Android通过摇晃手机的频率来控制声音的频率(5)

 20         mSoundPool = new SoundPool(4, AudioManager.STREAM_MUSIC, 0);
 21         mSoundPoolMap = new HashMap<Integer, Integer>();
 22         mAudioManager = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);
 23     }
 24
 25
 26     public void addSound(int index, String audioName) {
 27         // mSoundPoolMap.put(1, mSoundPool.load(mContext, SoundID, 1));
 28          try {
 29             mSoundPoolMap.put(index, mSoundPool.load(mContext.getAssets().openFd(audioName), 1));
 30         } catch (IOException e) {
 31             e.printStackTrace();
 32         }
 33     }
 34
 35     // loopMode=0:play once; loopMode=-1:loop mode;
 36      public void play(int index, int loopMode, float rate) {
 37         if (mSoundEnable) {
 38             this.loopMode = loopMode;
 39             mRate = checkRate(rate);
 40
 41             int streamVolume = mAudioManager.getStreamVolume(AudioManager.STREAM_MUSIC);
 42             // float streamVolume = 0.1f;
 43             // notes: for loop mode, the priority should be set to 0, else it can't be stopped
 44             // mStreamID=mSoundPool.play(mSoundPoolMap.get(index), streamVolume, streamVolume, 1, loopMode, mRate);
 45              if (mPlayIndex < 0) {
 46                 mStreamID = mSoundPool.play(mSoundPoolMap.get(index), streamVolume, streamVolume, 0, loopMode, mRate);
 47             } else {
 48                 mStreamID = mSoundPool.play(mSoundPoolMap.get(mPlayIndex), streamVolume, streamVolume, 0, loopMode, mRate);