Question

hey I’m trying to figure out what this element is in an app I have been using it looks like the UITableView but when you click it it drops down and shows some sliders and buttons. How do I do this in my app?

Here are a few photos to show how it works, this is what it looks like before I click the tone curve button:

Here is what it looks like after I click the tone curve button:

Answer 1

This kind of behaviour could be implemented using a UITableView. When the user taps the arrow, you would add a cell to the table view, probably with a row animation to animate it into place, using -[UITableView insertRowsAtIndexPaths:withRowAnimation:].

Alternatively, it could be a custom control inside a UIScrollView, which places the new view in place and animates its size and position to be displayed, while also animating the positions of the lower controls until they’re further below.