Example usage for android.media AudioManager requestAudioFocus

Introduction

In this page you can find the example usage for android.media AudioManager requestAudioFocus.

Prototype

public int requestAudioFocus(OnAudioFocusChangeListener l, int streamType, int durationHint) 

Source Link

Document

Request audio focus.

Usage

From source file:com.ecoplayer.beta.MusicService.java

private boolean initMediaPlayer() {
    startForeground(NOTIFICATION_ID, notiBuilder.getNotification());
    AudioManager audioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
    int result = audioManager.requestAudioFocus(audioFocusChangeList, AudioManager.STREAM_MUSIC,
            AudioManager.AUDIOFOCUS_GAIN);
    if (result == AudioManager.AUDIOFOCUS_REQUEST_GRANTED) {
        mMediaPlayer = new MediaPlayer(); // initialize it here
        mMediaPlayer.setOnPreparedListener(this);
        mMediaPlayer.setOnCompletionListener(onCompletion);
        mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
        // prevent CPU from going to sleep
        mMediaPlayer.setWakeMode(getApplicationContext(), PowerManager.PARTIAL_WAKE_LOCK);
        return true;
    } else {/*from w  w w.  ja  v  a 2  s  .  c  o  m*/
        Log.w(LOG_TAG, "The service hasn't got the audio focus");
    }
    return false;
}

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From source file:com.customprogrammingsolutions.MediaStreamer.MediaStreamerService.java

private boolean requestAudioFocus() {
    AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
    int result = audioManager.requestAudioFocus(this, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN);

    if (result != AudioManager.AUDIOFOCUS_REQUEST_GRANTED)
        return false;
    else//from  w w w. j  a  v a  2 s  . co m
        return true;
}

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From source file:github.daneren2005.dsub.util.Util.java

@TargetApi(8)
public static void requestAudioFocus(final Context context) {
    if (Build.VERSION.SDK_INT >= 8 && focusListener == null) {
        final AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
        audioManager.requestAudioFocus(focusListener = new OnAudioFocusChangeListener() {
            public void onAudioFocusChange(int focusChange) {
                DownloadService downloadService = (DownloadService) context;
                if ((focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT
                        || focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK)
                        && !downloadService.isRemoteEnabled()) {
                    if (downloadService.getPlayerState() == PlayerState.STARTED) {
                        Log.i(TAG, "Temporary loss of focus");
                        SharedPreferences prefs = getPreferences(context);
                        int lossPref = Integer
                                .parseInt(prefs.getString(Constants.PREFERENCES_KEY_TEMP_LOSS, "1"));
                        if (lossPref == 2 || (lossPref == 1
                                && focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK)) {
                            lowerFocus = true;
                            downloadService.setVolume(0.1f);
                        } else if (lossPref == 0
                                || (lossPref == 1 && focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT)) {
                            pauseFocus = true;
                            downloadService.pause(true);
                        }/* w ww .  j a va2 s . com*/
                    }
                } else if (focusChange == AudioManager.AUDIOFOCUS_GAIN) {
                    if (pauseFocus) {
                        pauseFocus = false;
                        downloadService.start();
                    } else if (lowerFocus) {
                        lowerFocus = false;
                        downloadService.setVolume(1.0f);
                    }
                } else if (focusChange == AudioManager.AUDIOFOCUS_LOSS && !downloadService.isRemoteEnabled()) {
                    Log.i(TAG, "Permanently lost focus");
                    focusListener = null;
                    downloadService.pause();
                    audioManager.abandonAudioFocus(this);
                }
            }
        }, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN);
    }
}

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From source file:com.thejoshwa.ultrasonic.androidapp.util.Util.java

public static void requestAudioFocus(final Context context) {
    if (!hasFocus) {
        final AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
        hasFocus = true;/*from   www.j  av a2s .  c  om*/
        audioManager.requestAudioFocus(new OnAudioFocusChangeListener() {
            public void onAudioFocusChange(int focusChange) {
                DownloadServiceImpl downloadService = (DownloadServiceImpl) context;
                if ((focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT
                        || focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK)
                        && !downloadService.isJukeboxEnabled()) {
                    if (downloadService.getPlayerState() == PlayerState.STARTED) {
                        SharedPreferences prefs = getPreferences(context);
                        int lossPref = Integer
                                .parseInt(prefs.getString(Constants.PREFERENCES_KEY_TEMP_LOSS, "1"));
                        if (lossPref == 2 || (lossPref == 1
                                && focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK)) {
                            lowerFocus = true;
                            downloadService.setVolume(0.1f);
                        } else if (lossPref == 0
                                || (lossPref == 1 && focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT)) {
                            pauseFocus = true;
                            downloadService.pause();
                        }
                    }
                } else if (focusChange == AudioManager.AUDIOFOCUS_GAIN) {
                    if (pauseFocus) {
                        pauseFocus = false;
                        downloadService.start();
                    } else if (lowerFocus) {
                        lowerFocus = false;
                        downloadService.setVolume(1.0f);
                    }
                } else if (focusChange == AudioManager.AUDIOFOCUS_LOSS && !downloadService.isJukeboxEnabled()) {
                    hasFocus = false;
                    downloadService.pause();
                    audioManager.abandonAudioFocus(this);
                }
            }
        }, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN);
    }
}

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From source file:com.evandroid.musica.MainLyricActivity.java

@SuppressLint("InlinedApi")
public void resync(MenuItem item) {
    AudioManager am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
    am.requestAudioFocus(null,
            // Use the music stream.
            AudioManager.STREAM_SYSTEM,//from ww  w . j  a v a  2s  .c  om
            // Request permanent focus.
            AudioManager.AUDIOFOCUS_GAIN_TRANSIENT);
    am.abandonAudioFocus(null);
}

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From source file:com.mylovemhz.simplay.MusicService.java

private void cueTrack() throws IOException, IndexOutOfBoundsException {
    Log.d(TAG_MUSIC_SERVICE, "Cue Track...");

    AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
    int result = audioManager.requestAudioFocus(this, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN);
    if (result != AudioManager.AUDIOFOCUS_GAIN) {
        return; //Failed to gain audio focus
    }/*from  w w w . ja  v a2s .c  om*/

    if (getCurrentState() == State.STOPPED) {
        mediaPlayer.reset();
        currentState = State.IDLE;

    }
    if (getCurrentState() == State.IDLE) {
        if (trackQueue.size() == 0) {
            return; //nothing to play
        }
        if (hasPermission(Manifest.permission.WAKE_LOCK)) {
            if (!wifiLock.isHeld()) {
                wifiLock.acquire();
            }
            Track track = trackQueue.get(currentTrackIndex);
            mediaPlayer.setDataSource(track.getUrl());
            currentState = State.INITIALIZED;
            mediaPlayer.prepareAsync();
            currentState = State.PREPARING;
            if (callbacks != null)
                callbacks.onLoading();
        } else {
            Log.e(TAG_MUSIC_SERVICE, "need permission " + Manifest.permission.WAKE_LOCK);
            if (callbacks != null) {
                callbacks.onPermissionRequired(REQUEST_PERMISSION_WAKE_LOCK, Manifest.permission.WAKE_LOCK,
                        RATIONALE_WAKE_LOCK);
            }
        }
    }
}

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From source file:github.madmarty.madsonic.util.Util.java

@TargetApi(8)
public static void requestAudioFocus(final Context context) {
    if (Build.VERSION.SDK_INT >= 8 && !hasFocus) {
        final AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
        hasFocus = true;//w w w . ja  va  2  s. co  m
        audioManager.requestAudioFocus(new OnAudioFocusChangeListener() {
            public void onAudioFocusChange(int focusChange) {
                DownloadServiceImpl downloadService = (DownloadServiceImpl) context;
                if ((focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT
                        || focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK)
                        && !downloadService.isJukeboxEnabled()) {
                    if (downloadService.getPlayerState() == PlayerState.STARTED) {
                        SharedPreferences prefs = getPreferences(context);
                        int lossPref = Integer
                                .parseInt(prefs.getString(Constants.PREFERENCES_KEY_AUDIO_FOCUS, "1"));
                        if (lossPref == 2 || (lossPref == 1
                                && focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK)) {
                            lowerFocus = true;
                            downloadService.setVolume(0.1f);
                        } else if (lossPref == 0
                                || (lossPref == 1 && focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT)) {
                            pauseFocus = true;
                            downloadService.pause();
                        }
                    }
                } else if (focusChange == AudioManager.AUDIOFOCUS_GAIN) {
                    if (pauseFocus) {
                        pauseFocus = false;
                        downloadService.start();
                    } else if (lowerFocus) {
                        lowerFocus = false;
                        downloadService.setVolume(1.0f);
                    }
                } else if (focusChange == AudioManager.AUDIOFOCUS_LOSS && !downloadService.isJukeboxEnabled()) {
                    hasFocus = false;
                    downloadService.pause();
                    audioManager.abandonAudioFocus(this);
                }
            }
        }, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN);
    }
}

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From source file:com.yohpapa.research.simplemusicplayer.PlaybackService.java

private boolean requestAudioFocus() {
    AudioManager manager = (AudioManager) getSystemService(AUDIO_SERVICE);
    int result = manager.requestAudioFocus(onAudioFocusChangeListener, AudioManager.STREAM_MUSIC,
            AudioManager.AUDIOFOCUS_GAIN);

    return result == AudioManager.AUDIOFOCUS_REQUEST_GRANTED;
}

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From source file:org.videolan.vlc.AudioService.java

@TargetApi(8)
private void changeAudioFocus(boolean gain) {
    if (!Util.isFroyoOrLater()) // NOP if not supported
        return;/*  ww w.java2 s  . c o  m*/

    audioFocusListener = new OnAudioFocusChangeListener() {
        @Override
        public void onAudioFocusChange(int focusChange) {
            if (focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK
                    || focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT) {
                /*
                 * Lower the volume to 36% to "duck" when an alert or something
                 * needs to be played.
                 */
                LibVLC.getExistingInstance().setVolume(36);
            } else {
                LibVLC.getExistingInstance().setVolume(100);
            }
        }
    };

    AudioManager am = (AudioManager) getSystemService(AUDIO_SERVICE);
    if (gain)
        am.requestAudioFocus(audioFocusListener, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN);
    else
        am.abandonAudioFocus(audioFocusListener);

}

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From source file:org.amahi.anywhere.service.AudioService.java

private void setUpAudioPlayerRemote() {
    AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
    ComponentName audioReceiver = new ComponentName(getPackageName(), AudioReceiver.class.getName());

    Intent audioIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);
    audioIntent.setComponent(audioReceiver);
    PendingIntent audioPendingIntent = PendingIntent.getBroadcast(this, 0, audioIntent, 0);

    audioPlayerRemote = new RemoteControlClient(audioPendingIntent);
    audioPlayerRemote.setTransportControlFlags(RemoteControlClient.FLAG_KEY_MEDIA_PLAY_PAUSE
            | RemoteControlClient.FLAG_KEY_MEDIA_NEXT | RemoteControlClient.FLAG_KEY_MEDIA_PREVIOUS);
    audioPlayerRemote.setPlaybackState(RemoteControlClient.PLAYSTATE_PLAYING);

    audioManager.requestAudioFocus(this, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN);
    audioManager.registerMediaButtonEventReceiver(audioReceiver);
    audioManager.registerRemoteControlClient(audioPlayerRemote);
}

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