android.media.SoundPool#play ( )源码实例Demo

private void shake() {
    SoundPool soundPool = new SoundPool(1, AudioManager.STREAM_SYSTEM, 5);
    int weiChatAudio = soundPool.load(CodeGenerateActivity.this, R.raw.weichat_audio, 1);
    Vibrator vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE);
    //发出提示音
    soundPool.play(weiChatAudio, 1, 1, 0, 0, 1);
    vibrator.vibrate(300);
    generateGroup();
    isShaking = true;
    try {
        Thread.sleep(100);
        isShaking = false;
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
}
 

/**
 * To play sound.
 * 
 * @param context
 * 					{@link Context}
 * 
 * @param soundID
 * 					sound id.
 * 	
 * @param soundPool
 * 					{@link SoundPool} instance.
 * 
 */
public void playSound(Context context, int soundID, SoundPool soundPool){
	OnAudioFocusChangeListener afChangeListener = new OnAudioFocusChangeListener() {
		public void onAudioFocusChange(int focusChange) {
			if (focusChange == AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK){
				// Lower the volume
			} else if (focusChange == AudioManager.AUDIOFOCUS_GAIN) {
				// Raise it back to normal
			}
		}
	};
	AudioManager audioManager = (AudioManager)context.getSystemService(Context.AUDIO_SERVICE);

	// Request audio focus for playback
	int result = audioManager.requestAudioFocus(afChangeListener,
			// Use the music stream.
			AudioManager.STREAM_MUSIC,
			// Request permanent focus.
			AudioManager.AUDIOFOCUS_GAIN);

	if (result == AudioManager.AUDIOFOCUS_REQUEST_GRANTED) {
		// Start playback.
		soundPool.play(soundID, 10, 10, 1, 0,1f );
	}
}
 

@Override
public void onLoadComplete(SoundPool soundPool, int sampleId, int status) {
    AudioNode src = mapLoadingAudioNodes.get(sampleId);
    if (src.getAudioData() instanceof AndroidAudioData) {
        AndroidAudioData audioData = (AndroidAudioData) src.getAudioData();

        if (status == 0) // load was successfull
        {
            int channelIndex;
            channelIndex = soundPool.play(audioData.getId(), 1f, 1f, 1, -1, 1f);
            src.setChannel(channelIndex);
            // Playing started ?
            if (src.getChannel() > 0) {
                src.setStatus(Status.Playing);
            }
        } else {
            src.setChannel(-1);
        }
    } else {
        throw new IllegalArgumentException("AudioData is not of type AndroidAudioData for AudioNode " + src.toString());
    }
}
 

private void doAlarm() {
	if (mCurrMInfo.isVibrate()){
		mVibrator.vibrate(1000);
	}
	if (mCurrMInfo.isRing()){
		SoundPool soundPool = new SoundPool(2, AudioManager.STREAM_SYSTEM, 5);
		soundPool.load(this, R.raw.ticket_alarm, 1);
		soundPool.play(1, 1, 1, 0, 0, 1);
	}
}
 

public void doAudioAlert(Context context) {
  // Use a throttler to keep this from interrupting itself too much.
  if (SystemClock.elapsedRealtime() - lastAudioMs < THROTTLE_LIMIT_MS) {
    return;
  }
  SoundPool soundPool = getSoundPool(context);
  if (soundId != -1) {
    lastAudioMs = SystemClock.elapsedRealtime();
    soundPool.play(soundId, .8f, .8f, 0, 0, 1.0f);
  }
}
 

public void onLoadComplete(SoundPool soundPool, int sampleId, int status) {
	soundPool.play(sampleId, 0.99f, 0.99f, 1, 0, 1);
}