安卓晃动手机监听--“摇一摇”

监测到晃动后震动手机，需要震动权限
package com.mapuni.ryuan.shakeshake;

import android.app.Activity;
import android.app.Service;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.Vibrator;
import android.util.Log;

/**
 * 晃动手机监听
 * @author Administrator
 *
 */
public class TestSensorActivity extends Activity {
	private SensorManager sensorManager;
	private Vibrator vibrator;

	private static final String TAG = "TestSensorActivity";
	private static final int SENSOR_SHAKE = 10;

	private Handler handler = new Handler() {
		@Override
		public void handleMessage(Message msg) {
			super.handleMessage(msg);
			switch (msg.what) {
			case SENSOR_SHAKE:
				Log.i(TAG, "监测到晃动，执行操作");
				break;
			}
		}
	};

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE); // 首先得到传感器管理器对象
		vibrator = (Vibrator) getSystemService(Service.VIBRATOR_SERVICE);

	}

	@SuppressWarnings("static-access")
	@Override
	protected void onResume() {
		super.onResume(); // 注册监听器
		sensorManager.registerListener(mSensorEventListener,
				sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
				sensorManager.SENSOR_DELAY_NORMAL);
		// 第一个参数是Listener，第二个参数是所得传感器类型，第三个参数值获取传感器信息的频率
	}

	@Override
	protected void onStop() {
		super.onStop();
		if(sensorManager != null) {
			sensorManager.unregisterListener(mSensorEventListener);// 解绑定Listener
			sensorManager = null;
		}
	}
	
	/**
	 * 重力感应监听
	 */
	private SensorEventListener mSensorEventListener = new SensorEventListener() {
		
		@Override
		public void onSensorChanged(SensorEvent event) {
			// 传感器信息改变时执行该方法
			float[] values = event.values;
			float x = values[0]; // x轴方向的重力加速度，向右为正
			float y = values[1]; // y轴方向的重力加速度，向前为正
			float z = values[2]; // z轴方向的重力加速度，向上为正
			// 一般在这三个方向的重力加速度达到40就达到了摇晃手机的状态。
			int medumValue = 19;//三星 i9250怎么晃都不会超过20，没办法，只设置19了
			if (x > medumValue || x < - medumValue || y > medumValue || y < - medumValue || z > medumValue || z < - medumValue) {
				vibrator.vibrate(200);
				Message msg = new Message();
				msg.what = SENSOR_SHAKE;
				handler.sendMessage(msg);
				Log.i(TAG, ""+msg);
			}
		}
		
		@Override
		public void onAccuracyChanged(Sensor sensor, int accuracy) {
			
		}
	};

	
}