传感器AssistantSensorListener
package com.qianfeng.assistant.modules.other.utils; import android.content.Context; import android.hardware.Sensor; import android.hardware.SensorEvent; import android.hardware.SensorEventListener; import android.hardware.SensorManager; /** * Created by Administrator on 16-3-29. */ public class AssistantSensorListener implements SensorEventListener { private Sensor sensor; private SensorManager manager; private final long thresholdTime=300; private long lastTime; private long tempTime; private final double thresholdSpeed=100; private IShakeListener listener; /** * 记录传感器上一次的空间位置 */ private float lastX,lastY,lastZ; public AssistantSensorListener(Context context){ //获取传感器manager manager= (SensorManager) context.getSystemService(Context.SENSOR_SERVICE); if(manager!=null){ //获取默认的加速度传感器 sensor=manager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER); if(sensor!=null){ //注册传感器 manager.registerListener(this,sensor,Sensor.TYPE_ACCELEROMETER); } } } @Override public void onSensorChanged(SensorEvent event) { long currentTime=System.currentTimeMillis(); tempTime=currentTime-lastTime; //控制刷新的频率 if( tempTime< thresholdTime){ return; } lastTime=currentTime; float[] values=event.values; float x=values[0]; float y=values[1]; float z=values[2]; LogUtils.d("onSensorChanged event", x + "," + y+","+z+";"); //计算三个坐标轴上的相对位移 float tempx=x-lastX; float tempy=y-lastY; float tempz=z-lastZ; double speed=Math.sqrt(tempx*tempx+tempy*tempy+tempz*tempz)*1000/tempTime; //重新记录位置 lastX=x; lastY=y; lastZ=z; //如果速度达到100,即可认定手机正在摇动,用监听器回调出去 if(speed > thresholdSpeed && listener!=null){ listener.onShake(speed); } LogUtils.e("speed"+speed); } /** * 设置摇一摇监听器 * * @param listener 摇一摇监听器 */ public void setShakeListener(IShakeListener listener){ this.listener=listener; } /** * * 注销系统服务 */ public void unRegisterManager(){ if(manager!=null&&sensor!=null){ manager.unregisterListener(this); } } @Override public void onAccuracyChanged(Sensor sensor, int accuracy) { } /** * 摇一摇接口 */ public interface IShakeListener{ /** * 正在摇动 *speed 摇动的速度 */ void onShake(double speed); } }
名称栏目:传感器AssistantSensorListener
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