百度地图之十经纬度和地址的转换

经纬度和地址的转换

在实际开发中,我们会根据地理坐标查询地址信息(包含经度和纬度)

我们可以使用geocode返回结果在MKSearchListener里的onGetAddrResult方法

reverseGeocode返回结果在MKSearchListener里的onGetAddrResult方法

根据关键词查询所在的位置

综合实战案例：经纬度以及根据关键字查询

View Code

package com.android.android_baidu_reversemap;



import java.util.ArrayList;

import java.util.List;



import com.baidu.mapapi.BMapManager;

import com.baidu.mapapi.GeoPoint;

import com.baidu.mapapi.ItemizedOverlay;

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.OverlayItem;



import android.content.Context;

import android.graphics.drawable.Drawable;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.EditText;

import android.widget.Toast;



public class MainActivity extends MapActivity implements OnClickListener{



    // 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;

    

    private Button button1,button2;



    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

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

        button1 = (Button) this.findViewById(R.id.reverseCode);

        button1.setOnClickListener(this);

        button2 = (Button) this.findViewById(R.id.geocode);

        button2.setOnClickListener(this);

        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();

                }

            }

        });

        bMapManager.start();

        this.initMapActivity(bMapManager);

        mapView.setBuiltInZoomControls(true);

        

        

        //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 OverItemT extends ItemizedOverlay<OverlayItem>{



        //可以从服务器端 接受一组经纬度标注在地图上

        private List<OverlayItem> list = new ArrayList<OverlayItem>();

        public OverItemT(Drawable marker,Context context,GeoPoint geoPoint,String title) {

            super(boundCenterBottom(marker));

            // TODO Auto-generated constructor stub

            list.add(new OverlayItem(geoPoint, title, null));

            populate();

        }



        @Override

        protected OverlayItem createItem(int arg0) {

            // TODO Auto-generated method stub

            return list.get(arg0);

        }



        @Override

        public int size() {

            // TODO Auto-generated method stub

            return list.size();

        }

        

    }



    public class MySearchListener implements MKSearchListener {



        public void onGetAddrResult(MKAddrInfo res, int error) {

            // TODO Auto-generated method stub

            if(error!=0){

                String msg = String.format("错误号:%d",error);

                Toast.makeText(MainActivity.this, msg, 1).show();

                return;

            }

            mapView.getController().animateTo(res.geoPt);

            String msg = String.format("纬度:%f  经度:%f\r\n", res.geoPt.getLatitudeE6()/1e6,res.geoPt.getLongitudeE6()/1e6);

            Drawable drawable = getResources().getDrawable(R.drawable.icon_marka);

            //让图片直接标注在地图上，设置图片的位置

            drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());

            mapView.getOverlays().clear();

            //创建一个图层 

            //mapView.getOverlays().add();

        }



        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

            if(result==null||iError!=0){

                Toast.makeText(MainActivity.this,"解析失败", 1).show();

                return;

            }

            //查询的点数大于0,表示查找到

            if(result!=null&&result.getCurrentNumPois()>0){

                GeoPoint geoPoint = result.getAllPoi().get(0).pt;

                //将查找到的点标注在地图上

                mapView.getController().animateTo(geoPoint);

                //从GeoPoint中取出经纬度转换

                String msg = String.format("纬度:%f 经度:%f\f\n", geoPoint.getLatitudeE6()/1e6,geoPoint.getLongitudeE6()/1e6);

                msg+="\r\n附近有:";

                for(int i=0;i<result.getAllPoi().size();i++){

                    msg+=(result.getAllPoi().get(i).name+";");

                }

                Toast.makeText(MainActivity.this, msg, 1).show();

            }

        }



        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

        }



        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;

    }



    public void onClick(View v) {

        // TODO Auto-generated method stub

        switch (v.getId()) {

        case R.id.reverseCode:

            GeoPoint geoPoint = new GeoPoint(39904965,116327764);

            mkSearch.reverseGeocode(geoPoint);

            break;

        case R.id.geocode:

            //查询所在的省市 

            EditText city = (EditText) this.findViewById(R.id.city);

            //查询所在的地址

            EditText geocodekey = (EditText) this.findViewById(R.id.geocodekey);

            mkSearch.geocode(city.getText().toString(), geocodekey.getText().toString());

            break;

        default:

            break;

        }

    }



}