public PivotAdapter(Android.Support.V4.App.FragmentManager fragmentManager, Pivot pivot)
: base(fragmentManager)
{
if (pivot == null)
{
throw new ArgumentNullException(nameof(pivot));
}
_pivot = pivot;
_fragments = new List <PivotItemFragment>();
}
private async void Pivot_PivotItemLoading(Windows.UI.Xaml.Controls.Pivot sender, Windows.UI.Xaml.Controls.PivotItemEventArgs args)
{
if (this.DataContext is CollectionViewModelBase parentVM)
{
if (args.Item.DataContext is ViewModelBase vm)
{
try
{
await parentVM.SetCurrentAsync(vm);
}
catch (Exception ex)
{
PlatformBase.CurrentCore.Logger.LogError(ex, "Error while loading child ViewModel of type {1} in CollectionViewModel type {0}", parentVM.GetType().Name, vm.GetType().Name);
}
if (this.AutoLoadNextPivot)
{
ViewModelBase nextVM = null;
try
{
var currentIndex = sender.Items.IndexOf(args.Item);
var nextIndex = currentIndex + 1;
nextIndex = nextIndex < sender.Items.Count ? nextIndex : 0;
var nextPi = sender.Items[nextIndex] as PivotItem;
nextVM = nextPi.DataContext as ViewModelBase;
// Load the next VM
await parentVM.LoadViewModelAsync(nextVM);
}
catch (Exception ex)
{
PlatformBase.CurrentCore.Logger.LogError(ex, "Error while auto loading next PivotItem ViewModel of type {1} in CollectionViewModel type {0}", parentVM.GetType().Name, nextVM?.GetType().Name);
}
}
}
}
}
