Android百度地图之驾车路线的搜索

 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.MapController;  import com.baidu.mapapi.MapView;  import com.baidu.mapapi.PoiOverlay;  import com.baidu.mapapi.RouteOverlay;    import android.os.Bundle;  import android.app.Activity;  import android.view.Menu;  import android.widget.Toast;    public class MainActivity extends MapActivity {     private MapView mapView;//百度地图的相关控件   private BMapManager bMapManager;//加载地图的引擎   private String keyString = "04763B1D8C925195965E838C6E59DB767DAE4BA7";//百度地图的key   private MapController mapController;//在百度地图上添加一些控件,比如放大或缩小控件      private MKSearch mkSearch;   private MKPlanNode start;   private MKPlanNode end;      @Override   protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.main);        mapView = (MapView) findViewById(R.id.bmapView);    bMapManager = new BMapManager(MainActivity.this);        //必须要加载key    bMapManager.init(keyString, new MKGeneralListener() {          @Override     public void onGetPermissionState(int arg0) {      if(arg0 == 300){       Toast.makeText(MainActivity.this, "输入的key有误,请核实...", 1).show();      }     }          @Override     public void onGetNetworkState(int arg0) {      // TODO Auto-generated method stub           }    });        initMapActivity(bMapManager);    mapView.setBuiltInZoomControls(true);//表示可以设置缩放功能    mapController = mapView.getController();    mapController.setZoom(12);//设置缩放级别      mkSearch = new MKSearch();    mkSearch.init(bMapManager, new MySearchListener());        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.setDrivingPolicy(MKSearch.EBUS_TIME_FIRST);    mkSearch.drivingSearch(null, start, null, end);   }     public class MySearchListener implements MKSearchListener{      @Override    public void onGetAddrResult(MKAddrInfo arg0, int arg1) {     // TODO Auto-generated method stub         }      @Override    public void onGetBusDetailResult(MKBusLineResult arg0, int arg1) {     // TODO Auto-generated method stub         }      @Override    public void onGetDrivingRouteResult(MKDrivingRouteResult arg0, int arg1) {     if(arg0 == null){      return ;     }          RouteOverlay routeOverlay = new RouteOverlay(MainActivity.this, mapView);     routeOverlay.setData(arg0.getPlan(0).getRoute(0));//选择第一条搜索方案中的第一条路线..     mapView.getOverlays().add(routeOverlay);     mapView.invalidate();    }      @Override    public void onGetPoiResult(MKPoiResult result, int type, int iError) {     if(result == null){      return ;     }          PoiOverlay poiOverlay = new PoiOverlay(MainActivity.this, mapView);     poiOverlay.setData(result.getAllPoi());//找到所有符合条件的点     mapView.getOverlays().add(poiOverlay);     mapView.invalidate();    }      @Override    public void onGetSuggestionResult(MKSuggestionResult arg0, int arg1) {     // TODO Auto-generated method stub         }      @Override    public void onGetTransitRouteResult(MKTransitRouteResult arg0, int arg1) {     // TODO Auto-generated method stub         }      @Override    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() {    // TODO Auto-generated method stub    return false;   }   @Override   public boolean onCreateOptionsMenu(Menu menu) {    // Inflate the menu; this adds items to the action bar if it is present.    getMenuInflater().inflate(R.menu.main, menu);    return true;   }    }