我无法在 Kotlin 的 Android Studio 中更改按钮的颜色 onClick

Question

I can't change the button color when I pressed on it after using onClick event, it still has the same color. the kotlin code below..

fun buttonSelect(view:View){
    val buSelect=view as Button
    var cellID=0

    when(buSelect.id){
        R.id.bu11 -> cellID=1
        R.id.bu12 -> cellID=2
        R.id.bu13 -> cellID=3
        R.id.bu21 -> cellID=4
        R.id.bu22 -> cellID=5
        R.id.bu23 -> cellID=6
        R.id.bu31 -> cellID=7
        R.id.bu32 -> cellID=8
        R.id.bu33 -> cellID=9
    }
    Log.d("Cell id: ",cellID.toString())
    buSelect.setBackgroundResource(R.color.black)
}

}

Answer 1

You should use onClickListener

myButton.setOnClickListener {
    myButton.setBackgroundColor(R.color.black)
}