public class MyApplication extends Application{
    public LocationClient mLocationClient = null;
    public GeofenceClient mGeofenceClient;
    public MyLocationListenner myListener = new MyLocationListenner();
    public static String TAG = "MyApplication";
    private static MyApplication mInstance = null
 
;
    @Override
    public void onCreate(){
        mInstance = this;
        mLocationClient = new LocationClient(this);
        /**
         * 專案的key，自己到官網申請 http://lbsyun.baidu.com/apiconsole/key
         */
        mLocationClient.setAK("你的應用Key");
        mLocationClient.registerLocationListener(myListener);
        mGeofenceClient 
 
= new GeofenceClient(this);
        super.onCreate();
        Log.d(TAG, "... Application onCreate... pid=" + Process.myPid());
    }
    
    public static  MyApplication  getInstance(){
        return mInstance;
    }

    /**
     * 停止定位
     */
    public void stopLocationClient(){
        
 
if (mLocationClient != null && mLocationClient.isStarted()){
            mLocationClient.stop();
        } 
    }

    /**
     * 發起定位
     */
    public void requestLocationInfo(){
        setLocationOption();
        if (mLocationClient != null && !mLocationClient.isStarted()){
            mLocationClient.start();
        }
        if (mLocationClient != null && mLocationClient.isStarted()){
            mLocationClient.requestLocation();
        } 
    }

    /**
     *  設定百度地圖的相關引數
     */
    private void setLocationOption(){
        LocationClientOption option = new LocationClientOption();
        option.setOpenGps(true); // 開啟gps
        option.setCoorType("bd09ll"); // 設定座標型別
        option.setServiceName("com.baidu.location.service_v2.9");
        option.setPoiExtraInfo(true);
        option.setAddrType("all");
        option.setPoiNumber(10);
        option.disableCache(true);
        mLocationClient.setLocOption(option);
    }

    /**
     * 監聽函式，有更新位置的時候，格式化成字串，輸出到螢幕中
     */
    public class MyLocationListenner implements BDLocationListener
    {
        @Override
        public void onReceiveLocation(BDLocation location){
            if (location == null){
                sendBroadCast("定位失敗!");
                return;
            }
            sendBroadCast(location.getAddrStr());
        }
        public void onReceivePoi(BDLocation poiLocation){
            if (poiLocation == null){
                sendBroadCast("定位失敗!");
                return;
            }
            sendBroadCast(poiLocation.getAddrStr());
        }
    }
    
    /**
     * 得到傳送廣播
     * @param address
     */
    public void sendBroadCast(String address){
                stopLocationClient();
        Intent intent = new Intent(MainActivity.LOCATION_BCR);
        intent.putExtra("address", address);
        sendBroadcast(intent);
    }
}