iOS：UIAlertController 上的 textField 成为出现警报时的第一响应者

Question

我正在使用以下代码将 textField 添加到 UIAlertController：

let anAlertController = UIAlertController(title:title, message:message, preferredStyle: .alert)
        weak var weakSelf = self

        let aDefaultAction = UIAlertAction(title:defaultTitle, style: UIAlertAction.Style.default) {
            UIAlertAction in

        anAlertController.addAction(aDefaultAction)
    }

    let aCancelAction = UIAlertAction(title:canceltTitle, style: UIAlertAction.Style.cancel) {
        UIAlertAction in
    }
    anAlertController.addAction(aCancelAction)

    anAlertController.addTextField { (textField) in
        textField.textAlignment = NSTextAlignment.center
        textField.text = "textFieldText"
        textField.delegate = self
        textField.resignFirstResponder()
    }
    self.present(anAlertController, animated: true, completion: nil)

当我尝试显示 UIAlertController 时，文本字段自动成为第一响应者。我不希望文本字段在显示警报时成为第一响应者。我用谷歌搜索并尝试了几种方法来避免这种情况但没有运气。谁能告诉我如何做到这一点？

Answer 1

您可以暂时禁用UITexField，它不能在警报出现时响应：

anAlertController.addTextField { (textField) in
    textField.textAlignment = NSTextAlignment.center
    textField.text = "textFieldText"
    textField.isEnabled = false
    DispatchQueue.main.async { textField.isEnabled = true }
}

Answer 2

试试这个

anAlertController.addTextField { (textField) in
        textField.textAlignment = .center
        textField.text = "textFieldText"
        textField.delegate = self as? UITextFieldDelegate
        textField.isEnabled = false

    }
    self.present(anAlertController, animated: false, completion: {
        if let getTextfield  = anAlertController.textFields?.first{
                getTextfield.resignFirstResponder()
                getTextfield.isEnabled = true
        }

    })

iOS：UIAlertController 上的 textField 成为出现警报时的第一响应者

iOS: textField on UIAlertController becoming first responder on alert present

ios

swift

uialertcontroller

first-responder