protected override async void OnAppearing()
{
base.OnAppearing();
var locator = CrossGeolocator.Current;
locator.PositionChanged += Locator_PositionChanged;
await locator.StartListeningAsync(TimeSpan.Zero, 100);
var position = await locator.GetPositionAsync();
var center = new Xamarin.Forms.Maps.Position(position.Latitude, position.Longitude);
var span = new Xamarin.Forms.Maps.MapSpan(center, 2, 2);
gameLocationsMap.MoveToRegion(span);
var gameLocations = await GameLocation.Read();
DisplayGameLocationsInMap(gameLocations);
// var gameLocations = await GameLocation.GetGameLocations(position.Latitude, position.Longitude);
}