在地图上显示当前的位置

  1 package com.aihunqin.crazy;
  2 
  3 import android.app.Activity;
  4 import android.os.Bundle;
  5 import android.view.View;
  6 import android.view.View.OnClickListener;
  7 import android.widget.TextView;
  8 
  9 import com.baidu.location.BDLocation;
 10 import com.baidu.location.BDLocationListener;
 11 import com.baidu.location.LocationClient;
 12 import com.baidu.location.LocationClientOption;
 13 import com.baidu.location.LocationClientOption.LocationMode;
 14 import com.baidu.mapapi.SDKInitializer;
 15 import com.baidu.mapapi.map.BaiduMap;
 16 import com.baidu.mapapi.map.BitmapDescriptor;
 17 import com.baidu.mapapi.map.BitmapDescriptorFactory;
 18 import com.baidu.mapapi.map.MapStatusUpdate;
 19 import com.baidu.mapapi.map.MapStatusUpdateFactory;
 20 import com.baidu.mapapi.map.MapView;
 21 import com.baidu.mapapi.map.MarkerOptions;
 22 import com.baidu.mapapi.map.OverlayOptions;
 23 import com.baidu.mapapi.model.LatLng;
 24 import com.baidu.mapapi.search.route.DrivingRoutePlanOption;
 25 import com.baidu.mapapi.search.route.DrivingRouteResult;
 26 import com.baidu.mapapi.search.route.OnGetRoutePlanResultListener;
 27 import com.baidu.mapapi.search.route.PlanNode;
 28 import com.baidu.mapapi.search.route.RoutePlanSearch;
 29 import com.baidu.mapapi.search.route.TransitRouteResult;
 30 import com.baidu.mapapi.search.route.WalkingRouteResult;
 31 import com.example.aihunqin.R;
 32 
 33 public class WenhongLocation extends Activity {
 34     BaiduMap mBaiduMap = null;
 35     MapView mMapView = null;
 36     public LocationClient mLocationClient;
 37     public MyLocationListener mMyLocationListener;
 38     public TextView mLocationResult, back;
 39 
 40     @Override
 41     protected void onCreate(Bundle savedInstanceState) {
 42 
 43         super.onCreate(savedInstanceState);
 44         SDKInitializer.initialize(getApplicationContext());
 45         setContentView(R.layout.layout_wenhonglocation);
 46 
 47         back = (TextView) findViewById(R.id.back);
 48         back.setVisibility(View.VISIBLE);
 49         back.setOnClickListener(new OnClickListener() {
 50 
 51             @Override
 52             public void onClick(View v) {
 53                 finish();
 54             }
 55         });
 56 
 57         mMapView = (MapView) findViewById(R.id.bmapView);
 58         mBaiduMap = mMapView.getMap();
 59 
 60         mLocationClient = new LocationClient(getApplicationContext());
 61         mMyLocationListener = new MyLocationListener();
 62         mLocationClient.registerLocationListener(mMyLocationListener);
 63         InitLocation();
 64         mLocationClient.start();
 65 
 66     }
 67 
 68     /**
 69      * 实现定位回调监听
 70      * 
 71      * @author Alex
 72      * 
 73      */
 74     public class MyLocationListener implements BDLocationListener {
 75 
 76         @Override
 77         public void onReceiveLocation(BDLocation location) {
 78             // Receive Location
 79             StringBuffer sb = new StringBuffer(256);
 80             sb.append("time:");
 81             sb.append(location.getTime());
 82             sb.append("\nerror code:");
 83             sb.append(location.getLocType());
 84             sb.append("\nlatitude:");
 85             sb.append(location.getLatitude());
 86             sb.append("\nlontitude:");
 87             sb.append(location.getLongitude());
 88             sb.append("\nradius:");
 89             sb.append(location.getRadius());
 90             if (location.getLocType() == BDLocation.TypeNetWorkLocation) {
 91                 sb.append("\naddr:");
 92                 sb.append(location.getAddrStr());
 93                 // 运营商信息
 94                 sb.append("\noperationers:");
 95                 sb.append(location.getOperators());
 96             }
 97 
 98             setMarker(location.getLatitude(), location.getLongitude());
 99             // logMsg(sb.toString());
100         }
101     }
102 
103     void setMarker(double lat, double lng) {
104         // 定义Markker坐标点
105         LatLng point = new LatLng(lat, lng);
106         // 构建Marker图标
107         BitmapDescriptor bitmap = BitmapDescriptorFactory
108                 .fromResource(R.drawable.startpoint);
109         // 构建MarkerOption,用于在地图上添加Marker
110         OverlayOptions option = new MarkerOptions().position(point)
111                 .icon(bitmap);
112         // 在地图上添加Marker,并显示
113         mBaiduMap.addOverlay(option);
114 
115         MapStatusUpdate mapstatusupdate = MapStatusUpdateFactory
116                 .newLatLng(point);
117 
118         mBaiduMap.setMapStatus(mapstatusupdate);
119 
120         // setRoutePlan(point);
121     }
122 
123     void setRoutePlan(LatLng point) {
124         // 驾车线路规划
125         RoutePlanSearch mSearch = RoutePlanSearch.newInstance();
126         OnGetRoutePlanResultListener listener = new OnGetRoutePlanResultListener() {
127 
128             @Override
129             public void onGetWalkingRouteResult(WalkingRouteResult arg0) {
130                 // 获取步行路线规划结果
131             }
132 
133             @Override
134             public void onGetTransitRouteResult(TransitRouteResult arg0) {
135                 // 获取公交换乘路径规划结果
136             }
137 
138             @Override
139             public void onGetDrivingRouteResult(DrivingRouteResult arg0) {
140                 // 获取驾车路线规划结果
141             }
142         };
143         // 设置驾车线路规划检索监听者
144         mSearch.setOnGetRoutePlanResultListener(listener);
145         // 准备检索起、终点信息
146         PlanNode stNode = PlanNode.withLocation(point);
147         LatLng endpoint = new LatLng(121.473605, 31.232176);
148         PlanNode enNode = PlanNode.withLocation(endpoint);
149         mSearch.drivingSearch((new DrivingRoutePlanOption()).from(stNode).to(
150                 enNode));
151     }
152 
153     /**
154      * 显示请求你字符串
155      * 
156      * @param str
157      */
158     public void logMsg(String str) {
159         try {
160             if (mLocationResult != null)
161                 mLocationResult.setText(str);
162         } catch (Exception e) {
163             e.printStackTrace();
164         }
165     }
166 
167     private void InitLocation() {
168         LocationClientOption option = new LocationClientOption();
169         option.setLocationMode(LocationMode.Battery_Saving);// 设置定位模式
170         option.setCoorType("bd09ll");
171         option.setIsNeedAddress(true);
172         mLocationClient.setLocOption(option);
173     }
174 }