Codenameone google map

Question

Ich habe eine Google Map. Im Simulator funktioniert alles gut, aber in Android-Gerät findet nie den aktuellen Speicherort (zeigt die Nachricht Location Error - siehe Code). Die Karte öffnet sich in der Weltansicht ...

cnt = new MapContainer(new GoogleMapsProvider("")); 
cnt.setMapType(MAP_TYPE_TERRAIN); 

LocationManager locationManager = LocationManager.getLocationManager(); 

InfiniteProgress ip = new InfiniteProgress(); 
Dialog ipDlg = ip.showInifiniteBlocking(); 
Location loc = LocationManager.getLocationManager().getCurrentLocationSync(30000); 
ipDlg.dispose(); 
if (loc == null) { 
    try { 
     loc = LocationManager.getLocationManager().getCurrentLocation(); 
    } catch (IOException err) { 
     Dialog.show("Location Error", "Unable to find your current location, please be sure that your GPS is turned on", "OK", null); 
     return; 
    } 
} 
locationManager.setLocationListener(this); 

if (loc != null) { 
    double lat = loc.getLatitude(); 
    double lng = loc.getLongitude(); 
    Coord coordinate = new Coord(lat, lng); 
} 

Das GPS ist auf dem Gerät aktiv. Ich kann meinen Standort in anderen Apps sehen.

Answer 1

Sie können den Code durch Rückgriff auf einige Standardpositionen verbessern, wenn die GPS-Empfang in einem bestimmten Bereich nicht gut ist:

cnt = new MapContainer(new GoogleMapsProvider("")); 
cnt.setMapType(MAP_TYPE_TERRAIN); 

LocationManager locationManager = LocationManager.getLocationManager(); 
Location loc = locationManager.getLastKnownLocation(); //default 
if (locationManager.isGPSDetectionSupported()) { 
    if (locationManager.isGPSEnabled()) { 
     InfiniteProgress ip = new InfiniteProgress(); 
     Dialog ipDlg = ip.showInifiniteBlocking(); 
     Location loc2 = locationManager.getCurrentLocationSync(30000); 
     if (loc2 != null) { 
      loc = loc2; 
     } 
    } else { 
     Dialog.show("Location Error", "Unable to find your current location, please be sure that your GPS is turned on", "OK", null); 
    } 
} else { 
    InfiniteProgress ip = new InfiniteProgress(); 
    Dialog ipDlg = ip.showInifiniteBlocking(); 
    Location loc2 = locationManager.getCurrentLocationSync(30000); 
    if (loc2 != null) { 
     loc = loc2; 
    } else { 
     loc = LocationManager.getLocationManager().getCurrentLocation(); 
    } 
} 
if (loc != null) { 
    double lat = loc.getLatitude(); 
    double lng = loc.getLongitude(); 
    Coord coordinate = new Coord(lat, lng); 
}