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@hiwanz
Last active Jul 12, 2016
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手机摇一摇类,调用代码: ShakeListener shakeListener = new ShakeListener(this); shakeListener.setOnShakeListener(new ShakeListener.OnShakeListener() { //调用setOnShakeListener方法进行监听,摇晃手机输出信息 public void onShake() { Log.v("debuginfo","shakeing"); } });
import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
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 = 2500;
//两次检测的时间间隔
private static final int UPTATE_INTERVAL_TIME = 100;
//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) {
}
}
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