Android Kotlin View width set error "Val cannot be reassigned"

Question

In Kotlin i am getting IDE error saying "Val cannot be reassigned" when i try to set width programmatically, Please see the code written in the onCreate() of Activity class,

shadowView.width = 200

Here shadowView is a View added in the layout

Answer 1

Simply

shadowView.layoutParams.width = 200

Answer 2

In order to set a view's width programmatically you should change its width in its layout params, like the example below:

val layoutParams = shadowView.layoutParams
layoutParams.width = 200
shadowView.layoutParams = layoutParams