Android GPS室内定位问题的解决方法（location为null）

<service
 android:name="com.baidu.location.f"
 android:enabled="true"
 android:process=":remote" >
</service>
<meta-data android:name="com.baidu.lbsapi.API_KEY" android:value="xxxxx " />
 <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
 <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

public class LocationUtil {
 private final static boolean DEBUG = true;
 private final static String TAG = "LocationUtil";
 private static LocationUtil mInstance;
 private BDLocation mLocation = null;
 private MLocation mBaseLocation = new MLocation();

 public static LocationUtil getInstance(Context context) {
 if (mInstance == null) {
 mInstance = new LocationUtil(context);
 }
 return mInstance;
 }

 Context mContext;
 String mProvider;
 public BDLocationListener myListener = new MyLocationListener();
 private LocationClient mLocationClient;
 
 public LocationUtil(Context context) {
 mLocationClient = new LocationClient(context.getApplicationContext());
 initParams();
 mLocationClient.registerLocationListener(myListener);
 }

 public void startMonitor() {
 if (DEBUG) Log.d(TAG, "start monitor location");
 if (!mLocationClient.isStarted()) {
 mLocationClient.start();
 }
 if (mLocationClient != null && mLocationClient.isStarted()) {
 mLocationClient.requestLocation();
 } else {
 Log.d("LocSDK3", "locClient is null or not started");
 }
 }

 public void stopMonitor() {
 if (DEBUG) Log.d(TAG, "stop monitor location");
 if (mLocationClient != null && mLocationClient.isStarted()) {
 mLocationClient.stop();
 }
 }
 
 public BDLocation getLocation() {
 if (DEBUG) Log.d(TAG, "get location");
 return mLocation;
 }
 
 public MLocation getBaseLocation() {
 if (DEBUG) Log.d(TAG, "get location");
 return mBaseLocation;
 }
 
 private void initParams() {
 LocationClientOption option = new LocationClientOption();
 option.setOpenGps(true);
 //option.setPriority(LocationClientOption.NetWorkFirst);
 option.setAddrType("all");//返回的定位结果包含地址信息
 option.setCoorType("bd09ll");//返回的定位结果是百度经纬度,默认值gcj02
 option.setScanSpan(5000);//设置发起定位请求的间隔时间为5000ms
 option.disableCache(true);//禁止启用缓存定位
 option.setPoiNumber(5); //最多返回POI个数 
 option.setPoiDistance(1000); //poi查询距离 
 option.setPoiExtraInfo(true); //是否需要POI的电话和地址等详细信息 
 mLocationClient.setLocOption(option);
 }


 public class MyLocationListener implements BDLocationListener {
 @Override
 public void onReceiveLocation(BDLocation location) {
 if (location == null) {
 return ;
 }
 mLocation = location;
 mBaseLocation.latitude = mLocation.getLatitude();
 mBaseLocation.longitude = mLocation.getLongitude();
 
 StringBuffer sb = new StringBuffer(256);
 sb.append("time : ");
 sb.append(location.getTime());
 sb.append("\nerror code : ");
 sb.append(location.getLocType());
 sb.append("\nlatitude : ");
 sb.append(location.getLatitude());
 sb.append("\nlontitude : ");
 sb.append(location.getLongitude());
 sb.append("\nradius : ");
 sb.append(location.getRadius());
 sb.append("\ncity : ");
 sb.append(location.getCity());
 if (location.getLocType() == BDLocation.TypeGpsLocation){
 sb.append("\nspeed : ");
 sb.append(location.getSpeed());
 sb.append("\nsatellite : ");
 sb.append(location.getSatelliteNumber());
 } else if (location.getLocType() == BDLocation.TypeNetWorkLocation){
 sb.append("\naddr : ");
 sb.append(location.getAddrStr());
 }
 if (DEBUG) Log.d(TAG, "" + sb);
 }

 public void onReceivePoi(BDLocation poiLocation) {
 }
 }
 
 public class MLocation {
 public double latitude;
 public double longitude;
 }
}