package com.yiwen.mobike.map;
import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
public class MyOrientationListener implements SensorEventListener {
private SensorManager mSensorManager;
private Sensor mSensor;
private Context mContext;
private float lastX;
private OnOrientationListener mOnOrientationListener;
public MyOrientationListener(Context context)
{
this.mContext=context;
}
public void start()
{
mSensorManager= (SensorManager) mContext
.getSystemService(Context.SENSOR_SERVICE);
if(mSensorManager!= null)
{
//获得方向传感器
mSensor=mSensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION);
}
//判断是否有方向传感器
if(mSensor!=null)
{
//注册监听器
mSensorManager.registerListener(this,mSensor, SensorManager.SENSOR_DELAY_UI);
}
}
public void stop()
{
mSensorManager.unregisterListener(this);
}
//方向改变
@Override
public void onSensorChanged(SensorEvent event) {
if(event.sensor.getType()== Sensor.TYPE_ORIENTATION)
{
float x=event.values[SensorManager.DATA_X];
if(Math.abs(x-lastX)>1.0)
{
if(mOnOrientationListener!=null)
{
mOnOrientationListener.onOrientationChanged(x);
}
}
lastX=x;
}
}
public void setOnOrientationListener(OnOrientationListener listener)
{
mOnOrientationListener=listener;
}
public interface OnOrientationListener
{
void onOrientationChanged(float x);
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
}
