监听手机晃动（摇一摇）SensorEventListener

import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;

/**
 *
 * 一个检测手机摇晃的监听器
 * @author fuzhengchao
 *
 */
public class ShakeListener implements SensorEventListener {
 //速度阈值，当摇晃速度达到这值后产生作用
 private static final int SPEED_SHRESHOLD = 4000;
 //两次检测的时间间隔
 private static final int UPTATE_INTERVAL_TIME = 70;

 //传感器管理器
 private SensorManager sensorManager;
 //传感器
 private Sensor sensor;
 //重力感应监听器
 private OnShakeListener onShakeListener;
 //上下文
 private Context context;
 //手机上一个位置时重力感应坐标
 private float lastX;
 private float lastY;
 private float lastZ;

 //上次检测时间
 private long lastUpdateTime;

 //构造器
 public ShakeListener(Context c) {
  //获得监听对象
  context = c;
  start();
 }

 //开始
 public void start() {
  //获得传感器管理器
  sensorManager = (SensorManager)context.getSystemService(Context.SENSOR_SERVICE);
  if(sensorManager != null) {
   //获得重力传感器
   sensor = sensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
  }
  //注册
  if(sensor != null) {
   sensorManager.registerListener(this, sensor, SensorManager.SENSOR_DELAY_GAME);
  }

 }

 //停止检测
 public void stop() {
  sensorManager.unregisterListener(this);
 }

 //摇晃监听接口
 public interface OnShakeListener {
  public void onShake();
 }

 //设置重力感应监听器
 public void setOnShakeListener(OnShakeListener listener) {
  onShakeListener = listener;
 }


 //重力感应器感应获得变化数据
 public void onSensorChanged(SensorEvent event) {
  //现在检测时间
  long currentUpdateTime = System.currentTimeMillis();
  //两次检测的时间间隔
  long timeInterval = currentUpdateTime - lastUpdateTime;
  //判断是否达到了检测时间间隔
  if(timeInterval < UPTATE_INTERVAL_TIME)
   return;
  //现在的时间变成last时间
  lastUpdateTime = currentUpdateTime;

  //获得x,y,z坐标
  float x = event.values[0];
  float y = event.values[1];
  float z = event.values[2];

  //获得x,y,z的变化值
  float deltaX = x - lastX;
  float deltaY = y - lastY;
  float deltaZ = z - lastZ;

  //将现在的坐标变成last坐标
  lastX = x;
  lastY = y;
  lastZ = z;

  double speed = Math.sqrt(deltaX*deltaX + deltaY*deltaY + deltaZ*deltaZ)/timeInterval * 10000;
  //达到速度阀值，发出提示
  if(speed >= SPEED_SHRESHOLD)
   onShakeListener.onShake();
 }

 public void onAccuracyChanged(Sensor sensor, int accuracy) {

 }

}

用法： 

ShakeListener shakeListener = new ShakeListener(this);//创建一个对象
shakeListener.setOnShakeListener(new OnShakeListener(){//调用setOnShakeListener方法进行监听

public void onShake() {
    //对手机摇晃后的处理（如换歌曲，换图片，震动……）
    //onVibrator();
}

});

//震动 

private void onVibrator() {
  Vibrator vibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
  if (vibrator == null) {
   Vibrator localVibrator = (Vibrator) context.getApplicationContext()
     .getSystemService("vibrator");
   vibrator = localVibrator;
  }
  vibrator.vibrate(100L);
 }

摇一摇精简代码实现 
http://blog.sina.com.cn/s/blog_66cfbaa5010120w8.html 

Android中类似于奇虎360手机卫士中摇一摇效果实现 
http://blog.csdn.net/nono_love_lilith/article/details/7554341