UI帮助，可能需要从列表视图更改？

I want to be able to have a scrollable set of data fetched from a SQLite database (ArrayList) in which when an item is clicked it remains clicked (i.e. the background changes) and some reference to which element has been clicked and then if another widget (say a button) is pressed it carries out some action on the highlighted item. See below for an illustration of what I mean. This is a very simplified version.I want to be able to have a scrollable set of d