临近位置点警告LocationManager

package com.gps.locationgps;

import android.Manifest;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.location.LocationManager;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;

/**
* 临近某个位置点
*/
public class ProximityActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_proximity);

String locService = Context.LOCATION_SERVICE;  //定位服务常量

LocationManager locationManager;
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

//定义位置点信息 杭州东站大致经纬度
double longitude = 120.189244;
double latitude = 30.248885;

//定义半径(5公里)
float radius = 5000;

//    定义 Intent
Intent intent = new Intent(this, ProximityAlertReceiver.class);

//将 intent 包装成 android.app.PendingIntent
PendingIntent pi = PendingIntent.getBroadcast(this, -1, intent, 0);

//添加临近警告
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) !=
PackageManager.PERMISSION_GRANTED &&
ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) !=
PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
//    ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
//   public void onRequestPermissionsResult(int requestCode, String[] permissions,
//                                          int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
locationManager.addProximityAlert(latitude, longitude, radius, -1, pi);
}
}

package com.gps.locationgps;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.location.LocationManager;
import android.widget.Toast;

public class ProximityAlertReceiver extends BroadcastReceiver {
public ProximityAlertReceiver() {
}

@Override
public void onReceive(Context context, Intent intent) {
// 获取是否进入指定区域

boolean isEnter = intent.getBooleanExtra(LocationManager.KEY_PROXIMITY_ENTERING,false);

if (isEnter) {
//显示提示信息
Toast.makeText(context, "您已经进入北京东站", Toast.LENGTH_SHORT).show();
}else {
Toast.makeText(context, "您已经离开了北京东站", Toast.LENGTH_SHORT).show();
}
}
}