Android Hide Keyboard on Activity Start (Kotlin)

fun AppCompatActivity.hideKeyboard() {    val view = this.currentFocus    if (view != null) {        val imm = getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager        imm.hideSoftInputFromWindow(view.windowToken, 0)    }    // else {    window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN)    // }}

class MainActivity : AppCompatActivity() {    override fun onCreate(savedInstanceState: Bundle?) {        super.onCreate(savedInstanceState)        setContentView(R.layout.main)        hideKeyboard()    }}

fun Fragment.hideKeyboard() {    val activity = this.activity    if (activity is AppCompatActivity) {        activity.hideKeyboard()    }}