不要复杂，只想简简单单用个工具类，获取经纬度。
然后，计算下两地距离。

获取经纬度的工具类

public class AmapUtils {
    //声明AMapLocationClientOption对象
    public static AMapLocationClientOption mLocationOption = null;
    private static AMapLocationClient mLocationClient =null;
    private static double juli ;

    //获取经纬度
    public static void getLatlon(AMapLocationListener ap){

        mLocationClient= new AMapLocationClient(NimApplication.getContext());
        mLocationClient.setLocationListener(ap);
        //初始化AMapLocationClientOption对象
        mLocationOption = new AMapLocationClientOption();
        //设置定位模式为AMapLocationMode.Hight_Accuracy，高精度模式。
        mLocationOption.setLocationMode(AMapLocationClientOption.AMapLocationMode.Hight_Accuracy);
        //单次定位
        mLocationOption.setOnceLocationLatest(true);
        //设置是否返回地址信息（默认返回地址信息）
        mLocationOption.setNeedAddress(true);
        //设置是否强制刷新WIFI，默认为true，强制刷新。
        mLocationOption.setWifiActiveScan(false);
        //设置是否允许模拟位置,默认为false，不允许模拟位置
        mLocationOption.setMockEnable(false);
        //单位是毫秒，默认30000毫秒，建议超时时间不要低于8000毫秒。
        mLocationOption.setHttpTimeOut(20000);
        //关闭缓存机制
        mLocationOption.setLocationCacheEnable(false);
        //给定位客户端对象设置定位参数
        mLocationClient.setLocationOption(mLocationOption);
        //启动定位
        mLocationClient.startLocation();

    }

    /*private AMapLocationListener mLocationListener = new AMapLocationListener(){

        @Override
        public void onLocationChanged(AMapLocation aMapLocation) {
            if(aMapLocation!=null){
                if(aMapLocation.getErrorCode()==0){
                    int locationType = aMapLocation.getLocationType();//获取当前定位结果来源，如网络定位结果，详见定位类型表
                    double latitude = aMapLocation.getLatitude();//获取纬度
                    double longitude = aMapLocation.getLongitude();//获取经度
                    float accuracy = aMapLocation.getAccuracy();//获取精度信息
                    Log.e("定位",locationType+" +" +latitude+"+"+longitude+"+"+accuracy);
                    double distance = GetDistanceUtils.getDistance(118.924079
                            , 42.249544, longitude, latitude);
                    Log.e("定位",distance+"米");
                }else{


                }
            }
        }
    };*/
}

activity中使用

        AmapUtils.getLatlon(new AMapLocationListener() {
            @Override
            public void onLocationChanged(AMapLocation aMapLocation) {
                if(aMapLocation!=null){
                    if(aMapLocation.getErrorCode()==0){
                        int locationType = aMapLocation.getLocationType();//获取当前定位结果来源，如网络定位结果，详见定位类型表
                        double latitude = aMapLocation.getLatitude();//获取纬度
                        double longitude = aMapLocation.getLongitude();//获取经度
                        float accuracy = aMapLocation.getAccuracy();//获取精度信息

                        Log.e("高德定位经纬度",locationType+" + " +latitude+" + "+longitude+" + "+accuracy);
                        Log.e("高德定位经纬度","当前经度:"+longitude);
                        Log.e("高德定位经纬度","当前纬度:"+latitude);
                        /*double distance = GetDistanceUtils.getDistance(118.924079
                                , 42.249544, longitude, latitude);
                        Log.e("定位",distance+"米");*/
                    }else{


                    }
                }
            }
        });

相关的计算两地距离的工具类

public class AmapDistanceUtils {
    private static final double EARTH_RADIUS = 6378137.0;

    public static double getDistance(double longitude, double latitue, double longitude2, double latitue2) {
        double lat1 = rad(latitue);
        double lat2 = rad(latitue2);
        double a = lat1 - lat2;
        double b = rad(longitude) - rad(longitude2);
        double s = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(a / 2), 2) + Math.cos(lat1) * Math.cos(lat2) * Math.pow(Math.sin(b / 2), 2)));
        s = s * EARTH_RADIUS;
        s = Math.round(s * 10000) / 10000;
        return s;
    }

    private static double rad(double d) {
        return d * Math.PI / 180.0;
    }
}

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本文完。

参考：https://blog.csdn.net/qq939782569/article/details/53994823