Cómo ocultar KeyBord en Android
fun hideKeybord() {
val view = this.currentFocus
if (view != null) {
val hideKey = getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
hideKey.hideSoftInputFromWindow(view.windowToken, 0)
} else {
window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN)
}
}
// Call your function whatever you want
hideKeybord()
an-jorge