Android通过摇晃手机的频率来控制声音的频率(6)

 49             }
 50             playing = true;
 51         }
 52     }
 53
 54     // added for v 1.0.1, enable changing the audio remotely
 55     public void setPlayIndex(int index) {
 56         mPlayIndex = index;
 57     }
 58
 59     public void setRate(float rate) {
 60         if (mSoundEnable) {
 61             mRate = checkRate(rate);
 62             mSoundPool.setRate(mStreamID, mRate);
 63         }
 64     }
 65
 66     private float checkRate(float rate) {
 67         if (rate > 2f) {
 68             return 2f;
 69         } else if (rate < 0.5f) {
 70             return 0.5f;
 71         } else {
 72             return rate;
 73         }
 74     }
 75
 76     public void stepRate(float step) {
 77         if (mSoundEnable) {
 78             mRate = mRate + step;
 79             mRate = checkRate(mRate);
 80             mSoundPool.setRate(mStreamID, mRate);
 81         }
 82     }
 83
 84     public void pause() {
 85         if (mSoundEnable) {
 86             mSoundPool.pause(mStreamID);
 87             // mSoundPool.autoPause();
 88         }
 89     }
 90
 91     public void resume() {