How could I remove all empty or whitespace-only items from an App Inventor list? I have not been able to find anything that works. Either an extension or an App Inventor function would be fine.
I found an extension called ListUtils that was exactly what I needed. It also has a bunch of other features. Please see the link for more info. https://amerkashi.wordpress.com/2017/03/05/shuffling-ordering-lists/