private async void getStopsInfo()
{
string errorMessage = null;
Geopoint bottomLeft = MapExtensions.GetBottomLeftCorner(mapControl);
Geopoint topRight = MapExtensions.GetTopRightCorner(mapControl);
if (mapControl.ZoomLevel >= 16 &&
(stopsLoadingFailed || lastTopRight == null || lastBottomLeft == null ||
bottomLeft.Position.Latitude != lastBottomLeft.Position.Latitude ||
bottomLeft.Position.Longitude != lastBottomLeft.Position.Longitude ||
topRight.Position.Latitude != lastTopRight.Position.Latitude ||
topRight.Position.Longitude != lastTopRight.Position.Longitude))
{
lastBottomLeft = bottomLeft;
lastTopRight = topRight;
MapProgressBar.Visibility = Visibility.Visible;
try
{
string webresponse = await Network.StopsByViewport(bottomLeft, topRight);
List <Stop> rootObject = JsonConvert.DeserializeObject <List <Stop> >(webresponse);
CurrentStopList.Clear();
foreach (Stop s in rootObject)
{
CurrentStopList.Add(s);
}
LastBusStopUpdate = DateTime.Now;
stopsLoadingFailed = false;
}
catch (Exception ex)
{
errorMessage = ex.Message;
stopsLoadingFailed = true;
}
if (errorMessage != null)
{
MessageDialog msg = new MessageDialog("Houve algum problema durante a requisição ao servidor. Por favor, verifique se o aparelho está conectado à internet e tente novamente.", "Você está conectado à internet?");
await msg.ShowAsync();
}
MapProgressBar.Visibility = Visibility.Collapsed;
}
}