protected override void OnNavigatedTo(PhoneNavigationEventArgs e)
{
ShowLoading();
_location = LocationHelper.GetCurrentLocation();
Foursquare.GetCheckIns(GetCheckInsCallback, _location.Latitude, _location.Longitude);
base.OnNavigatedTo(e);
}
protected override void OnNavigatedFrom(PhoneNavigationEventArgs e)
{
ShowLoading();
base.OnNavigatedFrom(e);
}
