Question

我想呈现带有文本字段的UIAlertController。这个完成了。但我不希望它成为第一响应者。有没有办法用文本字段呈现UIAlertController，但textfield不应该是第一响应者？

  func showAlertData(data: String, at indexPath: IndexPath) {
        let title =  data
        let alert = UIAlertController(title: renameDocumentString, message: renameDocumentMessageString, preferredStyle: UIAlertControllerStyle.alert)
        alert.addTextField(configurationHandler: {(textField: UITextField) in
            textField.text = title
            textField.addTarget(self, action: #selector(self.textChanged(_: )), for: .editingChanged)
            textField.addTarget(self, action: #selector(self.textDidBegin(_: )), for: .editingDidBegin)
        })
        let cancel = UIAlertAction(title: cancelString, style: UIAlertActionStyle.cancel, handler: { (_) -> Void in
            alert.dismiss(animated: true, completion: nil)
        })
        let action = UIAlertAction(title: alertButtonOkString, style: UIAlertActionStyle.default, handler: { (_) -> Void in
            if let textfield = alert.textFields?.first {
            }
        })
        alert.addAction(cancel)
        alert.addAction(action)
        self.actionToEnable = action
        action.isEnabled = false
        self.present(alert, animated: true, completion: nil)
    }

此代码将UIAlertController与textfield一起呈现为响应者。我不想在呈现UIAlertController时成为响应者。

Answer 1

这不是理想的解决方案，但根据您的要求，在添加AlertController时禁用文本字段，并在呈现AlertController后再次启用。

 @IBAction func btnClick(_ sender: UIButton) {

    let alert = UIAlertController(title: "Title", message: "Message", preferredStyle: .alert)
    alert.addTextField { (textField) in

        //Disable textfield
        textField.isEnabled = false
    }

    let okAction = UIAlertAction(title: "Ok", style: .default)
    alert.addAction(okAction)

    alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))

    self.present(alert, animated: true) {

        //Enable textfield
        alert.textFields?.first?.isEnabled = true
    }
}

Answer 2

根据您的要求，这是一个完美的解决方案，请参考以下代码

if

如何使用textfield呈现UIAlertController，但该textfield不能是第一响应者？

2 个答案: