Android实现摇晃手机的监听
2014-11-06 21:47 每天努力一点点 阅读(305) 评论(0) 编辑 收藏 举报摘自:http://blog.csdn.net/xwren362922604/article/details/8515343
监听摇晃手机的类:
/**
* @author renxinwei
*
* @date 2013-1-17 下午09:19:58
*/
public class SensorManagerHelper 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 = 5000;
// 两次检测的时间间隔
private static final int UPTATE_INTERVAL_TIME = 50;
// 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;
// 上下文对象context
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 SensorManagerHelper(Context context) {
// 获得监听对象
this.context = context;
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;
}
/*
* (non-Javadoc)
* android.hardware.SensorEventListener#onAccuracyChanged(android.hardware
* .Sensor, int)
*/
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
// TODO Auto-generated method stub
}
/*
* 重力感应器感应获得变化数据
* android.hardware.SensorEventListener#onSensorChanged(android.hardware
* .SensorEvent)
*/
@Override
public void onSensorChanged(SensorEvent event) {
// TODO Auto-generated method stub
// 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();
}
}
在Activity中使用:
SensorManagerHelper sensorHelper = new SensorManagerHelper(this);
sensorHelper.setOnShakeListener(new OnShakeListener() {
@Override
public void onShake() {
// TODO Auto-generated method stub
System.out.println("shake");
Toast.makeText(MainActivity.this, "你在摇哦", Toast.LENGTH_SHORT).show();
}
});