | RemoteControlClient.FLAG_KEY_MEDIA_STOP);

        // Update the remote controls
        mRemoteControlClientCompat.editMetadata(true)
                .putString(MediaMetadataRetriever.METADATA_KEY_TITLE, "Urgent.fm")
                .putBitmap(RemoteControlClientCompat.MetadataEditorCompat.METADATA_KEY_ARTWORK, mDummyAlbumArt)
                .apply();

        // starts preparing the media player in the background. When it's done, it will call
        // our OnPreparedListener (that is, the onPrepared() method on this class, since we set
        // the listener to 'this').
        //
        // Until the media player is prepared, we *cannot* call start() on it!
        mPlayer.prepareAsync();

        // If we are streaming from the internet, we want to hold a Wifi lock, which prevents
        // the Wifi radio from going to sleep while the song is playing. If, on the other hand,
        // we are *not* streaming, we want to release the lock if we were holding it before.
        if (mIsStreaming) {
            mWifiLock.acquire();
        } else if (mWifiLock.isHeld()) {
            mWifiLock.release();
        }
    } catch (IOException ex) {
        Log.e("MusicService", "IOException playing next song: " + ex.getMessage());
        ex.printStackTrace();
    }
}

---

From source file:de.qspool.clementineremote.backend.ClementinePlayerConnection.java

/**
 * Register the RemoteControlClient/*from   ww  w.  ja va 2s .c  o  m*/
 */
private void registerRemoteControlClient() {
    // Request AudioFocus, so the widget is shown on the lock-screen
    mAudioManager.requestAudioFocus(mOnAudioFocusChangeListener, AudioManager.STREAM_MUSIC,
            AudioManager.AUDIOFOCUS_GAIN);

    mAudioManager.registerMediaButtonEventReceiver(mClementineMediaButtonEventReceiver);

    // Create the intent
    Intent mediaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);
    mediaButtonIntent.setComponent(mClementineMediaButtonEventReceiver);
    PendingIntent mediaPendingIntent = PendingIntent.getBroadcast(App.mApp.getApplicationContext(), 0,
            mediaButtonIntent, 0);
    // Create the client
    mRcClient = new RemoteControlClient(mediaPendingIntent);
    if (App.mClementine.getState() == Clementine.State.PLAY) {
        mRcClient.setPlaybackState(RemoteControlClient.PLAYSTATE_PLAYING);
    } else {
        mRcClient.setPlaybackState(RemoteControlClient.PLAYSTATE_PAUSED);
    }
    mRcClient.setTransportControlFlags(
            RemoteControlClient.FLAG_KEY_MEDIA_NEXT | RemoteControlClient.FLAG_KEY_MEDIA_PREVIOUS
                    | RemoteControlClient.FLAG_KEY_MEDIA_PLAY | RemoteControlClient.FLAG_KEY_MEDIA_PAUSE);
    mAudioManager.registerRemoteControlClient(mRcClient);
}

---

From source file:com.koma.music.service.MusicService.java

private void setUpMediaSession() {
    mSession = new MediaSession(this, "KomaMusic");
    mSession.setCallback(new MediaSession.Callback() {
        @Override/*from w w w .j a  v a2s  .  c  o  m*/
        public void onPause() {
            pause();
            mPausedByTransientLossOfFocus = false;
        }

        @Override
        public void onPlay() {
            play();
        }

        @Override
        public void onSeekTo(long pos) {
            seek(pos);
        }

        @Override
        public void onSkipToNext() {
            gotoNext(true);
        }

        @Override
        public void onSkipToPrevious() {
            prev(false);
        }

        @Override
        public void onStop() {
            pause();
            mPausedByTransientLossOfFocus = false;
            seek(0);
            releaseServiceUiAndStop();
        }

        @Override
        public void onSkipToQueueItem(long id) {
            setQueuePosition((int) id);
        }

        @Override
        public boolean onMediaButtonEvent(@NonNull Intent mediaButtonIntent) {
            if (Intent.ACTION_MEDIA_BUTTON.equals(mediaButtonIntent.getAction())) {
                KeyEvent ke = mediaButtonIntent.getParcelableExtra(Intent.EXTRA_KEY_EVENT);
                if (ke != null && ke.getKeyCode() == KeyEvent.KEYCODE_HEADSETHOOK) {
                    if (ke.getAction() == KeyEvent.ACTION_UP) {
                        handleHeadsetHookClick(ke.getEventTime());
                    }
                    return true;
                }
            }
            return super.onMediaButtonEvent(mediaButtonIntent);
        }
    });

    PendingIntent pi = PendingIntent.getBroadcast(this, 0, new Intent(this, MediaButtonIntentReceiver.class),
            PendingIntent.FLAG_UPDATE_CURRENT);
    mSession.setMediaButtonReceiver(pi);

    mSession.setFlags(MediaSession.FLAG_HANDLES_TRANSPORT_CONTROLS | MediaSession.FLAG_HANDLES_MEDIA_BUTTONS);
}

---

From source file:com.andrew.apolloMod.service.ApolloService.java

@SuppressLint({ "WorldWriteableFiles", "WorldReadableFiles" })
@Override//  ww w  .  j a v a2 s. c o  m
public void onCreate() {
    super.onCreate();

    mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
    ComponentName rec = new ComponentName(getPackageName(), MediaButtonIntentReceiver.class.getName());
    mAudioManager.registerMediaButtonEventReceiver(rec);
    Intent mediaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);
    mediaButtonIntent.setComponent(rec);
    PendingIntent mediaPendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, mediaButtonIntent,
            PendingIntent.FLAG_UPDATE_CURRENT);

    if (Constants.isApi14Supported()) {
        mRemoteControlClient = new RemoteControlClient(mediaPendingIntent);
        mAudioManager.registerRemoteControlClient(mRemoteControlClient);

        int flags = RemoteControlClient.FLAG_KEY_MEDIA_PREVIOUS | RemoteControlClient.FLAG_KEY_MEDIA_NEXT
                | RemoteControlClient.FLAG_KEY_MEDIA_PLAY | RemoteControlClient.FLAG_KEY_MEDIA_PAUSE
                | RemoteControlClient.FLAG_KEY_MEDIA_PLAY_PAUSE | RemoteControlClient.FLAG_KEY_MEDIA_STOP;
        mRemoteControlClient.setTransportControlFlags(flags);
    }

    mPreferences = getSharedPreferences(APOLLO_PREFERENCES, MODE_WORLD_READABLE | MODE_WORLD_WRITEABLE);
    mCardId = MusicUtils.getCardId(this);

    registerExternalStorageListener();

    // Needs to be done in this thread, since otherwise
    // ApplicationContext.getPowerManager() crashes.
    mPlayer = new MultiPlayer();
    mPlayer.setHandler(mMediaplayerHandler);

    reloadQueue();
    notifyChange(QUEUE_CHANGED);
    notifyChange(META_CHANGED);

    IntentFilter commandFilter = new IntentFilter();
    commandFilter.addAction(SERVICECMD);
    commandFilter.addAction(TOGGLEPAUSE_ACTION);
    commandFilter.addAction(PAUSE_ACTION);
    commandFilter.addAction(NEXT_ACTION);
    commandFilter.addAction(PREVIOUS_ACTION);
    commandFilter.addAction(CYCLEREPEAT_ACTION);
    commandFilter.addAction(TOGGLESHUFFLE_ACTION);
    registerReceiver(mIntentReceiver, commandFilter);

    PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
    mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, this.getClass().getName());
    mWakeLock.setReferenceCounted(false);

    // If the service was idle, but got killed before it stopped itself, the
    // system will relaunch it. Make sure it gets stopped again in that
    // case.
    Message msg = mDelayedStopHandler.obtainMessage();
    mDelayedStopHandler.sendMessageDelayed(msg, IDLE_DELAY);
}

---

From source file:co.shunya.gita.player.MusicService.java

/**
 * Starts playing the next song. If manualUrl is null, the next song will be randomly selected
 * from our Media Retriever (that is, it will be a random song in the user's device). If
 * manualUrl is non-null, then it specifies the URL or path to the song that will be played
 * next.//  w w w.j av a 2s  .  co  m
 */
void playNextSong(Long id) {
    if (id == null || id < 0) {
        throw new IllegalArgumentException("id must be non nul +ve");
    }
    setState(State.Stopped);
    relaxResources(false); // release everything except MediaPlayer

    try {
        // set the source of the media player to a manual URL or path
        Track playingItem = mRetriever.getItem(id);
        createMediaPlayerIfNeeded();
        mPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);

        if (playingItem == null) {
            Toast.makeText(this, "All Tracks of current category is been played", Toast.LENGTH_LONG).show();
            processStopRequest(true); // stop everything!
            return;
        }
        //            BusProvider.getInstance().post(playingItem);
        mCurrentID = id;
        mPlayer.setDataSource(playingItem.isDownloded() ? playingItem.getLocalUrl(this) : playingItem.getUrl());
        mIsStreaming = playingItem.getUrl().startsWith("http:") || playingItem.getUrl().startsWith("https:");
        mSongTitle = playingItem.getTitle();

        setState(State.Preparing);
        updateUI();

        setUpAsForeground(mSongTitle + " (loading)");

        // Use the media button APIs (if available) to register ourselves for media button
        // events

        MediaButtonHelper.registerMediaButtonEventReceiverCompat(mAudioManager, mMediaButtonReceiverComponent);

        // Use the remote control APIs (if available) to set the playback state

        if (mRemoteControlClientCompat == null) {
            Intent intent = new Intent(Intent.ACTION_MEDIA_BUTTON);
            intent.setComponent(mMediaButtonReceiverComponent);
            mRemoteControlClientCompat = new RemoteControlClientCompat(PendingIntent.getBroadcast(
                    this /*context*/, 0 /*requestCode, ignored*/, intent /*intent*/, 0 /*flags*/));
            RemoteControlHelper.registerRemoteControlClient(mAudioManager, mRemoteControlClientCompat);
        }

        mRemoteControlClientCompat.setPlaybackState(RemoteControlClient.PLAYSTATE_PLAYING);

        mRemoteControlClientCompat.setTransportControlFlags(RemoteControlClient.FLAG_KEY_MEDIA_PLAY
                | RemoteControlClient.FLAG_KEY_MEDIA_PAUSE | RemoteControlClient.FLAG_KEY_MEDIA_NEXT
                | RemoteControlClient.FLAG_KEY_MEDIA_PREVIOUS | RemoteControlClient.FLAG_KEY_MEDIA_STOP);

        // Update the remote controls
        mRemoteControlClientCompat.editMetadata(true)
                .putString(MediaMetadataRetriever.METADATA_KEY_ALBUM, "Gita")
                .putString(MediaMetadataRetriever.METADATA_KEY_TITLE, playingItem.getTitle())
                .putBitmap(RemoteControlClientCompat.MetadataEditorCompat.METADATA_KEY_ARTWORK, mDummyAlbumArt)
                .apply();

        // starts preparing the media player in the background. When it's done, it will call
        // our OnPreparedListener (that is, the onPrepared() method on this class, since we set
        // the listener to 'this').
        //
        // Until the media player is prepared, we *cannot* call start() on it!
        mPlayer.prepareAsync();

        // If we are streaming from the internet, we want to hold a Wifi lock, which prevents
        // the Wifi radio from going to sleep while the song is playing. If, on the other hand,
        // we are *not* streaming, we want to release the lock if we were holding it before.
        if (mIsStreaming)
            mWifiLock.acquire();
        else if (mWifiLock.isHeld())
            mWifiLock.release();
    } catch (IOException ex) {
        Log.e("MusicService", "IOException playing next song: " + ex.getMessage());
        ex.printStackTrace();
    }
}

---

From source file:com.nd.android.u.square.service.MusicPlaybackService.java

/**
 * Starts playing the next song. If manualUrl is null, the next song will be randomly selected
 * from our Media Retriever (that is, it will be a random song in the user's device). If
 * manualUrl is non-null, then it specifies the URL or path to the song that will be played
 * next./*from  ww  w  .  ja v a  2 s  .co m*/
 */
void playNextSong(Item playingItem) {
    mState = State.Stopped;
    relaxResources(false); // release everything except MediaPlayer

    try {
        if (null == playingItem) {
            playingItem = pollNextSong(mPlayingItem);
            if (null == playingItem) {
                if (sOnStateChangedListener != null) {
                    sOnStateChangedListener.onPlayListIsEmpty();
                }
                return;
            }
            mPlayingItem = playingItem;

            if (null != sOnStateChangedListener)
                sOnStateChangedListener.onCurrentPlayingItemChanged(mPlayingItem);
        }

        // set the source of the media player a a content URI
        createMediaPlayerIfNeeded();
        mPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
        mPlayer.setDataSource(playingItem.getUrl());
        mIsStreaming = true;
        mSongTitle = playingItem.title;
        mState = State.Preparing;
        setUpAsForeground(mSongTitle + "");

        // Use the media button APIs (if available) to register ourselves for media button
        // events

        MediaButtonHelper.registerMediaButtonEventReceiverCompat(mAudioManager, mMediaButtonReceiverComponent);

        // Use the remote control APIs (if available) to set the playback state

        if (mRemoteControlClientCompat == null) {
            Intent intent = new Intent(Intent.ACTION_MEDIA_BUTTON);
            intent.setComponent(mMediaButtonReceiverComponent);
            mRemoteControlClientCompat = new RemoteControlClientCompat(PendingIntent
                    .getBroadcast(this /*context*/, 0 /*requestCode, ignored*/, intent /*intent*/, 0 /*flags*/
            ));
            RemoteControlHelper.registerRemoteControlClient(mAudioManager, mRemoteControlClientCompat);
        }

        mRemoteControlClientCompat.setPlaybackState(RemoteControlClient.PLAYSTATE_PLAYING);

        mRemoteControlClientCompat.setTransportControlFlags(
                RemoteControlClient.FLAG_KEY_MEDIA_PLAY | RemoteControlClient.FLAG_KEY_MEDIA_PAUSE
                        | RemoteControlClient.FLAG_KEY_MEDIA_NEXT | RemoteControlClient.FLAG_KEY_MEDIA_STOP);

        // Update the remote controls
        mRemoteControlClientCompat.editMetadata(true)
                .putString(MediaMetadataRetriever.METADATA_KEY_TITLE, playingItem.title)
                .putLong(MediaMetadataRetriever.METADATA_KEY_DURATION, playingItem.duration)
                // TODO: fetch real item artwork
                .putBitmap(RemoteControlClientCompat.MetadataEditorCompat.METADATA_KEY_ARTWORK, mDummyAlbumArt)
                .apply();

        // starts preparing the media player in the background. When it's done, it will call
        // our OnPreparedListener (that is, the onPrepared() method on this class, since we set
        // the listener to 'this').
        //
        // Until the media player is prepared, we *cannot* call start() on it!
        mPlayingItem.bufferedPercent = 0;
        mPlayer.prepareAsync();

        if (null != sOnStateChangedListener)
            sOnStateChangedListener.onPlayerPreparing(mPlayingItem);

        // If we are streaming from the internet, we want to hold a Wifi lock, which prevents
        // the Wifi radio from going to sleep while the song is playing. If, on the other hand,
        // we are *not* streaming, we want to release the lock if we were holding it before.
        if (mIsStreaming)
            mWifiLock.acquire();
        else if (mWifiLock.isHeld())
            mWifiLock.release();
    } catch (IOException ex) {
        Log.e(TAG, "IOException playing next song: " + ex.getMessage(), ex);
    }
}

---

From source file:com.andrew.apollo.MusicPlaybackService.java

/**
 * Initializes the remote control client
 *//*w ww . j a  v a  2  s  . c o m*/
private void setUpRemoteControlClient() {
    final Intent mediaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);
    mediaButtonIntent.setComponent(mMediaButtonReceiverComponent);
    mRemoteControlClient = new RemoteControlClient(PendingIntent.getBroadcast(getApplicationContext(), 0,
            mediaButtonIntent, PendingIntent.FLAG_UPDATE_CURRENT));

    try {
        if (mAudioManager != null) {
            mAudioManager.registerRemoteControlClient(mRemoteControlClient);
        }
    } catch (Throwable t) {
        // seems like this doesn't work on some devices where it requires MODIFY_PHONE_STATE
        // which is a permission only given to system apps, not third party apps.
    }

    // Flags for the media transport control that this client supports.
    int flags = RemoteControlClient.FLAG_KEY_MEDIA_PREVIOUS | RemoteControlClient.FLAG_KEY_MEDIA_NEXT
            | RemoteControlClient.FLAG_KEY_MEDIA_PLAY | RemoteControlClient.FLAG_KEY_MEDIA_PAUSE
            | RemoteControlClient.FLAG_KEY_MEDIA_PLAY_PAUSE | RemoteControlClient.FLAG_KEY_MEDIA_STOP;

    flags |= RemoteControlClient.FLAG_KEY_MEDIA_POSITION_UPDATE;
    mRemoteControlClient.setOnGetPlaybackPositionListener(this::position);
    mRemoteControlClient.setPlaybackPositionUpdateListener(this::seek);

    mRemoteControlClient.setTransportControlFlags(flags);
}

---

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