Android原生GPS和网络定位工具类

在应用开发中我们常常需要网络获取位置的方法，这里做一个工具类的封装，使用的是Android原生定位，包含两种方式，一种是原生GPS一种是网络定位的封装实现：

工具类代码如下所示：

package com.vondear.tools.tools;import android.Manifest;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.content.SharedPreferences;import android.content.pm.PackageManager;import android.location.Location;import android.location.LocationListener;import android.location.LocationManager;import android.net.ConnectivityManager;import android.net.NetworkInfo;import android.os.Bundle;import android.support.v4.app.ActivityCompat;import android.app.Activity;import android.support.v4.content.LocalBroadcastManager;import android.view.accessibility.AccessibilityManager;import android.widget.Toast;import com.ta.utdid2.android.utils.SharedPreferenceHelper;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;/** * * Created by AndyYuan on time at 2019/6/20. */public class GetGPSUtil {    static GetGPSUtil getGPSUtil;    public static GetGPSUtil getInstance() {        if (getGPSUtil == null) getGPSUtil = new GetGPSUtil();        return getGPSUtil;    }    /**     * 获取经纬度     *     * @param context     * @return     */    private String getLngAndLat(Context context) {        double latitude = 0.0;        double longitude = 0.0;        LocationManager locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);        if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {  //从gps获取经纬度            if (ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(context, 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 "没有GPS权限";            }            Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);            if (location != null) {                latitude = location.getLatitude();                longitude = location.getLongitude();            } else {//当GPS信号弱没获取到位置的时候又从网络获取                Toast.makeText(context, "GPS信号弱获取不到", Toast.LENGTH_SHORT).show();                return getLngAndLatWithNetwork(context);            }        } else {    //从网络获取经纬度            locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000, 0, locationListener);//通过查阅资料好像我们的Android手机要开启过GPS（第一次获取须GPS获取或者其他第三方应用开启使用过GPS）后然后getLastKnownLocation(LoactionManager.NETWORK_PROVIDER)这个方法才不会返回空。            Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);            if (location != null) {                latitude = location.getLatitude();                longitude = location.getLongitude();            }        }        return longitude + "," + latitude;    }    //从网络获取经纬度    public String getLngAndLatWithNetwork(Context context) {        double latitude = 0.0;        double longitude = 0.0;        LocationManager locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);        if (ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(context, 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 "没有网络Internet获取权限";        }        locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000, 0, locationListener);        Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);        if (location != null) {            latitude = location.getLatitude();            longitude = location.getLongitude();        }        return longitude + "," + latitude;    }    LocationListener locationListener = new LocationListener() {        // Provider的状态在可用、暂时不可用和无服务三个状态直接切换时触发此函数        @Override        public void onStatusChanged(String provider, int status, Bundle extras) {        }        // Provider被enable时触发此函数，比如GPS被打开        @Override        public void onProviderEnabled(String provider) {        }        // Provider被disable时触发此函数，比如GPS被关闭        @Override        public void onProviderDisabled(String provider) {        }        //当坐标改变时触发此函数，如果Provider传进相同的坐标，它就不会被触发        @Override        public void onLocationChanged(Location location) {        }    };}

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