Develop Reference

Response to MediaBttuon not working when Trying to play sound over BluetoothSco

I have implemented handling MediaButton event according to developers guide Both in UI Activity and Active Media Session. When I try to play sound over bluetoothSco it starts to miss MediaButton events. this are the lines of code I added to play sound over BluetoothSCO
AudioManager localAudioManager;
localAudioManager = (AudioManager) CallFrameGUIActivity.this.getSystemService(AUDIO_SERVICE);
localAudioManager.setMode(AudioManager.MODE_IN_COMMUNICATION);
localAudioManager.setBluetoothScoOn(true);
localAudioManager.startBluetoothSco();

Because you use mode_in_communication.
localAudioManager.setMode(AudioManager.MODE_IN_COMMUNICATION)

How to check weather speaker is in use or not in android?

I am using audio manger but how to check if speaker is in use or not?
audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);

Try this:
boolean activeFlag = audioManager.isMusicActive();

Try to use the method isMusicActive() of the audio manager it returns true if any of the music is playing

Android Abandoning Audio focus

I have a video without any audio playing in my activity, so if my music player is playing and my app is opened the music stops. I was wondering if there is a way to not request the Audio focus and let the music play in the background even when my video is playing ? I have tried abandoning audio focus after starting the video but that doesn't seem to work either.
Here's the code I have tried till now -
String path = "android.resource://" + getPackageName() + "/" + R.raw.backgroundvideo;
mvvBackground.setVideoURI(Uri.parse(path));
mvvBackground.setMediaController(null);
mvvBackground.start();
AudioManager am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
am.abandonAudioFocus(new AudioManager.OnAudioFocusChangeListener() {
#Override
public void onAudioFocusChange(int focusChange) {
Log.d(LOG_TAG, "Audio focus changed!");
}
});
Any suggestions will be appreciated ! Thanks

I have not tried this, but according to the docs, for API level 26 and above you can use mVideoView.setAudioFocusRequest(AudioManager.AUDIOFOCUS_NONE) to achieve this behaviour.
For below that API level, there is a workaround mentioned here.

Do Not Disturb mode - always silent incoming calls

I have an app with an integrated music player. I don't want the music to be interrupted by incoming calls.
I use following function for that:
public static void updateDoNotDisturbMode(boolean enabled, boolean checkPrefs)
{
...
AudioManager audioManager = ((AudioManager) MainApp.get().getSystemService(Context.AUDIO_SERVICE));
NotificationManager notificationManager = (NotificationManager) MainApp.get().getSystemService(Context.NOTIFICATION_SERVICE);
// audioManager.setMode(AudioManager.MODE_IN_CALL);
if (!enabled)
{
audioManager.setStreamSolo(AudioManager.STREAM_MUSIC, false);
audioManager.setStreamMute(AudioManager.STREAM_VOICE_CALL, false);
audioManager.setStreamMute(AudioManager.STREAM_RING, false);
audioManager.setStreamMute(AudioManager.STREAM_NOTIFICATION, false);
...
}
else
{
audioManager.setStreamSolo(AudioManager.STREAM_MUSIC, true);
audioManager.setStreamMute(AudioManager.STREAM_VOICE_CALL, true);
audioManager.setStreamMute(AudioManager.STREAM_RING, true);
audioManager.setStreamMute(AudioManager.STREAM_NOTIFICATION, true);
...
}
}
what works
silent phone if no headphones are connected
internal music player does play on without interruption if someone calls
so without headphones connected, everything works perfectly fine
what does not work
if headphones are connected, the standard beep sound is interrupting my music player and is played in the headphones
How can I avoid that incoming calls are interrupting my music player even if headphones are connected?
TARGET SDK
Only 4.2 and upwarts... (including 5)

What do you mean integrated music player? Can you change code of music app?
A player stops playing because it listens to PhoneStateChanges - void onCallEvent(int state, String number);
If you can change code of the player you should check is mute mode on within this method - if yes then do not stop playback.
If you can't change the code of player - you can use advanced player with preferences of audio focus. For example poweramp has such option. Set Settings/Audio/Audio Focus/Pause in Call to false (it works, tested right now). But you should change it manually all the time.

Using MediaPlayer to play a notification beep on Google TV

I have some code that plays a small notification beep from an mp3 (included in res/raw) that works fine on regular Android devices (various 2.2 and up), which I am trying to also use on Google TV and it doesn't seem to do anything, no errors, just no sound.
What could I be doing wrong (this has to be something simple that I am missing?).
Here is the basic code I'm using:
private void beep() {
AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
int result = audioManager.requestAudioFocus(null, AudioManager.STREAM_NOTIFICATION, AudioManager.AUDIOFOCUS_GAIN);
if (result == AudioManager.AUDIOFOCUS_REQUEST_GRANTED) {
try {
Log.d(App.LOG_TAG, "playing the damn beep ****************");
MediaPlayer mediaPlayer = MediaPlayer.create(this, R.raw.beep);
// tried with and without volume
///mediaPlayer.setVolume(1.0f, 1.0f);
mediaPlayer.setLooping(false);
mediaPlayer.start();
} catch (Exception e) {
Log.e("beep", "error: " + e.getMessage(), e);
}
} else {
Log.d(App.LOG_TAG, "could not gain audio focus");
}
}
(NOTE: In real life I don't recreate the MediaPlayer and AudioManager every time, but I tried just putting everything in one method for test purposes. This works fine on the regular Android emulator, and on regular Android [phone] devices, but plays no sound on GTV emulator or Logitech Revue -- even though it does get into the MediaPlayer block fine and logs that it's playing the beep.)

Did you enable Notification sound in Settings->Picture & sound ->Notification sounds->Sounds->Default ?

I had the same problem. For whatever reason, it looks like the files need to be in ogg format. I tried .mp3, and a few versions of .wav. Even the GTV dev docs (https://developers.google.com/tv/android/docs/gtv_media_formats#StandardFormats) say .mp3 is okay.
My HiSense Pulse Google TV only plays the files if they are .ogg files.
This online converter seems to work: http://media.io/