Set runtime margin to any view using Kotlin

You need to get the layoutParams object from button and cast it to ViewGroup.MarginLayoutParams (which is a parent class of LinearLayout.LayoutParams, RelativeLayout.LayoutParams and others and you don’t have to check which is btnClickMe‘s actual parent) and set margins to whatever you want.

Check following code:

val param = btnClickMe.layoutParams as ViewGroup.MarginLayoutParams
param.setMargins(10,10,10,10)
btnClickMe.layoutParams = param // Tested!! - You need this line for the params to be applied.