Android 播放声音

public static void PlayAlarmRing(Context mContext) {
Uri alert = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_RINGTONE);
try {
MediaPlayer mMediaPlayer = new MediaPlayer();
mMediaPlayer.setDataSource(mContext, alert);
final AudioManager audioManager = (AudioManager) mContext
.getSystemService(Context.AUDIO_SERVICE);
if (audioManager.getStreamVolume(AudioManager.STREAM_ALARM) != 0) {
mMediaPlayer.setAudioStreamType(AudioManager.STREAM_ALARM);
mMediaPlayer.setLooping(false);
mMediaPlayer.prepare();
mMediaPlayer.start();
}
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}