Android Studio 百度地图导航

配置就不再多说了，上一篇已经详细说过了，这次就是根据经纬度坐标做地图导航，路径规划。直接上代码：

package com.example.appview.mian_page.Frament.Anzhuang_Frament.ItemA_Activity;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;

import android.Manifest;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.view.View;

import com.baidu.location.BDAbstractLocationListener;
import com.baidu.location.BDLocation;
import com.baidu.location.LocationClient;
import com.baidu.location.LocationClientOption;
import com.baidu.mapapi.CoordType;
import com.baidu.mapapi.SDKInitializer;
import com.baidu.mapapi.model.LatLng;
import com.baidu.mapapi.utils.route.BaiduMapRoutePlan;
import com.baidu.mapapi.utils.route.RouteParaOption;
import com.example.appview.R;
import com.example.appview.mian_page.Frament.Preject_Tance_Frament.ItemA_Activity.Preject_ItemA_AlterJZ;
import com.google.android.gms.maps.MapView;
import com.hjq.bar.OnTitleBarListener;

import java.util.ArrayList;
import java.util.List;

public class ItemA_Nav_Activity extends AppCompatActivity {
    double locationX;
    double locationy;
    public  LocationClient mLocationClient = null;
    private MapView mapView;
   // private MyLocationListener myListener = new MyLocationListener();
    @Override
    protected void onCreate(Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
        SDKInitializer.initialize(getApplicationContext());
        SDKInitializer.setCoordType(CoordType.BD09LL);
        setContentView(R.layout.activity_item_anav);
        mLocationClient = new LocationClient(getApplicationContext());
        //声明LocationClient类
       mLocationClient.registerLocationListener(new MyLocationListener());
        getPermissionMethod();
        getlocation();
        LatLng startPoint = new LatLng(39.915291, 116.403857);
        LatLng endPoint = new LatLng(40.056858, 116.308194);
        //构建RouteParaOption参数以及策略
        //也可以通过startName和endName来构造
        RouteParaOption paraOption = new RouteParaOption()
                .startPoint(startPoint)
                .endPoint(endPoint)
                .busStrategyType(RouteParaOption.EBusStrategyType.bus_recommend_way);
       //调起百度地图
        try {
            BaiduMapRoutePlan.openBaiduMapTransitRoute(paraOption, this);
        } catch (Exception e) {
            e.printStackTrace();
        }

      //调起结束时及时调用finish方法以释放相关资源
        BaiduMapRoutePlan.finish(this);
    }
    private void getlocation(){
        LocationClientOption option = new LocationClientOption();
        option.setIsNeedAddress(true);//可选，设置是否需要地址信息，默认不需要
        option.setAddrType("all");
        mLocationClient.setLocOption(option);
        mLocationClient.start();
        //mLocationClient为第二步初始化过的LocationClient对象
        //需将配置好的LocationClientOption对象，通过setLocOption方法传递给LocationClient对象使用
        //更多LocationClientOption的配置，请参照类参考中LocationClientOption类的详细说明
    }
//这个是根据获取当前经纬度坐标，然后到指定坐标做导航。上面直接定义了两个坐标做测试。
    public class MyLocationListener extends BDAbstractLocationListener {
        @Override
        public void onReceiveLocation(BDLocation location){
            //此处的BDLocation为定位结果信息类，通过它的各种get方法可获取定位相关的全部结果
            //以下只列举部分获取经纬度相关（常用）的结果信息
            //更多结果信息获取说明，请参照类参考中BDLocation类中的说明
            double latitude = location.getLatitude();    //获取纬度信息
            double longitude = location.getLongitude();  //获取经度信息
            //float radius = location.getRadius();      //获取定位精度，默认值为0.0f
            //String coorType = location.getCoorType();
            //获取经纬度坐标类型，以LocationClientOption中设置过的坐标类型为准
            int errorCode = location.getLocType();
            //获取定位类型、定位错误返回码，具体信息可参照类参考中BDLocation类中的说明
            //此处的BDLocation为定位结果信息类，通过它的各种get方法可获取定位相关的全部结果
            //以下只列举部分获取地址相关的结果信息
            //更多结果信息获取说明，请参照类参考中BDLocation类中的说明
            //String addr = location.getAddrStr();     //获取详细地址信息
            String country = location.getCountry();    //获取国家
            String province = location.getProvince();  //获取省份
            String city = location.getCity();          //获取城市
            String district = location.getDistrict();  //获取区县
            String street = location.getStreet();      //获取街道信息
            //String adcode = location.getAdCode();     //获取adcode
            String town = location.getTown();          //获取乡镇信息
            String str=country+"-"+province+"-"+city+"-"+district+"-"+street+"-"+town;
            locationX=latitude;
            locationy=longitude;
        }
    }
    // 权限请求
    private void getPermissionMethod() {
        List<String> permissionList = new ArrayList<>();
        if(ContextCompat.checkSelfPermission(ItemA_Nav_Activity.this, Manifest.permission.ACCESS_FINE_LOCATION)!= PackageManager.PERMISSION_GRANTED){
            permissionList.add(Manifest.permission.ACCESS_FINE_LOCATION);
        }
        if (!permissionList.isEmpty()){
            //权限列表不是空
            String[] permissions = permissionList.toArray(new String[permissionList.size()]);
            ActivityCompat.requestPermissions(ItemA_Nav_Activity.this,permissions,1);
        }
    }
}

，