I can't implement this im my kotlin project to change drawable color

[ghost]

Hi @neuberfran,
I'm not sure that I understand you. Could you please rephrase.

This class using only with data binding. You need to create your own ViewModel class,
add val background = ObservableBackground(),
setup data binding in xml and set android:background="@{viewModel.background}"

I have a question:

what I put in mainactivity?

other

this is correct adapter:

class ValAdapter {

companion object {


    @BindingAdapter("android:background")
    @JvmStatic
    fun setIntToDrawable(@NonNull button: Button, @NonNull anInt: Int) {
        button.background = button.context.getDrawable(anInt)