关于定位的问题，整的自己快疯了，googlemap问题

public class CurrentLocation extends Activity {

    /** Called when the activity is first created. */

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        LocationManager locationManager;

        String serviceName = Context.LOCATION_SERVICE;

        locationManager = (LocationManager)getSystemService(serviceName);

        //String provider = LocationManager.GPS_PROVIDER;

        

        Criteria criteria = new Criteria();

        criteria.setAccuracy(Criteria.ACCURACY_FINE);

        criteria.setAltitudeRequired(false);

        criteria.setBearingRequired(false);

        criteria.setCostAllowed(true);

        criteria.setPowerRequirement(Criteria.POWER_LOW);

        String provider = locationManager.getBestProvider(criteria, true);

        

        Location location = locationManager.getLastKnownLocation(provider);

        updateWithNewLocation(location);

        locationManager.requestLocationUpdates(provider, 2000, 10,

        		locationListener);

    }

   private final LocationListener locationListener = new LocationListener() {

    	public void onLocationChanged(Location location) {

    	updateWithNewLocation(location);

    	}

    	public void onProviderDisabled(String provider){

    	updateWithNewLocation(null);

    	}

    	public void onProviderEnabled(String provider){ }

    	public void onStatusChanged(String provider, int status,

    	Bundle extras){ }

    };

    private void updateWithNewLocation(Location location) {

    	String latLongString;

    	TextView myLocationText;

    	myLocationText = (TextView)findViewById(R.id.myLocationText);

    	if (location != null) {

    	double lat = location.getLatitude();

    	double lng = location.getLongitude();

    	latLongString = "纬度:" + lat + "\n经度:" + lng;

    	} else {

    	latLongString = "无法获取地理信息";

    	}

    	myLocationText.setText("您当前的位置是:\n" +

    	latLongString);

    }

}