I am using LongListSelector control on Windows Phone 8 and can't figure out the best way to handle a tap on an item. The few examples I've found rely on the SelectionChanged event. However, this solution is buggy because if I tap an item that opens a new page, hit back, and then tap the same item again, it won't work because this item is already selected, so SelectionChanged is not triggered.
I tried to register to the tap event and use the current selected item as the tapped one, but some times the current selected item is not the one I expect.
I could wrap my ItemTemplate in a button and handle the tap for each item but I need to reskin the button to make it look like a simple list item.
Finally, I don't understand why it is so complicated to achieve such a basic thing. Is there a simple and standard way I missed?
My second wish is to get an effect on the item when it is tapped. Is there any standard way to do it?
You could null your LongListSelector's SelectedItem at the end of each SelectionChanged event. I.e.
<phone:LongListSelector x:Name="LLS" SelectionChanged="LLS_SelectionChanged">
And the event handler:
private void LLS_SelectionChanged(object sender, SelectionChangedEventArgs e) {
// If selected item is null, do nothing
if (LLS.SelectedItem == null)
return;
// Navigate to the next page
NavigationService.Navigate(new Uri("/nextpage.xaml", UriKind.Relative));
// Reset selected item to null
LLS.SelectedItem = null;
}
You'll fire the SelectionChanged event twice, but nothing's going to happen the second time round and you should get the behaviour that you're looking for - (i.e Setting SelectedItem to null will trigger a new SelectionChanged event, but this second event gets caught in the if-statement)
As for the second part of your question, you might be better posting a new question.