moyen le plus simple utilisant réseau et gps Satellite Android

Question

je dois surveiller les emplacements de l'utilisateur pour obtenir la latitude et la longtitude, quand j'utilise le fournisseur de réseau ou le fournisseur gps, son fonctionnement bien.Mais quand j'utilise les deux fournisseurs je n'ai pas valeur.Toute personne Solution. cherche et essayer beaucoup d'exemples

// Get the location manager 
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); 
// Define the criteria how to select the locatioin provider -> use 
// default 
Criteria criteria = new Criteria(); 
provider = locationManager.getBestProvider(criteria, true); 
networkLoc = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER); 
gpsLoc = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER); 

    if (networkLoc != null) { 
    System.out.println("Provider " + provider + " has been selected."); 
    double l = (double) (networkLoc.getLatitude()); 
    double lng11 = (double) (networkLoc.getLongitude()); 
    latituteField1.setText(Double.toString(l)); 
    longitudeField1.setText(Double.toString(lng11)); 
    } 
    if (gpsLoc != null) { 
    System.out.println("Provider " + provider + " has been selected."); 
    double l0t = (double) (gpsLoc.getLatitude()); 
double l0g = (double) (gpsLoc.getLongitude()); 
    latituteField.setText(Double.toString(l0t)); 
longitudeField.setText(Double.toString(l0g)); 

} 
    locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, this); 
    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this); 

    } 
@Override 
protected void onResume() { 
super.onResume(); 

locationManager.requestLocationUpdates(
     LocationManager.NETWORK_PROVIDER, 
     MINIMUM_TIME_BETWEEN_UPDATES, 
     MINIMUM_DISTANCE_CHANGE_FOR_UPDATES, 
     this 
); } 
    /* Remove the locationlistener updates when Activity is paused */ 
    @Override 
protected void onPause() { 
super.onPause(); 
locationManager.requestLocationUpdates(
     LocationManager.NETWORK_PROVIDER, 
     MINIMUM_TIME_BETWEEN_UPDATES, 
     MINIMUM_DISTANCE_CHANGE_FOR_UPDATES, 
     this 
); 
} 

     @Override 
    public void onLocationChanged(Location location) { 
lat1 = (double) (networkLoc.getLatitude()); 
lng1 = (double) (networkLoc.getLongitude()); 
latituteField1.setText(Double.toString(lat1)); 
longitudeField1.setText(Double.toString(lng1));  
lat = (double) (gpsLoc.getLatitude()); 
lng = (double) (gpsLoc.getLongitude()); 
latituteField.setText(Double.toString(lat)); 
longitudeField.setText(Double.toString(lng)); 
    } 
@Override 
     public void onStatusChanged(String provider, int status, Bundle extras) { 
// TODO Auto-generated method stub 

    } 

    @Override 
    public void onProviderEnabled(String provider) { 
Toast.makeText(this, "Enabled new provider " + provider, 
     Toast.LENGTH_SHORT).show(); 

    } 

    @Override 
    public void onProviderDisabled(String provider) { 
Toast.makeText(this, "Disenabled provider " + provider, 
     Toast.LENGTH_SHORT).show(); 
} 

    protected void Display(Cursor c) { 
Toast.makeText(this, "rowid: " + c.getString(0) + "\n" + 
"Latitude: " + c.getString(1) + "\n" + "Longitude: " + c.getString(2) + "\n" + 
Toast.LENGTH_LONG, 0).show(); 
    } 

Answer 1

ne demande pas les mises à jour de l'emplacement de plus d'un fournisseur .. au lieu, choisir un Criteria un Android choisira le meilleur pour vous.

Par exemple au lieu de:

locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, this); 
    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this); 

Utilisation:

Criteria c = new Criteria(); 
    c.setAccuracy(Criteria.ACCURACY_COARSE); //Or whatever criteria you want 
    final String PROVIDER = locationManager.getBestProvider(c, true); 
    locationManager.requestLocationUpdates(PROVIDER, minTime, minDistance, this);