百度地图之七公交换乘路线搜索

公交换乘路线搜索及TransitOverlay

在实际开发中我们在地图搜索的时候需要给用户提供公交换乘的路线图的检索功能。

实战案例：检索从天安门到百度大厦的公交换乘路线

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.RouteOverlay;

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;

            }

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

            transiOverlay.setData(arg0.getPlan(0));

            mapView.getOverlays().add(transiOverlay);

            mapView.invalidate();

        }



        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;

    }



}