Creating an Expandable Button in Swift

We’re going to build a custom expandable button in Swift, like the one below:

First off, it’s important to understand the view structure that is necessary to implement a component like this one.

We will create a subclass of UIView that will be composed of 5 subviews like so:

1. A containerStackView that will hold the menuButton and the expandedStackView
2. A menuButton that, when tapped, will handle the expanding animation
3. An expandedStackView that will be shown or…