暂时只会这种导航，实时显示自己的位置，，求其他更好的方法，或api

有没有更好的方法解决实时显示自己的位置的导航

<?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>

  1 package com.xmb.navigationdemoactivity;  2   3 import java.util.ArrayList;  4 import java.util.List;  5   6 import com.baidu.mapapi.BMapManager;  7 import com.baidu.mapapi.GeoPoint;  8 import com.baidu.mapapi.LocationListener;  9 import com.baidu.mapapi.MKAddrInfo; 10  11 import com.baidu.mapapi.ItemizedOverlay; 12 import com.baidu.mapapi.MKDrivingRouteResult; 13 import com.baidu.mapapi.MKEvent; 14 import com.baidu.mapapi.MKGeneralListener; 15 import com.baidu.mapapi.MKPlanNode; 16 import com.baidu.mapapi.MKPoiResult; 17 import com.baidu.mapapi.MKRoute; 18 import com.baidu.mapapi.MKSearch; 19 import com.baidu.mapapi.MKSearchListener; 20 import com.baidu.mapapi.MKStep; 21 import com.baidu.mapapi.OverlayItem; 22  23 import com.baidu.mapapi.MKTransitRouteResult; 24 import com.baidu.mapapi.MKWalkingRouteResult; 25 import com.baidu.mapapi.MapActivity; 26 import com.baidu.mapapi.MapView; 27 import com.baidu.mapapi.MyLocationOverlay; 28 import com.baidu.mapapi.RouteOverlay; 29  30 import android.graphics.drawable.Drawable; 31 import android.location.Location; 32 import android.os.Bundle; 33 import android.annotation.SuppressLint; 34 import android.app.Activity; 35 import android.util.Log; 36 import android.view.Menu; 37 import android.view.MenuItem; 38 import android.view.View; 39 import android.view.View.OnClickListener; 40 import android.view.Window; 41 import android.widget.*; 42  43 @SuppressLint("ParserError") 44 public class NavigationDemoActivity extends MapActivity { 45     private String mMapKey = "C9DF0F24E9FFCCEB4AF1DA296E8A694B311A3073"; 46     private EditText destinationEditText = null; 47     private Button startNaviButton = null; 48     private MapView mapView = null; 49     private BMapManager mMapManager = null; 50     private MyLocationOverlay myLocationOverlay = null; 51     //onResume时注册此listener，onPause时需要Remove,注意此listener不是Android自带的，是百度API中的 52     private LocationListener locationListener; 53     private MKSearch searchModel; 54     GeoPoint pt; 55      56     @Override 57     public void onCreate(Bundle savedInstanceState) { 58         super.onCreate(savedInstanceState); 59         requestWindowFeature(Window.FEATURE_NO_TITLE); 60         setContentView(R.layout.daohang); 61         destinationEditText = (EditText) this.findViewById(R.id.et_destination); 62         startNaviButton = (Button) this.findViewById(R.id.btn_navi); 63          64         mMapManager = new BMapManager(getApplication()); 65         mMapManager.init(mMapKey, new MyGeneralListener()); 66         mMapManager.getLocationManager().setNoitifyInternal(20, 5); 67         super.initMapActivity(mMapManager); 68          69         mapView = (MapView) this.findViewById(R.id.bmapsView); 70         //设置启用内置的缩放控件 71         mapView.setBuiltInZoomControls(true);   72         //设置在缩放动画过程中也显示overlay,默认为不绘制 73 //        mapView.setDrawOverlayWhenZooming(true); 74         //获取当前位置层 75         myLocationOverlay = new MyLocationOverlay(this, mapView); 76         //将当前位置的层添加到地图底层中 77         mapView.getOverlays().add(myLocationOverlay); 78         locationListener= new LocationListener(){ 79             @Override 80             public void onLocationChanged(Location location) { 81                 // TODO Auto-generated method stub 82                 if (location != null){ 83                     //生成GEO类型坐标并在地图上定位到该坐标标示的地点 84                      85                     Log.i("out","onLocationChanged"); 86                      pt = new GeoPoint((int)(location.getLatitude()*1e6), 87                             (int)(location.getLongitude()*1e6)); 88                      Drawable drawable = getResources().getDrawable(R.drawable.car_green); 89  90                         mapView.getOverlays().add(new MyOverLayItem(drawable)); 91 //                    System.out.println("---"+location.getLatitude() +":"+location.getLongitude()); 92                     mapView.getController().animateTo(pt); 93                 } 94             } 95         }; 96         97        98         //初始化搜索模块 99         searchModel = new MKSearch();100         //设置路线策略为最短距离101         searchModel.setDrivingPolicy(MKSearch.ECAR_DIS_FIRST);102         searchModel.init(mMapManager, new MKSearchListener() {103             //获取驾车路线回调方法104             @Override105             public void onGetDrivingRouteResult(MKDrivingRouteResult res, int error) {106                 // 错误号可参考MKEvent中的定义107                 if (error != 0 || res == null) {108                     Toast.makeText(NavigationDemoActivity.this, "抱歉，未找到结果", Toast.LENGTH_SHORT).show();109                     return;110                 }111                 RouteOverlay routeOverlay = new RouteOverlay(NavigationDemoActivity.this, mapView);112                 // 此处仅展示一个方案作为示例113                 MKRoute route = res.getPlan(0).getRoute(0);114                 int distanceM = route.getDistance();115                 String distanceKm = String.valueOf(distanceM / 1000) +"."+String.valueOf(distanceM % 1000);116                 System.out.println("距离:"+distanceKm+"公里---节点数量:"+route.getNumSteps());117                 for (int i = 0; i < route.getNumSteps(); i++) {118                     MKStep step = route.getStep(i);119                     System.out.println("节点信息："+step.getContent());120                 }121                 routeOverlay.setData(route);122                 mapView.getOverlays().clear();123                 mapView.getOverlays().add(routeOverlay);124                 mapView.invalidate();125                 mapView.getController().animateTo(res.getStart().pt);126             }127             128             //以下两种方式和上面的驾车方案实现方法一样129             @Override130             public void onGetWalkingRouteResult(MKWalkingRouteResult res, int error) {131                 //获取步行路线132             }133             134             @Override135             public void onGetTransitRouteResult(MKTransitRouteResult arg0, int arg1) {136                 //获取公交线路137             }138             139             140             @Override141             public void onGetAddrResult(MKAddrInfo arg0, int arg1) {142             }143             144             @Override145             public void onGetPoiResult(MKPoiResult arg0, int arg1, int arg2) {146             }147         });148         149         startNaviButton.setOnClickListener(new OnClickListener() {150             151             @Override152             public void onClick(View v) {153                 String destination = destinationEditText.getText().toString();154                 155                 //设置起始地（当前位置）156                 MKPlanNode startNode = new MKPlanNode();157                 startNode.pt = pt;158                 //设置目的地159                 MKPlanNode endNode = new MKPlanNode(); 160                 endNode.name = destination;161                 162                 //展开搜索的城市163                 String city = getResources().getString(R.string.beijing);164 //                System.out.println("----"+city+"---"+destination+"---"+pt);165                 searchModel.drivingSearch(city, startNode, city, endNode);166 /*                 mMapManager.getLocationManager().requestLocationUpdates(167                             // 注册定位事件168                             new LocationListener(){169                                 @Override170                                 public void onLocationChanged(Location location) {171                                     // TODO Auto-generated method stub172                                     if (location != null){173                                         Log.i("out","mMapManager_onLocationChanged");174                                         //生成GEO类型坐标并在地图上定位到该坐标标示的地点175                                          pt = new GeoPoint((int)(location.getLatitude()*1e6),176                                                 (int)(location.getLongitude()*1e6));177                                          Drawable drawable = getResources().getDrawable(R.drawable.ic_launcher);178 179                                             mapView.getOverlays().add(new MyOverLayItem(drawable));180 //                                        System.out.println("---"+location.getLatitude() +":"+location.getLongitude());181                                         mapView.getController().animateTo(pt);182                                     }183                                 }184                             })*/185                 //步行路线186 //                searchModel.walkingSearch(city, startNode, city, endNode);187                 //公交路线188 //                searchModel.transitSearch(city, startNode, endNode);189             }190         });191         192     }193     public class MyOverLayItem extends ItemizedOverlay<OverlayItem> {194 195         private List<OverlayItem> list = new ArrayList<OverlayItem>();196         // 定义一组坐标，都是一个double类型定义197 198         199 200         // 用于在地图上标识坐标,用一个图片标注201         public MyOverLayItem(Drawable drawable) {202             super(drawable);203             // TODO Auto-generated constructor stub204             // 第一组数据的在地图上的标注点205             206             list.add(new OverlayItem(pt, "Point1", "Point1"));207             208            populate();//刷新地图的功能209         }210 211         // 返回指定的list集合中每一个坐标212         @Override213         protected OverlayItem createItem(int arg0) {214             // TODO Auto-generated method stub215             return list.get(arg0);216         }217 218         @Override219         public int size() {220             // TODO Auto-generated method stub221             return list.size();222         }223 224         @Override225         public boolean onTap(int i) {226             // TODO Auto-generated method stub227             Toast.makeText(NavigationDemoActivity.this, list.get(i).getSnippet(), 1).show();228 229             return true;230         }231 232     }233  /*   234     class MyLocationListener implements LocationListener {235 236         @Override237         public void onLocationChanged(Location location) {238             // TODO Auto-generated method stub239             if (location != null){240                 //生成GEO类型坐标并在地图上定位到该坐标标示的地点241                  pt = new GeoPoint((int)(location.getLatitude()*1e6),242                         (int)(location.getLongitude()*1e6));243 //                System.out.println("---"+location.getLatitude() +":"+location.getLongitude());244                 mapView.getController().animateTo(pt);245             }246         }247         //    tv1.setText("经度：" + jindu + ",纬度：" + weidu);248             //AllMession =new String[4];249 //            AllMession[0]=jingdu.toString();250 //            AllMession[1]=weidu.toString();251 //            Bundle mydata=new Bundle();252 //        Message msg=new Message();253 //               mydata.putString("Longltude",String.valueOf(jingdu));254 //               mydata.putString("Latitude",String.valueOf(weidu));255 //               mydata.putString("accuracy",Accuray);    256               257 //               msg.setData(mydata);258 //               msg.what=1;259                //Toast.makeText(context, jzdwaddress, Toast.LENGTH_LONG).show();260 //               handler.sendMessage(msg);261             262             263 //            t1=(TextView)(((Activity)context).findViewById(R.id.label_wz));264 //            t1.setText("经度：" + jingdu + "\n纬度：" + weidu);265 //            System.out.println("jindu:"+jingdu+"  "+"weidu:"+weidu);266 //            MKSearch search = new MKSearch();267 //            search.init(mapManager, new MyMKSearchListener());268 //            search.reverseGeocode(new GeoPoint(jingdu, weidu));269 //            270 //            t2=(TextView)(((Activity)context).findViewById(R.id.label_sj));271 //            Calendar cal=Calendar.getInstance();272 //            t2.setText(cal.getTime().toString());273 //            274 //            t3=(TextView)(((Activity)context).findViewById(R.id.label_jd));275 //            t3.setText("1118");276         }277   */  278     @Override279     protected void onResume() {280         mMapManager.getLocationManager().requestLocationUpdates(locationListener);281         myLocationOverlay.enableMyLocation();282         myLocationOverlay.enableCompass(); // 打开指南针283         mMapManager.start();284         super.onResume();285     }286     287     @Override288     protected void onPause() {289         mMapManager.getLocationManager().removeUpdates(locationListener);290         myLocationOverlay.disableMyLocation();//显示当前位置291         myLocationOverlay.disableCompass(); // 关闭指南针292         mMapManager.stop();293         super.onPause();294     }295 296     @Override297     protected boolean isRouteDisplayed() {298         // TODO Auto-generated method stub299         return false;300     }301     302     // 常用事件监听，用来处理通常的网络错误，授权验证错误等303     class MyGeneralListener implements MKGeneralListener {304             @Override305             public void onGetNetworkState(int iError) {306                 Log.d("MyGeneralListener", "onGetNetworkState error is "+ iError);307                 Toast.makeText(NavigationDemoActivity.this, "您的网络出错啦！",308                         Toast.LENGTH_LONG).show();309             }310 311             @Override312             public void onGetPermissionState(int iError) {313                 Log.d("MyGeneralListener", "onGetPermissionState error is "+ iError);314                 if (iError ==  MKEvent.ERROR_PERMISSION_DENIED) {315                     // 授权Key错误：316                     Toast.makeText(NavigationDemoActivity.this, 317                             "请在BMapApiDemoApp.java文件输入正确的授权Key！",318                             Toast.LENGTH_LONG).show();319                 }320             }321         }322 }

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