async void OnItemSelected(object sender, SelectedItemChangedEventArgs e)
{
if (list.SelectedItem == null)
{
return;
}
var vm = list.SelectedItem as LeagueViewModel;
list.SelectedItem = null;
//Empty message
if (vm.LeagueId == null)
{
return;
}
var page = new LeagueDetailsPage(vm.League);
page.OnJoinedLeague = (l) =>
{
ViewModel.LocalRefresh();
if (OnJoinedLeague != null)
{
OnJoinedLeague(l);
}
Device.BeginInvokeOnMainThread(() =>
{
Navigation.PopAsync();
});
};
await Navigation.PushAsync(page);
}
async void OnListItemSelected(object sender, SelectedItemChangedEventArgs e)
{
//This event gets triggered when you set SelectedItem to null or the item is deselected by the user so we need to check for null first
if (list.SelectedItem == null)
{
return;
}
var vm = list.SelectedItem as LeagueViewModel;
list.SelectedItem = null; //Deselect the item
if (vm.LeagueId == null) //Ensure the league is a valid league - some items in this list are used to display an empty message and do not have a LeagueId
{
return;
}
//Referencing 'this' in the body of delegate will prevent the page from being collected once it's popped
var weakSelf = new WeakReference(this);
var page = new LeagueDetailsPage(vm.League);
page.OnAbandondedLeague = (async(l) =>
{
var self = (AthleteLeaguesPage)weakSelf.Target;
if (self == null)
{
return;
}
self.ViewModel.LocalRefresh();
self.ViewModel.SetPropertyChanged("Athlete");
await self.Navigation.PopAsync();
});
await Navigation.PushAsync(page);
}