title: Need android activity to wait until GPS location obtained
body: <p>Sorry for my english.
  I'm trying to get a single location from GPS to put on global variables latitude, longitude.
  GPS turns on, but the activity goes on before data is retrieved from GPS.</p>
  
  <p>My needs in other words... method getCurrentLocation() must finish only if a location has been found and the longitude and latitude variables are filled, so I could use them in other method.
  I know... user has to wait... I will solve this forward showing something on screen.
  What should I do?
  Thank you</p>
  
  <p>I think I'm skipping stop listening GPS at some place. Where is better?</p>
  
  <p>Code follows:</p>
  
  <pre><code>//Method to retrieve coordinates
  public void getCurrentLocation() {
      //Use GPS if possible
      if(manager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
          //assign Listener to GPS
          manager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, listener);
          Toast.makeText(this, LocationManager.GPS_PROVIDER, Toast.LENGTH_SHORT).show();
      }
      else if(manager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)){//toherwise, use NETWORK
          //assign Listener to NETWORK
          manager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, listener);
          Toast.makeText(this, LocationManager.NETWORK_PROVIDER, Toast.LENGTH_SHORT).show();
      }
  }
  
  //Class to store the location recived in two variables
  final class MyLocationListener implements LocationListener {
  
      @Override
      public void onLocationChanged(Location location) {
          //coordinates storing
          latitude = String.valueOf(location.getLatitude());
          longitude = String.valueOf(location.getLongitude());
          Toast.makeText(getApplicationContext(), latitude + longitude, Toast.LENGTH_LONG).show();
      }
  
      @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
      }
  }
  </code></pre>