public class NavigationDemoActivity extends MapActivity {   private String mMapKey = "注冊(cè)自己的key";   private EditText destinationEditText = null;   private Button startNaviButton = null;   private MapView mapView = null;   private BMapManager mMapManager = null;   private MyLocationOverlay myLocationOverlay = null;   //onResume時(shí)注冊(cè)此listener，onPause時(shí)需要Remove,注意此listener不是Android自帶的，是百度API中的   private LocationListener locationListener;   private MKSearch searchModel;   GeoPoint pt;   @Override   public void onCreate(Bundle savedInstanceState) {     super.onCreate(savedInstanceState);     requestWindowFeature(Window.FEATURE_NO_TITLE);     setContentView(R.layout.main);     destinationEditText = (EditText) this.findViewById(R.id.et_destination);     startNaviButton = (Button) this.findViewById(R.id.btn_navi);     mMapManager = new BMapManager(getApplication());     mMapManager.init(mMapKey, new MyGeneralListener());     super.initMapActivity(mMapManager);     mapView = (MapView) this.findViewById(R.id.bmapsView);     //設(shè)置啟用內(nèi)置的縮放控件     mapView.setBuiltInZoomControls(true);      //設(shè)置在縮放動(dòng)畫(huà)過(guò)程中也顯示overlay,默認(rèn)為不繪制 //    mapView.setDrawOverlayWhenZooming(true);     //獲取當(dāng)前位置層     myLocationOverlay = new MyLocationOverlay(this, mapView);     //將當(dāng)前位置的層添加到地圖底層中     mapView.getOverlays().add(myLocationOverlay);     // 注冊(cè)定位事件     locationListener = new LocationListener(){       @Override       public void onLocationChanged(Location location) {         if (location != null){           //生成GEO類(lèi)型坐標(biāo)并在地圖上定位到該坐標(biāo)標(biāo)示的地點(diǎn)            pt = new GeoPoint((int)(location.getLatitude()*1e6),               (int)(location.getLongitude()*1e6)); //         System.out.println("---"+location.getLatitude() +":"+location.getLongitude());           mapView.getController().animateTo(pt);         }       }     };     //初始化搜索模塊     searchModel = new MKSearch();     //設(shè)置路線策略為最短距離     searchModel.setDrivingPolicy(MKSearch.ECAR_DIS_FIRST);     searchModel.init(mMapManager, new MKSearchListener() {       //獲取駕車(chē)路線回調(diào)方法       @Override       public void onGetDrivingRouteResult(MKDrivingRouteResult res, int error) {         // 錯(cuò)誤號(hào)可參考MKEvent中的定義         if (error != 0 || res == null) {           Toast.makeText(NavigationDemoActivity.this, "抱歉，未找到結(jié)果", Toast.LENGTH_SHORT).show();           return;         }         RouteOverlay routeOverlay = new RouteOverlay(NavigationDemoActivity.this, mapView);         // 此處僅展示一個(gè)方案作為示例         MKRoute route = res.getPlan(0).getRoute(0);         int distanceM = route.getDistance();         String distanceKm = String.valueOf(distanceM / 1000) +"."+String.valueOf(distanceM % 1000);         System.out.println("距離:"+distanceKm+"公里---節(jié)點(diǎn)數(shù)量:"+route.getNumSteps());         for (int i = 0; i < route.getNumSteps(); i++) {           MKStep step = route.getStep(i);           System.out.println("節(jié)點(diǎn)信息："+step.getContent());         }         routeOverlay.setData(route);         mapView.getOverlays().clear();         mapView.getOverlays().add(routeOverlay);         mapView.invalidate();         mapView.getController().animateTo(res.getStart().pt);       }       //以下兩種方式和上面的駕車(chē)方案實(shí)現(xiàn)方法一樣       @Override       public void onGetWalkingRouteResult(MKWalkingRouteResult res, int error) {         //獲取步行路線       }       @Override       public void onGetTransitRouteResult(MKTransitRouteResult arg0, int arg1) {         //獲取公交線路       }       @Override       public void onGetBusDetailResult(MKBusLineResult arg0, int arg1) {       }       @Override       public void onGetAddrResult(MKAddrInfo arg0, int arg1) {       }       @Override       public void onGetSuggestionResult(MKSuggestionResult arg0, int arg1) {       }       @Override       public void onGetPoiResult(MKPoiResult arg0, int arg1, int arg2) {       }     });     startNaviButton.setOnClickListener(new OnClickListener() {       @Override       public void onClick(View v) {         String destination = destinationEditText.getText().toString();         //設(shè)置起始地（當(dāng)前位置）         MKPlanNode startNode = new MKPlanNode();         startNode.pt = pt;         //設(shè)置目的地         MKPlanNode endNode = new MKPlanNode();          endNode.name = destination;         //展開(kāi)搜索的城市         String city = getResources().getString(R.string.beijing); //       System.out.println("----"+city+"---"+destination+"---"+pt);         searchModel.drivingSearch(city, startNode, city, endNode);         //步行路線 //       searchModel.walkingSearch(city, startNode, city, endNode);         //公交路線 //       searchModel.transitSearch(city, startNode, endNode);       }     });   }   @Override   protected void onResume() {     mMapManager.getLocationManager().requestLocationUpdates(locationListener);     myLocationOverlay.enableMyLocation();     myLocationOverlay.enableCompass(); // 打開(kāi)指南針     mMapManager.start();     super.onResume();   }   @Override   protected void onPause() {     mMapManager.getLocationManager().removeUpdates(locationListener);     myLocationOverlay.disableMyLocation();//顯示當(dāng)前位置     myLocationOverlay.disableCompass(); // 關(guān)閉指南針     mMapManager.stop();     super.onPause();   }   @Override   protected boolean isRouteDisplayed() {     // TODO Auto-generated method stub     return false;   }   // 常用事件監(jiān)聽(tīng)，用來(lái)處理通常的網(wǎng)絡(luò)錯(cuò)誤，授權(quán)驗(yàn)證錯(cuò)誤等   class MyGeneralListener implements MKGeneralListener {       @Override       public void onGetNetworkState(int iError) {         Log.d("MyGeneralListener", "onGetNetworkState error is "+ iError);         Toast.makeText(NavigationDemoActivity.this, "您的網(wǎng)絡(luò)出錯(cuò)啦！",             Toast.LENGTH_LONG).show();       }       @Override       public void onGetPermissionState(int iError) {         Log.d("MyGeneralListener", "onGetPermissionState error is "+ iError);         if (iError == MKEvent.ERROR_PERMISSION_DENIED) {           // 授權(quán)Key錯(cuò)誤：           Toast.makeText(NavigationDemoActivity.this,                "請(qǐng)?jiān)贐MapApiDemoApp.java文件輸入正確的授權(quán)Key！",               Toast.LENGTH_LONG).show();         }       }     } } 

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"   android:layout_width="fill_parent"   android:layout_height="fill_parent"   android:orientation="vertical" >   <LinearLayout     android:layout_width="fill_parent"     android:layout_height="wrap_content"     android:orientation="horizontal" >     <TextView       android:layout_width="wrap_content"       android:layout_height="wrap_content"       android:textSize="18sp"       android:text="Destination：" />     <EditText       android:id="@+id/et_destination"       android:layout_width="fill_parent"       android:layout_height="wrap_content" />   </LinearLayout>   <Button      android:id="@+id/btn_navi"     android:layout_width="fill_parent"       android:layout_height="wrap_content"       android:text="Start navigate"/>   <com.baidu.mapapi.MapView     android:id="@+id/bmapsView"     android:layout_width="fill_parent"     android:layout_height="fill_parent"     android:clickable="true" /> </LinearLayout> 

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"   package="com.ericssonlabs"   android:versionCode="1"   android:versionName="1.0" >   <uses-sdk android:minSdkVersion="8" />   <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>   <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>   <uses-permission android:name="android.permission.INTERNET"></uses-permission>   <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>   <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission>    <uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission>   <supports-screens android:largeScreens="true"     android:normalScreens="true" android:smallScreens="true"     android:resizeable="true" android:anyDensity="true"/>   <uses-sdk android:minSdkVersion="3"></uses-sdk>   <application     android:icon="@drawable/ic_launcher"     android:label="@string/app_name" >     <activity       android:name=".NavigationDemoActivity"       android:label="@string/app_name" >       <intent-filter>         <action android:name="android.intent.action.MAIN" />         <category android:name="android.intent.category.LAUNCHER" />       </intent-filter>     </activity>   </application> </manifest>