How to get access to root view in kotlin?

Issue

How can I get the access to root view like in Java, for example:

I know using kotlin extensions we do not need to use findViewById anymore, but I do not know how to handle it. Thank you for any help.

final ViewGroup viewGroup =
                (ViewGroup) ((ViewGroup)findViewById(android.R.id.content)).getChildAt(0);
        if (viewGroup instanceof ConstraintLayout) {
         // some logic code
}

Solution

You can also access rootView like this

View rootView = getWindow().getDecorView().getRootView();

So in koltin

val rootView = window.decorView.rootView

Answered By - Prithvi Bhola