监听手机晃动SensorEventListener
http://blog.csdn.net/xfks555/article/details/6703464
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) { }}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();}});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); }