private bool InitPlayerStates(string mediaId)
{
Logger.Debug("GetAudioFocus");
_playOnFocusGain = true;
if (_audioFocusState != AudioFocusState.Focused)
{
var result = _audioManager.RequestAudioFocus(this, Android.Media.Stream.Music,
AudioFocus.Gain);
if (result == AudioFocusRequest.Granted)
{
_audioFocusState = AudioFocusState.Focused;
}
}
bool mediaHasChanged = mediaId != _currentMediaId;
if (mediaHasChanged)
{
_currentPosition = 0;
_currentMediaId = mediaId;
}
return(mediaHasChanged);
}
private void GiveUpAudioFocus()
{
Logger.Debug("GiveUpAudioFocus");
if (_audioFocusState == AudioFocusState.Focused)
{
if (_audioManager.AbandonAudioFocus(this) == AudioFocusRequest.Granted)
{
_audioFocusState = AudioFocusState.NoFocusAndNoHide;
}
}
}
public void OnAudioFocusChange(AudioFocus focusChange)
{
Logger.Debug($"OnAudioFocusChange. focusChange={focusChange}");
if (focusChange == AudioFocus.Gain)
{
_audioFocusState = AudioFocusState.Focused;
}
else if (focusChange == AudioFocus.Loss ||
focusChange == AudioFocus.LossTransient ||
focusChange == AudioFocus.LossTransientCanDuck)
{
bool canDuck = focusChange == AudioFocus.LossTransientCanDuck;
_audioFocusState = canDuck ? AudioFocusState.NoFocusAndCanHide : AudioFocusState.NoFocusAndNoHide;
_playOnFocusGain |= MusicPlayerState == PlaybackStateCode.Playing && !canDuck;
}
ConfigMediaPlayerState();
}
public MusicPlayer(MusicService service, MusicProvider musicProvider)
{
MusicPlayerState = PlaybackStateCode.None;
_audioFocusState = AudioFocusState.NoFocusAndNoHide;
_musicService = service;
_musicProvider = musicProvider;
_audioManager = (AudioManager)service.GetSystemService(Context.AudioService);
_wifiLock = ((WifiManager)service.GetSystemService(Context.WifiService))
.CreateWifiLock(WifiMode.Full, "mywifilock");
if (_mediaPlayer == null)
{
_mediaPlayer = new MediaPlayer();
_mediaPlayer.SetWakeMode(_musicService.ApplicationContext,
Android.OS.WakeLockFlags.Partial);
_mediaPlayer.SetOnPreparedListener(this);
_mediaPlayer.SetOnCompletionListener(this);
_mediaPlayer.SetOnErrorListener(this);
_mediaPlayer.SetOnSeekCompleteListener(this);
}
}
