可見性不與Kotlin合作

Question

嗨，下面給出的是我的代碼，我的按鈕應該變得不可見但是INVISIBLE不起作用

fun onPlay(view: View){
         var play = findViewById(R.id.play) as Button
         play.isClickable=false
         play.visibility=view.INVISIBLE
}

Answer 1

您的代碼中有錯誤，可見性常量應該從Class變量設置，而不是從參數變量設置。 通過View.INVISIBLE更改view.INVISIBLE

fun onPlay(view: View){
     var play = findViewById(R.id.play) as Button
     play.isClickable=false
     play.visibility= View.INVISIBLE // v letter should be capital
}

Answer 2

使用play.visibility=View.VISIBLE to visible和play.visibility=View.GONE to invisible or to hide