[小代碼]播放聲音特效

使用的是 android.media.SoundPool類

public static final int SOUND_EXPLOSION = 1;

private SoundPool soundPool;
private HashMap<Integer, Integer> soundPoolMap;

private void initSounds() {
     soundPool = new SoundPool(4, AudioManager.STREAM_MUSIC, 100);
     soundPoolMap = new HashMap<Integer, Integer>();
     soundPoolMap.put(SOUND_EXPLOSION, soundPool.load(getContext(), R.raw.explosion, 1));//解碼加載explosion，爆炸音
}
/* 播放 */         
public void playSound(int sound) {
    /* 下面4句計算當前音量，範圍0.0~1.0*/
    AudioManager mgr = (AudioManager)getContext().getSystemService(Context.AUDIO_SERVICE);
    float streamVolumeCurrent = mgr.getStreamVolume(AudioManager.STREAM_MUSIC);
    float streamVolumeMax = mgr.getStreamMaxVolume(AudioManager.STREAM_MUSIC);    
    float volume = streamVolumeCurrent / streamVolumeMax;
    
    /* 其當前音量播放聲音 */
    soundPool.play(soundPoolMap.get(sound), volume, volume, 1, 0, 1f);     
}
/* 播放爆炸音效 */
public void explode() {
    playSound(SOUND_EXPLOSION);
}