Swift:插入带有文本输入的警报框(和存储文本输入) [英] Swift: Insert Alert Box with Text Input (and Store Text Input )
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问题描述
在我的一个 viewController
中,我想让 alert box
出现,提示 user
输入此信息.然后,我希望用户使用 NSUserDefaults
存储此输入.我怎样才能做到这一点?
In one of my viewController
, I want to make an alert box
appear that prompts the user
to type this information.Then, I want the user to store this input using NSUserDefaults
. How can I achieve this?
先谢谢你!
推荐答案
看看这个:
let alertController = UIAlertController(title: "Email?", message: "Please input your email:", preferredStyle: .alert)
let confirmAction = UIAlertAction(title: "Confirm", style: .default) { (_) in
guard let textFields = alertController.textFields,
textFields.count > 0 else {
// Could not find textfield
return
}
let field = textFields[0]
// store your data
UserDefaults.standard.set(field.text, forKey: "userEmail")
UserDefaults.standard.synchronize()
}
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel) { (_) in }
alertController.addTextField { (textField) in
textField.placeholder = "Email"
}
alertController.addAction(confirmAction)
alertController.addAction(cancelAction)
self.present(alertController, animated: true, completion: nil)
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