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>

package com.xmb.navigationdemoactivity;

import java.util.ArrayList;
import java.util.List;

import com.baidu.mapapi.BMapManager;
import com.baidu.mapapi.GeoPoint;
import com.baidu.mapapi.LocationListener;
import com.baidu.mapapi.MKAddrInfo;

import com.baidu.mapapi.ItemizedOverlay;
import com.baidu.mapapi.MKDrivingRouteResult;
import com.baidu.mapapi.MKEvent;
import com.baidu.mapapi.MKGeneralListener;
import com.baidu.mapapi.MKPlanNode;
import com.baidu.mapapi.MKPoiResult;
import com.baidu.mapapi.MKRoute;
import com.baidu.mapapi.MKSearch;
import com.baidu.mapapi.MKSearchListener;
import com.baidu.mapapi.MKStep;
import com.baidu.mapapi.OverlayItem;

import com.baidu.mapapi.MKTransitRouteResult;
import com.baidu.mapapi.MKWalkingRouteResult;
import com.baidu.mapapi.MapActivity;
import com.baidu.mapapi.MapView;
import com.baidu.mapapi.MyLocationOverlay;
import com.baidu.mapapi.RouteOverlay;

import android.graphics.drawable.Drawable;
import android.location.Location;
import android.os.Bundle;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.*;

@SuppressLint("ParserError")
public class NavigationDemoActivity extends MapActivity {
    private String mMapKey = "C9DF0F24E9FFCCEB4AF1DA296E8A694B311A3073";
    private EditText destinationEditText = null;
    private Button startNaviButton = null;
    private MapView mapView = null;
    private BMapManager mMapManager = null;
    private MyLocationOverlay myLocationOverlay = null;
    //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
    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.daohang);
        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());
        mMapManager.getLocationManager().setNoitifyInternal(20, 5);
        super.initMapActivity(mMapManager);
        
        mapView = (MapView) this.findViewById(R.id.bmapsView);
        //设置启用内置的缩放控件
        mapView.setBuiltInZoomControls(true);  
        //设置在缩放动画过程中也显示overlay,默认为不绘制
//        mapView.setDrawOverlayWhenZooming(true);
        //获取当前位置层
        myLocationOverlay = new MyLocationOverlay(this, mapView);
        //将当前位置的层添加到地图底层中
        mapView.getOverlays().add(myLocationOverlay);
        locationListener= new LocationListener(){
            @Override
            public void onLocationChanged(Location location) {
                // TODO Auto-generated method stub
                if (location != null){
                    //生成GEO类型坐标并在地图上定位到该坐标标示的地点
                    
                    Log.i("out","onLocationChanged");
                     pt = new GeoPoint((int)(location.getLatitude()*1e6),
                            (int)(location.getLongitude()*1e6));
                     Drawable drawable = getResources().getDrawable(R.drawable.car_green);

                        mapView.getOverlays().add(new MyOverLayItem(drawable));
//                    System.out.println("---"+location.getLatitude() +":"+location.getLongitude());
                    mapView.getController().animateTo(pt);
                }
            }
        };
       
      
        //初始化搜索模块
        searchModel = new MKSearch();
        //设置路线策略为最短距离
        searchModel.setDrivingPolicy(MKSearch.ECAR_DIS_FIRST);
        searchModel.init(mMapManager, new MKSearchListener() {
            //获取驾车路线回调方法
            @Override
            public void onGetDrivingRouteResult(MKDrivingRouteResult res, int error) {
                // 错误号可参考MKEvent中的定义
                if (error != 0 || res == null) {
                    Toast.makeText(NavigationDemoActivity.this, "抱歉，未找到结果", Toast.LENGTH_SHORT).show();
                    return;
                }
                RouteOverlay routeOverlay = new RouteOverlay(NavigationDemoActivity.this, mapView);
                // 此处仅展示一个方案作为示例
                MKRoute route = res.getPlan(0).getRoute(0);
                int distanceM = route.getDistance();
                String distanceKm = String.valueOf(distanceM / 1000) +"."+String.valueOf(distanceM % 1000);
                System.out.println("距离:"+distanceKm+"公里---节点数量:"+route.getNumSteps());
                for (int i = 0; i < route.getNumSteps(); i++) {
                    MKStep step = route.getStep(i);
                    System.out.println("节点信息："+step.getContent());
                }
                routeOverlay.setData(route);
                mapView.getOverlays().clear();
                mapView.getOverlays().add(routeOverlay);
                mapView.invalidate();
                mapView.getController().animateTo(res.getStart().pt);
            }
            
            //以下两种方式和上面的驾车方案实现方法一样
            @Override
            public void onGetWalkingRouteResult(MKWalkingRouteResult res, int error) {
                //获取步行路线
            }
            
            @Override
            public void onGetTransitRouteResult(MKTransitRouteResult arg0, int arg1) {
                //获取公交线路
            }
            
            
            @Override
            public void onGetAddrResult(MKAddrInfo 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();
                
                //设置起始地（当前位置）
                MKPlanNode startNode = new MKPlanNode();
                startNode.pt = pt;
                //设置目的地
                MKPlanNode endNode = new MKPlanNode(); 
                endNode.name = destination;
                
                //展开搜索的城市
                String city = getResources().getString(R.string.beijing);
//                System.out.println("----"+city+"---"+destination+"---"+pt);
                searchModel.drivingSearch(city, startNode, city, endNode);
/*                 mMapManager.getLocationManager().requestLocationUpdates(
                            // 注册定位事件
                            new LocationListener(){
                                @Override
                                public void onLocationChanged(Location location) {
                                    // TODO Auto-generated method stub
                                    if (location != null){
                                        Log.i("out","mMapManager_onLocationChanged");
                                        //生成GEO类型坐标并在地图上定位到该坐标标示的地点
                                         pt = new GeoPoint((int)(location.getLatitude()*1e6),
                                                (int)(location.getLongitude()*1e6));
                                         Drawable drawable = getResources().getDrawable(R.drawable.ic_launcher);

                                            mapView.getOverlays().add(new MyOverLayItem(drawable));
//                                        System.out.println("---"+location.getLatitude() +":"+location.getLongitude());
                                        mapView.getController().animateTo(pt);
                                    }
                                }
                            })*/
                //步行路线
//                searchModel.walkingSearch(city, startNode, city, endNode);
                //公交路线
//                searchModel.transitSearch(city, startNode, endNode);
            }
        });
        
    }
    public class MyOverLayItem extends ItemizedOverlay<OverlayItem> {

        private List<OverlayItem> list = new ArrayList<OverlayItem>();
        // 定义一组坐标，都是一个double类型定义

        

        // 用于在地图上标识坐标,用一个图片标注
        public MyOverLayItem(Drawable drawable) {
            super(drawable);
            // TODO Auto-generated constructor stub
            // 第一组数据的在地图上的标注点
            
            list.add(new OverlayItem(pt, "Point1", "Point1"));
            
           populate();//刷新地图的功能
        }

        // 返回指定的list集合中每一个坐标
        @Override
        protected OverlayItem createItem(int arg0) {
            // TODO Auto-generated method stub
            return list.get(arg0);
        }

        @Override
        public int size() {
            // TODO Auto-generated method stub
            return list.size();
        }

        @Override
        public boolean onTap(int i) {
            // TODO Auto-generated method stub
            Toast.makeText(NavigationDemoActivity.this, list.get(i).getSnippet(), 1).show();

            return true;
        }

    }
 /*   
    class MyLocationListener implements LocationListener {

        @Override
        public void onLocationChanged(Location location) {
            // TODO Auto-generated method stub
            if (location != null){
                //生成GEO类型坐标并在地图上定位到该坐标标示的地点
                 pt = new GeoPoint((int)(location.getLatitude()*1e6),
                        (int)(location.getLongitude()*1e6));
//                System.out.println("---"+location.getLatitude() +":"+location.getLongitude());
                mapView.getController().animateTo(pt);
            }
        }
        //    tv1.setText("经度：" + jindu + ",纬度：" + weidu);
            //AllMession =new String[4];
//            AllMession[0]=jingdu.toString();
//            AllMession[1]=weidu.toString();
//            Bundle mydata=new Bundle();
//        Message msg=new Message();
//               mydata.putString("Longltude",String.valueOf(jingdu));
//               mydata.putString("Latitude",String.valueOf(weidu));
//               mydata.putString("accuracy",Accuray);    
              
//               msg.setData(mydata);
//               msg.what=1;
               //Toast.makeText(context, jzdwaddress, Toast.LENGTH_LONG).show();
//               handler.sendMessage(msg);
            
            
//            t1=(TextView)(((Activity)context).findViewById(R.id.label_wz));
//            t1.setText("经度：" + jingdu + "\n纬度：" + weidu);
//            System.out.println("jindu:"+jingdu+"  "+"weidu:"+weidu);
//            MKSearch search = new MKSearch();
//            search.init(mapManager, new MyMKSearchListener());
//            search.reverseGeocode(new GeoPoint(jingdu, weidu));
//            
//            t2=(TextView)(((Activity)context).findViewById(R.id.label_sj));
//            Calendar cal=Calendar.getInstance();
//            t2.setText(cal.getTime().toString());
//            
//            t3=(TextView)(((Activity)context).findViewById(R.id.label_jd));
//            t3.setText("1118");
        }
  */  
    @Override
    protected void onResume() {
        mMapManager.getLocationManager().requestLocationUpdates(locationListener);
        myLocationOverlay.enableMyLocation();
        myLocationOverlay.enableCompass(); // 打开指南针
        mMapManager.start();
        super.onResume();
    }
    
    @Override
    protected void onPause() {
        mMapManager.getLocationManager().removeUpdates(locationListener);
        myLocationOverlay.disableMyLocation();//显示当前位置
        myLocationOverlay.disableCompass(); // 关闭指南针
        mMapManager.stop();
        super.onPause();
    }

    @Override
    protected boolean isRouteDisplayed() {
        // TODO Auto-generated method stub
        return false;
    }
    
    // 常用事件监听，用来处理通常的网络错误，授权验证错误等
    class MyGeneralListener implements MKGeneralListener {
            @Override
            public void onGetNetworkState(int iError) {
                Log.d("MyGeneralListener", "onGetNetworkState error is "+ iError);
                Toast.makeText(NavigationDemoActivity.this, "您的网络出错啦！",
                        Toast.LENGTH_LONG).show();
            }

            @Override
            public void onGetPermissionState(int iError) {
                Log.d("MyGeneralListener", "onGetPermissionState error is "+ iError);
                if (iError ==  MKEvent.ERROR_PERMISSION_DENIED) {
                    // 授权Key错误：
                    Toast.makeText(NavigationDemoActivity.this, 
                            "请在BMapApiDemoApp.java文件输入正确的授权Key！",
                            Toast.LENGTH_LONG).show();
                }
            }
        }
}