7 things you probably don’t know about Kotlin #4

CustomButton.kt

// Using in Java
CustomButton button = new CustomButton(context);
button.setVisibility(CustomButton.Visibility.getGONE());

...

class CustomButton(context: Context?) : View(context) {
    companion object Visibility {
        val GONE = 1
        val VISIBLE = 2
        val INVISIBLE = 3
    }
}