async void Handle_ItemTapped(object sender, ItemTappedEventArgs e)
{
if (e.Item == null)
{
return;
}
GroceryItem item = (GroceryItem)e.Item;
bool isCompleted = item.Completed;
Debug.WriteLine("isCompleted=" + isCompleted);
bool result = await DisplayAlert(item.Name, "Mark as " + (isCompleted ? "Pending" : "Completed") + "?", "OK", "Cancel");
if (result)
{
item.Completed = !item.Completed;
ReloadData();
GroceryDatasource.UpdateItem(item);
}
Debug.WriteLine(result);
//Deselect Item
((ListView)sender).SelectedItem = null;
}
void OnResetTap(object sender, EventArgs e)
{
foreach (GroceryItem item in items)
{
item.Completed = true;
GroceryDatasource.UpdateItem(item);
}
ReloadData();
}
async Task ReloadData()
{
Debug.WriteLine("ON RELOAD DATA");
grouped = new ObservableCollection <GroupedGroceryItem>();
var groupPending = new GroupedGroceryItem()
{
LongName = "Pending", ShortName = "P"
};
var groupCompleted = new GroupedGroceryItem()
{
LongName = "Completed", ShortName = "C"
};
if (items == null)
{
items = await GroceryDatasource.GetData();
}
foreach (GroceryItem item in items)
{
if (item.Completed)
{
groupCompleted.Add(item);
}
else
{
groupPending.Add(item);
}
}
grouped.Add(groupPending);
grouped.Add(groupCompleted);
Debug.WriteLine("groupPending.count=" + groupPending.Count);
Debug.WriteLine("groupCompleted.count=" + groupCompleted.Count);
lstView.ItemsSource = grouped;
}