public BMapManager mapManager = null;

static MapApplication app;

public String mStrKey = "你申请的key值";

@Override

public void onCreate() {

mapManager = new BMapManager(this);

mapManager.init(mStrKey, new MyGeneralListener());

}

@Override

//建议在您app的退出之前调用mapadpi的destroy()函数，避免重复初始化带来的时间消耗

public void onTerminate() {

// TODO Auto-generated method stub

if(mapManager != null)

{

mapManager.destroy();

mapManager = null;

}

super.onTerminate();

}

static class MyGeneralListener implements MKGeneralListener{

@Override

public void onGetNetworkState(int arg0) {

Toast.makeText(MapApplication.app.getApplicationContext(), "您的网络出错啦！",

Toast.LENGTH_LONG).show();

}

@Override

public void onGetPermissionState(int iError) {

if (iError ==  MKEvent.ERROR_PERMISSION_DENIED) {

// 授权Key错误：

Toast.makeText(MapApplication.app.getApplicationContext(),"您的授权Key不正确！",

Toast.LENGTH_LONG).show();

}

}

}

5、接下来就是按照百度api写定位代码了，使用handler机制去添加定位图层,需要说明的都在注释上了。

private BMapManager mBMapMan = null;

private MapView mMapView = null;

private MapController bMapController;

private MKLocationManager mkLocationManager;

private MKSearch mkSearch;

private TextView address_view;   //定位到的位置信息

private ProgressDialog dialog;

private List hotelList;

private int distance = 1000;  //查询的范围(单位：m)

Handler handler = new Handler(){

@Override

public void handleMessage(Message msg) {

double lat = msg.getData().getDouble("lat");

double lon = msg.getData().getDouble("lon");

if(lat!=0&&lon!=0){

GeoPoint point = new GeoPoint(

(int) (lat * 1E6),

(int) (lon * 1E6));

bMapController.animateTo(point);  //设置地图中心点

bMapController.setZoom(15);

mkSearch.reverseGeocode(point);   //解析地址(异步方法)

MyLocationOverlay myLoc = new MyLocationOverlayFromMap(ShowMapAct.this,mMapView);

myLoc.enableMyLocation();   // 启用定位

myLoc.enableCompass();      // 启用指南针

mMapView.getOverlays().add(myLoc);

}else{

Toast.makeText(ShowMapAct.this, "没有加载到您的位置", Toast.LENGTH_LONG).show();

}

if(hotelList!=null){

Drawable marker = getResources().getDrawable(R.drawable.iconmarka);  //设置marker

marker.setBounds(0, 0, marker.getIntrinsicWidth(), marker.getIntrinsicHeight());   //为maker定义位置和边界

mMapView.getOverlays().add(new OverItemList(marker,hotelList,ShowMapAct.this,bMapController));

}else if(hotelList==null&&lat!=0&&lon!=0){

Toast.makeText(ShowMapAct.this, "网络异常，没有获取到酒店信息。", Toast.LENGTH_LONG).show();

}

if(dialog!=null)  dialog.dismiss();

}

};

@Override

protected void onCreate(Bundle savedInstanceState) {

distance = getIntent().getExtras().getInt("distance");   //获取查询范围

super.onCreate(savedInstanceState);

setContentView(R.layout.location);

mMapView = (MapView)findViewById(R.id.bmapsView);   //初始化一个mapView  存放Map

init();  //初始化地图管理器

super.initMapActivity(mBMapMan);

address_view = (TextView)findViewById(R.id.myLocation_id);

SpannableStringBuilder style = new SpannableStringBuilder(String.format(getResources().getString(R.string.location_text),"位置不详"));

style.setSpan(new ForegroundColorSpan(Color.RED), 5, style.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

address_view.setText(style);

Button location_button = (Button)findViewById(R.id.location_button_id);

location_button.setOnClickListener(new View.OnClickListener(){

@Override

public void onClick(View v) {

dialog = ProgressDialog.show(ShowMapAct.this, "", "数据加载中，请稍后.....");

new Thread(new MyThread()).start();

}

});

mkSearch = new MKSearch();   //初始化一个MKSearch，根据location解析详细地址

mkSearch.init(mBMapMan, this);

mMapView.setBuiltInZoomControls(true);   //启用内置的缩放控件

bMapController = mMapView.getController();

GeoPoint defaultPoint = new GeoPoint((int) (39.920934 * 1E6),(int) (116.412817 * 1E6));  //用给定的经纬度构造一个GeoPoint，单位是微度 (度 * 1E6)

bMapController.setCenter(defaultPoint);  //设置地图中心点

bMapController.setZoom(12);  //设置地图zoom级别

mkLocationManager = mBMapMan.getLocationManager();

}

/**

* 初始化地图管理器BMapManager

*/

public void init(){

MapApplication app = (MapApplication)getApplication();

if (app.mapManager == null) {

app.mapManager = new BMapManager(getApplication());

app.mapManager.init(app.mStrKey, new MapApplication.MyGeneralListener());

}

mBMapMan = app.mapManager;

}

@Override

protected void onDestroy() {

MapApplication app = (MapApplication)getApplication();

if (mBMapMan != null) {

mBMapMan.destroy();

app.mapManager.destroy();

app.mapManager = null;

mBMapMan = null;

}

super.onDestroy();

}

@Override

protected void onPause() {

if (mBMapMan != null) {

// 终止百度地图API

mBMapMan.stop();

}

super.onPause();

}

@Override

protected void onResume() {

if (mBMapMan != null) {

// 开启百度地图API

mBMapMan.start();

}

super.onResume();

}

@Override

protected boolean isRouteDisplayed() {

return false;

}

@Override

public void onGetAddrResult(MKAddrInfo result, int iError) {

if(result==null) return;

SpannableStringBuilder style = new SpannableStringBuilder(String.format(getResources().getString(R.string.location_text),result.strAddr));

style.setSpan(new ForegroundColorSpan(Color.RED), 5, style.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

address_view.setText(style);

if(dialog!=null) dialog.dismiss();

}

@Override

public void onGetDrivingRouteResult(MKDrivingRouteResult arg0, int arg1) {}

@Override

public void onGetPoiResult(MKPoiResult arg0, int arg1, int arg2) {}

@Override

public void onGetTransitRouteResult(MKTransitRouteResult arg0, int arg1) {}

@Override

public void onGetWalkingRouteResult(MKWalkingRouteResult arg0, int arg1) {}

/**

* 重新定位，加载数据

* @author Administrator

*

*/

class MyThread implements Runnable{

@Override

public void run() {

/**

* 最重要的就是这个玩意

* 由于LocationListener获取第一个位置修正的时间会很长，为了避免用户等待，

* 在LocationListener获取第一个更精确的位置之前，应当使用getLocationInfo() 获取一个缓存的位置

*/

Location location = mkLocationManager.getLocationInfo();

double lat = 0d,lon = 0d;

if(location!=null){   //定位到位置

String coordinate = location.getLatitude()+","+location.getLongitude();

HotelRemoteData hotelData = new HotelRemoteData();

/**

* 远程获取酒店列表数据

*/

hotelList = hotelData.getHotelToMap(coordinate,distance);

lat = location.getLatitude();

lon = location.getLongitude();

}

Message msg = new Message();

Bundle data = new Bundle();

data.putDouble("lat", lat);

data.putDouble("lon", lon);

msg.setData(data);

handler.sendMessage(msg);

}

}