Android: hide keyboard

BaseActivity.kt

@Suppress("unused")
abstract class BaseActivity : AppCompatActivity() {
  
    private lateinit var inputMethodManager: InputMethodManager
    ...

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        ...
        inputMethodManager = getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
    }

    override fun dispatchTouchEvent(ev: MotionEvent?): Boolean {
        if (ev?.action == MotionEvent.ACTION_DOWN) {
            val actual = currentFocus
            if (actual is TextInputEditText) {
                val borderView = Rect()
                actual.getGlobalVisibleRect(borderView)
                if (!borderView.contains(ev.rawX.toInt(), ev.rawY.toInt())) {
                    inputMethodManager.hideSoftInputFromWindow(actual.windowToken, 0)
                }
            }
        }
        return super.dispatchTouchEvent(ev)
    }

    fun hideKeyboard(){
        inputMethodManager.hideSoftInputFromWindow(currentFocus?.windowToken, 0)
    }

    fun showKeyboard(){
        inputMethodManager.toggleSoftInput(InputMethodManager.SHOW_FORCED,0)
    }
}