Clear focus for EditText on click outside

MainActivity.kt

class MainActivity : AppCompatActivity() {

// code

// Clear focus for EditText on click outside
override fun dispatchTouchEvent(ev: MotionEvent?): Boolean {
        if (ev?.action == MotionEvent.ACTION_DOWN) {
            (currentFocus as? EditText)?.let { et ->
                Rect().also { rect ->
                    et.getGlobalVisibleRect(rect)
                    if (!rect.contains(ev.rawX.toInt(), ev.rawY.toInt())) {
                        et.clearFocus()
                        et.hideKeyboad()
                    }
                }
            }
        }
        return super.dispatchTouchEvent(ev)
    }
}

fun View.hideKeyboad() =
    (context.getSystemService(Context.INPUT_METHOD_SERVICE) as? InputMethodManager)?.hideSoftInputFromWindow(windowToken, 0)

Kotlin version of https://gist.github.com/sc0rch/7c982999e5821e6338c25390f50d2993