如何使用Swift在iOS中将“完成”按钮添加到Numpad？

据我所知，您不能在键盘部分上添加“完成”按钮。您必须

inputAccessoryView

UITextField

UITextView

查看文档以获取更多信息。

编辑 ：检查此问题以获取有关如何执行此操作的示例。

编辑2 ：Swift中的类似示例。

编辑3 ：来自编辑2的代码，因为链接可能过期。

override func viewDidLoad(){    super.viewDidLoad()    //--- add UIToolBar on keyboard and Done button on UIToolBar ---//    self.addDoneButtonOnKeyboard()}//--- *** ---//func addDoneButtonOnKeyboard(){    var doneToolbar: UIToolbar = UIToolbar(frame: CGRectMake(0, 0, 320, 50))    doneToolbar.barStyle = UIBarStyle.BlackTranslucent    var flexSpace = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FlexibleSpace, target: nil, action: nil)    var done: UIBarButtonItem = UIBarButtonItem(title: "Done", style: UIBarButtonItemStyle.Done, target: self, action: Selector("doneButtonAction"))    var items = NSMutableArray()    items.addObject(flexSpace)    items.addObject(done)    doneToolbar.items = items    doneToolbar.sizeToFit()    self.textView.inputAccessoryView = doneToolbar    self.textField.inputAccessoryView = doneToolbar}func doneButtonAction(){    self.textViewDescription.resignFirstResponder()}

斯威夫特4.2

func addDoneButtonOnKeyboard(){        let doneToolbar: UIToolbar = UIToolbar(frame: CGRect.init(x: 0, y: 0, width: UIScreen.main.bounds.width, height: 50))        doneToolbar.barStyle = .default        let flexSpace = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil)        let done: UIBarButtonItem = UIBarButtonItem(title: "Done", style: .done, target: self, action: #selector(self.doneButtonAction))        let items = [flexSpace, done]        doneToolbar.items = items        doneToolbar.sizeToFit()        txtMobileNumber.inputAccessoryView = doneToolbar    }    @objc func doneButtonAction(){        txtMobileNumber.resignFirstResponder()    }