Android Kotlin - How to extend ConstraintLayout?

Question

I'd like my ConstaintLayout to carry extra additional properties, but I have trouble extending it. More precisely I have trouble putting correct constructor into

class myCL(): ConstraintLayout(???) {
}

Answer 1

To make sure you don't get any quirks in behavior, you should implement it like this.

class myCL: ConstraintLayout {
    constructor(context: Context) : super(context)
    constructor(context: Context, attrs: AttributeSet?) : super(context, attrs)
    constructor(context: Context, attrs: AttributeSet?,
                @AttrRes defStyleAttr: Int) : super(context, attrs, defStyleAttr)
}