如何防止在出现警报时显示视图控制器的 inputAccessoryView？

Question

I have a custom UIViewController in which I have overridden inputAccessoryView to return a view as follows-

extension LoginViewController {
    override var inputAccessoryView: UIView? {
        CustomToolbar()
    }
}

The inputAccessoryView is shown when an UIAlertController is presented by the view controller.

Can anyone point out how to prevent inputAccessoryView from being shown when an alert is presented?

Answer 1

You can add a check in inputAccessoryView returning logic , and return nil while the alert controller is presented.

extension LoginViewController {
    override var inputAccessoryView: UIView? {
         if let p = presentedViewController, p.isKind(of: UIAlertController.self) {
                return nil
            }
        CustomToolbar()
     }
}