Android map Api V2 blank mapview

Question

Я использовал этот код для поиска текущей позиции

googleMap.setMyLocationEnabled (true);

LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); 

    Criteria criteria = new Criteria(); 

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

    Location myLocation = locationManager.getLastKnownLocation(provider); 

    googleMap.setMapType(GoogleMap.MAP_TYPE_HYBRID); 
    double latitude = myLocation.getLatitude(); 
    double longitude = myLocation.getLongitude(); 



    LatLng latlng = new LatLng(latitude, longitude); 

    googleMap.moveCamera(CameraUpdateFactory.newLatLng(latlng)); 

    googleMap.animateCamera(CameraUpdateFactory.zoomTo(10)); 

    googleMap.addMarker(new MarkerOptions().position(new LatLng(latitude, longitude)).title("Iam here!")); 

У меня есть crashe. Пожалуйста, помогите мне

Answer 1

попробовать это работает для меня

Criteria criteria = new Criteria(); 

     Location location = locationManager 
       .getLastKnownLocation(LocationManager.NETWORK_PROVIDER); 
     if (location != null) { 
      onLocationChanged(location); 
     } 
     locationManager.requestLocationUpdates(
       LocationManager.NETWORK_PROVIDER, 20000, 0, Context here); // requesting 


     currentLocationLatLng = new LatLng(currentLatitude, 
       currentLongitude); 
     Marker location_present = map.addMarker(new MarkerOptions() 
       .position(currentLocationLatLng) 
       .title("you are here") 
       .snippet("") 

       .icon(BitmapDescriptorFactory 
         .fromResource(R.drawable.marker_)));// adding 
                  // marker 
                  // on 
                  // map 

и переопределить эти

@Override 
public void onLocationChanged(Location location) { 
    // TODO Auto-generated method stub 
    // getting 
    // updated 
    // latlong 
    // values on 
    // changing 
    // of user's 
    // location 
    // TODO Auto-generated method stub 
    currentLatitude = location.getLatitude(); 

    currentLongitude = location.getLongitude(); 
    lat.add(currentLatitude); 
    lang.add(currentLongitude); 
    latlang.add(currentLocationLatLng); 
    Log.e("" + lat.toString() + "fsdf" + lang.toString(), 
      "" + latlang.toString()); 

} 

@Override 
public void onProviderDisabled(String provider) { 
    // TODO Auto-generated method stub 

} 

@Override 
public void onProviderEnabled(String provider) { 
    // TODO Auto-generated method stub 

} 

@Override 
public void onStatusChanged(String provider, int status, Bundle extras) { 
    // TODO Auto-generated method stub 

}