百度地图之九如何在一个地图上显示多条导航路线

如何在一个地图上显示多条导航路线

实战案例:检索北京天安门驾车到百度大厦有多少条路线图

package com.android.android_baidu_mystranit;



import com.baidu.mapapi.BMapManager;

import com.baidu.mapapi.GeoPoint;

import com.baidu.mapapi.MKAddrInfo;

import com.baidu.mapapi.MKBusLineResult;

import com.baidu.mapapi.MKDrivingRouteResult;

import com.baidu.mapapi.MKGeneralListener;

import com.baidu.mapapi.MKPlanNode;

import com.baidu.mapapi.MKPoiResult;

import com.baidu.mapapi.MKSearch;

import com.baidu.mapapi.MKSearchListener;

import com.baidu.mapapi.MKSuggestionResult;

import com.baidu.mapapi.MKTransitRouteResult;

import com.baidu.mapapi.MKWalkingRouteResult;

import com.baidu.mapapi.MapActivity;

import com.baidu.mapapi.MapView;

import com.baidu.mapapi.TransitOverlay;



import android.os.Bundle;

import android.widget.Toast;



public class MainActivity extends MapActivity {



    // 添加百度地图的相关控件

    private MapView mapView;

    // 加载地图的引擎

    private BMapManager bMapManager;

    // 百度地图的key

    private String KeyString = "8C426377B3526B6BF3672C9BA3BB544D1E8289CD";

    // 用于位置检索、周边检索、范围检索、公交检索、驾乘检索、步行检索等

    private MKSearch mkSearch;

    

    //定义一个起始点,终点

    private MKPlanNode start;

    private MKPlanNode end;



    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        mapView = (MapView) this.findViewById(R.id.bmapView);

        bMapManager = new BMapManager(MainActivity.this);

        // 必须要加载key

        bMapManager.init(KeyString, new MKGeneralListener() {



            public void onGetPermissionState(int arg0) {

                

            }



            public void onGetNetworkState(int arg0) {

                if (arg0 == 300) {

                    Toast.makeText(MainActivity.this, "输入的key有错，请核实！！", 1).show();

                }

            }

        });

        this.initMapActivity(bMapManager);

        //实例化地图的查询类

        mkSearch = new MKSearch();

        mkSearch.init(bMapManager, new MySearchListener());

        //给起始点构建一个坐标

        start = new MKPlanNode();

        start.pt = new GeoPoint((int)(39.915*1E6),(int)(116.404*1E6));

        end = new MKPlanNode();

        end.pt = new GeoPoint(40057031,116307852);

        mkSearch.transitSearch("北京", start, end);

        



    }



    public class MySearchListener implements MKSearchListener {



        public void onGetAddrResult(MKAddrInfo arg0, int arg1) {

            // TODO Auto-generated method stub



        }



        public void onGetBusDetailResult(MKBusLineResult arg0, int arg1) {

            // TODO Auto-generated method stub



        }



        public void onGetDrivingRouteResult(MKDrivingRouteResult arg0, int arg1) {

            // TODO Auto-generated method stub

        }



        public void onGetPoiResult(MKPoiResult result, int type, int iError) {

            // TODO Auto-generated method stub

        }



        public void onGetRGCShareUrlResult(String arg0, int arg1) {

            // TODO Auto-generated method stub



        }



        public void onGetSuggestionResult(MKSuggestionResult arg0, int arg1) {

            // TODO Auto-generated method stub



        }



        public void onGetTransitRouteResult(MKTransitRouteResult arg0, int arg1) {

            // TODO Auto-generated method stub

            if(arg0==null){

                return;

            }

            int planNum = arg0.getNumPlan();//获得所有的驾车路线图

            for(int i=0;i<planNum;i++){

                TransitOverlay overlay = new TransitOverlay(MainActivity.this, mapView);

                overlay.setData(arg0.getPlan(i));

                mapView.getOverlays().add(overlay);

            }

            mapView.invalidate();//刷新一下地图

            mapView.getController().animateTo(arg0.getStart().pt);

        }



        public void onGetWalkingRouteResult(MKWalkingRouteResult arg0, int arg1) {

            // TODO Auto-generated method stub

        }

    }



    @Override

    protected void onDestroy() {

        super.onDestroy();

        if (bMapManager != null) {

            bMapManager.destroy();

            bMapManager = null;

        }

    }



    @Override

    protected void onResume() {

        super.onResume();

        if (bMapManager != null) {

            bMapManager.start();

        }

    }



    @Override

    protected void onPause() {

        super.onPause();

        if (bMapManager != null) {

            bMapManager.stop();

        }

    }



    @Override

    protected boolean isRouteDisplayed() {

        return false;

    }



}