? 最近跟著百度地圖API學地圖開發，先是學了路徑搜索，對于已知坐標的兩點進行駕車、公交、步行三種路徑的搜索（公交路徑運行沒效果，待學習中），后來又 學了定位功能，能夠獲取到自己所在位置的經緯度，但當將兩者合起來先自動獲取自己所在位置的經緯度然后與固定地點進行路徑搜索時卻弄不出來了，因為剛開始 寫的兩者在兩個類中總是取不到經緯度值，后來將兩者寫到同一個類中去了，終于取到經緯度值了，也運行出來了。需要 在?BDLocationListener的onReceiveLocation里獲取到經緯度值，因為已經能直接拿經緯度值了，所以就可以在里面進行路 徑搜索了。蘿莉啰嗦說了一些估計只有我自己能看懂。。。。

總結一下自己實現的過程（只說主要的）：

1.初始化變量

2.在setContentView的前面初始化BMapManager.

3.得到MapController，確定一個點將mapview的中心設在那，（此步不可少），若缺少mapview會顯示到默認的地址（貌似是北京那塊地）影響后面起始位置路徑的搜索。

4.生成LoctionClient，使用LocationClientOption對其進行簡單的設置。調用locationClient.start();
locationClient.requestLocation();進行定位獲取位置，使用回調給LocatiopnClient注冊監聽器,在回調方 法onReceiveLocation獲得經緯度，使用MKPlanNode設置起始位置點（已經獲取到的經緯度）與終點，就可以初始化 MKSearch，復寫其參數監聽器中的回調方法onGetWalkingRouteResult、onGetTransitRouteResult、 onGetDrivingRouteResult，最后mkSearch.walkingSearch(null, satrt, null, end);
//mkSearch.drivingSearch(null, satrt, null, end);?
//mkSearch.transitSearch("上海", satrt, end);（運行不出，待學習）
就可以進行路線搜索了。

代碼如下

?

package com.example.lockposi;

import com.baidu.location.BDLocation;
import com.baidu.location.BDLocationListener;
import com.baidu.location.LocationClient;
import com.baidu.location.LocationClientOption;
import com.baidu.mapapi.BMapManager;
import com.baidu.mapapi.MKGeneralListener;
import com.baidu.mapapi.map.MKEvent;
import com.baidu.mapapi.map.MapController;
import com.baidu.mapapi.map.MapView;
import com.baidu.mapapi.map.RouteOverlay;
import com.baidu.mapapi.search.MKAddrInfo;
import com.baidu.mapapi.search.MKBusLineResult;
import com.baidu.mapapi.search.MKDrivingRouteResult;
import com.baidu.mapapi.search.MKPlanNode;
import com.baidu.mapapi.search.MKPoiInfo;
import com.baidu.mapapi.search.MKPoiResult;
import com.baidu.mapapi.search.MKSearch;
import com.baidu.mapapi.search.MKSearchListener;
import com.baidu.mapapi.search.MKSuggestionResult;
import com.baidu.mapapi.search.MKTransitRouteResult;
import com.baidu.mapapi.search.MKWalkingRouteResult;
import com.baidu.platform.comapi.basestruct.GeoPoint;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {

?TextView textView;
LocationClient locationClient;
double latitude,longitude;
private MapView mapview;
BMapManager bMapManager;
static final String API_KEY="07418AEC69BAAB7104C6230A6120C580DFFAEEBB";

?@Override
protected void onCreate(Bundle savedInstanceState) {
? super.onCreate(savedInstanceState);
? bMapManager=new BMapManager(getApplicationContext());
? bMapManager.init(API_KEY,new MKGeneralListener() {

?? @Override
?? public void onGetPermissionState(int arg0) {
??? // TODO Auto-generated method stub
??? if(arg0==MKEvent.ERROR_PERMISSION_DENIED){
???? Toast.makeText(getApplicationContext(), "請輸入正確的key",1000).show();

??? }
?? }

?? @Override
?? public void onGetNetworkState(int arg0) {
??? // TODO Auto-generated method stub
??? if (arg0==MKEvent.ERROR_NETWORK_CONNECT) {
???? Toast.makeText(getApplicationContext(), "您的網絡出錯了",1000).show();
??? }
?? }
? });
? setContentView(R.layout.activity_main);
???? mapview = (MapView) this.findViewById(R.id.bmapView);?
???????? mapview.setBuiltInZoomControls(true); ?

???????? MapController mMapController = mapview.getController(); ?

???????? GeoPoint geoPoint = new GeoPoint((int) (31.243319 * 1E6),?
???????????????? (int) (121.509075 * 1E6));?
???????? mMapController.setCenter(geoPoint);?
???????? mMapController.setZoom(12); ?

? textView=(TextView) findViewById(R.id.textView1);
? locationClient=new LocationClient(getApplicationContext());
? LocationClientOption locationClientOption=new LocationClientOption();
? locationClientOption.setOpenGps(true);
? locationClientOption.setCoorType("bd09ll");
? locationClientOption.setPriority(LocationClientOption.NetWorkFirst);
? locationClientOption.setScanSpan(5000);
? locationClient.setLocOption(locationClientOption);
? locationClient.start();
? locationClient.requestLocation();
? Toast.makeText(getApplicationContext(), String.valueOf(latitude),1000).show();

? locationClient.registerLocationListener(new BDLocationListener() {

?? @Override
?? public void onReceivePoi(BDLocation arg0) {
??? // TODO Auto-generated method stub
??? if (arg0==null) {
???? return;
??? }
??? latitude=arg0.getLatitude();
??? longitude=arg0.getLongitude();
??? StringBuilder sBuilder=new StringBuilder();
?????? sBuilder.append("latitude:"+String.valueOf(arg0.getLatitude())).append("longitude:"+String.valueOf(arg0.getLongitude()));
?????? textView.setText(sBuilder.toString());
?? }

?? @Override
?? public void onReceiveLocation(BDLocation arg0) {
??? // TODO Auto-generated method stub
??? if (arg0==null) {
???? return;
??? }
??? latitude=arg0.getLatitude();
??? longitude=arg0.getLongitude();
??? StringBuilder sBuilder=new StringBuilder();
?????? sBuilder.append("latitude:"+arg0.getLatitude()).append("longitude:"+arg0.getLongitude());
?????? textView.setText(sBuilder.toString());
?????? MKPlanNode satrt=new MKPlanNode();
??? satrt.pt=new GeoPoint((int) (31.205889 * 1E6),?
????????????????? (int) (121.637942 * 1E6));
??? MKPlanNode end=new MKPlanNode();
??? end.pt=new GeoPoint((int) (31.243319 * 1E6), (int) (121.509075 * 1E6));
??? final MKSearch mkSearch=new MKSearch();
??? mkSearch.init(bMapManager, new MKSearchListener() {

???? private int intidx;

???? @Override
???? public void onGetWalkingRouteResult(MKWalkingRouteResult arg0, int arg1) {
????? // TODO Auto-generated method stub
????? if (arg0==null) {
?????? return;
????? }
????? RouteOverlay routeOverlay=new RouteOverlay(MainActivity.this, mapview);
????? routeOverlay.setData(arg0.getPlan(0).getRoute(0));
????? mapview.getOverlays().add(routeOverlay);
????? mapview.refresh();
???? }

???? @Override
???? public void onGetTransitRouteResult(MKTransitRouteResult arg0, int arg1) {
????? // TODO Auto-generated method stub
????? if (arg0==null) {
?????? return;
????? }
????? RouteOverlay routeOverlay=new RouteOverlay(MainActivity.this, mapview);
????? routeOverlay.setData(arg0.getPlan(0).getRoute(0));
????? mapview.getOverlays().add(routeOverlay);
????? mapview.refresh();

???? }

???? @Override
???? public void onGetSuggestionResult(MKSuggestionResult arg0, int arg1) {
????? // TODO Auto-generated method stub

???? }

???? @Override
???? public void onGetPoiResult(MKPoiResult arg0, int arg1, int arg2) {
????? // TODO Auto-generated method stub
??????? if (arg2 != 0 || arg0 == null) {?
?????????????????? Toast.makeText(MainActivity.this, "抱歉，未找到結果", Toast.LENGTH_LONG).show();?
?????????????????? return;?
?????????? }?
?????????? // 找到公交路線poi node??
?????????? MKPoiInfo curPoi = null;?
?????????? int totalPoiNum? = arg0.getNumPois();?
?????????? for(intidx = 0; intidx<totalPoiNum; intidx++ ) {?
?????????????????? curPoi = arg0.getPoi(intidx);??
?????????????????? if ( 2 == curPoi.ePoiType ) {?
?????????????????????????? break;??
?????????????????? }?
?????????? }?
?????????? mkSearch.busLineSearch("上海", curPoi.uid);?
???? }

???? @Override
???? public void onGetPoiDetailSearchResult(int arg0, int arg1) {
????? // TODO Auto-generated method stub

???? }

???? @Override
???? public void onGetDrivingRouteResult(MKDrivingRouteResult arg0, int arg1) {
????? // TODO Auto-generated method stub
????? if (arg0==null) {
?????? return;
????? }
????? RouteOverlay routeOverlay=new RouteOverlay(MainActivity.this, mapview);
????? routeOverlay.setData(arg0.getPlan(0).getRoute(0));
????? mapview.getOverlays().add(routeOverlay);
????? mapview.refresh();
???? }

???? @Override
???? public void onGetBusDetailResult(MKBusLineResult arg0, int arg1) {
????? // TODO Auto-generated method stub
????? if (arg1 != 0 || arg0 == null) {?
?????????????????? Toast.makeText(MainActivity.this, "抱歉，未找到結果", Toast.LENGTH_LONG).show();?
?????????????????? return;?
?????????? }?
?????????? RouteOverlay routeOverlay = new RouteOverlay(MainActivity.this, mapview);??? // 此處僅展示一個方案作為示例?
?????????? routeOverlay.setData(arg0.getBusRoute());?
?????????? mapview.getOverlays().clear();?
?????????? mapview.getOverlays().add(routeOverlay);?
?????????? mapview.refresh();?
?????????? mapview.getController().animateTo(arg0.getBusRoute().getStart());?
???? }

???? @Override
???? public void onGetAddrResult(MKAddrInfo arg0, int arg1) {
????? // TODO Auto-generated method stub

???? }
??? });

??? mkSearch.walkingSearch(null, satrt, null, end);
??? //mkSearch.drivingSearch(null, satrt, null, end);
??? //mkSearch.transitSearch("上海", satrt, end);

?? }

? });

?

?}

?

}

轉載于:https://www.cnblogs.com/xiaochao1234/p/3732611.html

總結

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