DOButton | Cute Animated Button written in Swift | iOS library

So I am creating a few buttons dynamically via javascript.

I have a row of buttons I want to rearrange according to a value coming from sharedpreferences. The value is changed and listened to correctly, but still nothing happens in the layout, so the mistake must be somewhere in the class I use to set the list or in the fragment where I set the constraints. This is the class:

so i am writing an app that asks the user to identify different notes that are being played to them. i imagine that to be done by playing one random note from a set of notes, then waiting for the user to press a button with the corresponding note, telling the user whether they put in the correct note, and, after a short delay, start the whole thing anew.

now my problem is the part with "waiting for the user to press the button".

Heres what i have done so far:

I have 12 buttons, one for each note of the chromatic scale, each with a corresponding onClickListener looking like this

I don't ask for a lot out of life, but I'd give a lot to know how to get a navigation bar on this popover:

Here's my storyboard:

And here's my code presenting the popover:

I need to bind a List inside a nested class to my ActionMethod.

Now, on calling the ActionMethod (look below), ActionItemList is null

Unfortunately i can't move the List into the main Model.

This is my main Model: