How to use segmented control as an add minus feature

I am trying to create an app where I want a user to be a able to increase and decrease a number using a segmented controller. I have two problems.

One side is always selected, how can I make it so it will only be selected when the user is touching it?

How do I register if the same side is tapped? I have seen many examples where it shows how to register a tap on the other segment.

Solution

You are using the wrong control for this. There is a UIStepper which will do what you want.