如何在 Swift 2.0 中用完成按钮做数字键盘？

Question

我试过很多带完成按钮的数字键盘，在 SWIFT 2.0 中找不到正确的答案。

Answer 1

您可以使用工具栏在键盘上方添加完成按钮

override func viewDidLoad() {
    super.viewDidLoad()
    let tooBar: UIToolbar = UIToolbar()
    tooBar.barStyle = UIBarStyle.BlackTranslucent
    tooBar.items=[
        UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FlexibleSpace, target: self, action: nil),
        UIBarButtonItem(title: "Done", style: UIBarButtonItemStyle.Done, target: self, action: "donePressed")]
    tooBar.sizeToFit()
    yourTextFeild.inputAccessoryView = tooBar
}

func donePressed () {
    yourTextFeild.resignFirstResponder()
}

看起来像这样

Answer 2

没有工具栏，我通过以下步骤在 Return 关键位置添加了完成按钮，

创建自定义 Return 按钮如下

let mobilePadNextButton = UIButton(type: UIButtonType.custom)

在viewdidload中，设计一下。我在这里设计下一步按钮，因为我需要下一步而不是完成。

mobilePadNextButton.setTitle("Next", for: UIControlState())//Set Done here
mobilePadNextButton.setTitleColor(UIColor.black, for: UIControlState())
mobilePadNextButton.frame = CGRect(x: 0, y: 163, width: 106, height: 53)
mobilePadNextButton.adjustsImageWhenHighlighted = false
mobilePadNextButton.addTarget(self, action: #selector(self.mobilePadNextAction(_:)), for: UIControlEvents.touchUpInside)

添加键盘通知

func textFieldDidBeginEditing(_ textField: UITextField) {
    NotificationCenter.default.addObserver(self, selector: #selector(ViewController.keyboardWillShow(_:)), name: NSNotification.Name.UIKeyboardWillShow, object: nil)
}


func keyboardWillShow(notification:NSNotification){

    if mobileNoTxtFld.isFirstResponder
    {
        DispatchQueue.main.async { () -> Void in
            self.mobilePadNextButton.isHidden = false
            let keyBoardWindow = UIApplication.shared.windows.last
            self.mobilePadNextButton.frame = CGRect(x: 0, y: (keyBoardWindow?.frame.size.height)!-53, width: 106, height: 53)
            keyBoardWindow?.addSubview(self.mobilePadNextButton)
            keyBoardWindow?.bringSubview(toFront: self.mobilePadNextButton)

            UIView.animate(withDuration: (((notification.userInfo! as NSDictionary).object(forKey: UIKeyboardAnimationCurveUserInfoKey) as AnyObject).doubleValue)!, delay: 0, options: UIViewAnimationOptions.curveEaseIn, animations: { () -> Void in
                self.view.frame = self.view.frame.offsetBy(dx: 0, dy: 0)
            }, completion: { (complete) -> Void in
                print("Complete")
            })
        }
    }
    else
    {
        self.mobilePadNextButton.isHidden = true
    }

}

在这里，您可以执行已完成的操作

func mobilePadNextAction(_ sender : UIButton){

    //Click action

}

UI 如下所示，

我提到了这个Git Code

如何在 Swift 2.0 中用完成按钮做数字键盘？

How to do number keypad with done button in Swift 2.0?

keyboard

ios

swift2