Swift 中出现键盘时移动按钮和视图

Question

I am trying to move a button that is initially at the bottom of the view, but when a text field is selected and the keyboard rendered, move the button up with it.

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其他几个帖子无法为我解决这个问题。

Move view with keyboard using Swift

是否有已经解决此功能的外部存储库或解决方案？

Answer 1

1. 首先将以下代码写入 ui 视图扩展。

扩展 UIView {

func bindToKeyboard() {
    NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillChange(_:)), name: UIResponder.keyboardWillChangeFrameNotification, object: nil)
}

@objc func keyboardWillChange(_ notification: NSNotification) {
    let duration = notification.userInfo![UIResponder.keyboardAnimationDurationUserInfoKey] as! Double
    let curve = notification.userInfo![UIResponder.keyboardAnimationCurveUserInfoKey] as! UInt
    let begginingFrame = (notification.userInfo![UIResponder.keyboardFrameBeginUserInfoKey] as! NSValue).cgRectValue
    let endFrame = (notification.userInfo![UIResponder.keyboardFrameEndUserInfoKey] as! NSValue).cgRectValue
    let deltaY = endFrame.origin.y - begginingFrame.origin.y

    UIView.animateKeyframes(withDuration: duration, delay: 0.0, options: UIView.KeyframeAnimationOptions(rawValue: curve), animations: {
        self.frame.origin.y += deltaY
    }, completion: nil)
}

}

1. 然后像我在下面使用的那样使用该功能。

   覆盖 func viewDidLoad() {

       super.viewDidLoad()
       yourButtonName.bindToKeyboard()
   }
   

希望这将是适合您的解决方案。