我希望振动和下面代码中的GIF视图与用户摇动手机的持续时间相同。一旦用户停止摇动他们的电话，我想去另一个活动。这是我的代码（包括评论）： {
private SensorManager shakeEvent;
private float acelVal;
private float acelLast;
private float shake;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Fresco.initialize(this);
setContentView(R.layout.activity_animation);
shakeEvent = (SensorManager)getSystemService(Context.SENSOR_SERVICE);
shakeEvent.registerListener(sensorListener, shakeEvent.getDefaultSensor
(Sensor.TYPE_ACCELEROMETER), SensorManager.SENSOR_DELAY_NORMAL);
acelVal = SensorManager.GRAVITY_EARTH;
acelLast = SensorManager.GRAVITY_EARTH;
shake = 0.00f;
}
private final SensorEventListener sensorListener = new SensorEventListener() {
@Override
public void onSensorChanged(SensorEvent sensorEvent) {
float x = sensorEvent.values[0];
float y = sensorEvent.values[1];
float z = sensorEvent.values[2];
acelLast = acelVal;
acelVal = (float)Math.sqrt((double)(x*x + y*y + z*z));
float delta = acelVal - acelLast;
shake = shake * 0.9f + delta;
这是用户摇动手机时执行的代码：
if (shake > 12){
SimpleDraweeView gifAnimation = (SimpleDraweeView) findViewById(R.id.gifAnimation);
DraweeController controller = Fresco.newDraweeControllerBuilder()
.setUri("http://i.imgur.com/XHpujBO.gif")
.setAutoPlayAnimations(true)
.build();
gifAnimation.setController(controller);
//I want this GIF to last as long as the user shakes their phone
Vibrator vibrator = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
vibrator.vibrate(2000); //Want to change duration to be the same as the shaking
//I want this code to be executed once the shaking stops
/*Intent intent = new Intent(getApplicationContext(),MainActivity.class);
startActivityForResult(intent,0);*/
}
}
@Override
public void onAccuracyChanged(Sensor sensor, int i) {
}
};
}