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();
        }
    }