键盘向上移动时如何固定 UIView 的位置？

Question

键盘上移时，如何固定UIView与image和label的位置？

我编写了一个代码，在键盘显示时向上移动我的 textField，但它移动了所有内容。

func textFieldDidEndEditing(_ textField: UITextField) {
    moveTextField(textField: rasstoyanietextField, moveDistance: -215, up: false)
}


func textFieldDidBeginEditing(_ textField: UITextField) {
    moveTextField(textField: rasstoyanietextField, moveDistance: -215, up: true)
}


func textFieldShouldReturn(_ textField: UITextField) -> Bool {
    rasstoyanietextField.resignFirstResponder()

    return true
}


func moveTextField(textField: UITextField, moveDistance: Int, up: Bool){
    let moveDuration = 0.1
    let movement: CGFloat = CGFloat(up ? moveDistance : -moveDistance)

    UIView.beginAnimations("animateTextField", context: nil)
    UIView.setAnimationBeginsFromCurrentState(true)
    UIView.setAnimationDuration(moveDuration)
    self.view.frame = self.view.frame.offsetBy(dx: 0, dy: movement)
    UIView.commitAnimations()

}

我该如何解决？

Answer 1

添加键盘观察者

  NotificationCenter.default.addObserver(
                self,
                selector: #selector(handleKeyboardDidShow),
                name: NSNotification.Name.UIKeyboardDidShow,
                object: nil)


            NotificationCenter.default.addObserver(
                self,
                selector: #selector(handleKeyboardWillHide),
                name:NSNotification.Name.UIKeyboardWillHide,
                object: nil)

我认为最好在具有 textfeilds/textViews 的 viewControllers 中使用滚动视图，以便在显示时向上移动所有项目，但在这里您可以挂钩 textfeild 的底部约束或其超级视图并将其拖动为 IBOutlet 并执行此操作

 @objc func handleKeyboardDidShow(notification: NSNotification) {
    if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {

          self.textFeilfBottomCon.constant = -1 * keyboardSize.height

          UIView.animate(withDuration: 0.5, animations: {

              self.view.layoutIfNeeded()

         })


    }
}

@objc func handleKeyboardWillHide(notification: NSNotification) {
    if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {

            self.textFeilfBottomCon.constant = 0

             UIView.animate(withDuration: 0.5, animations: {

              self.view.layoutIfNeeded()

         })

    }
}

Answer 2

因为您移动了整个视图，而不是仅移动了文本视图。换行：

self.view.frame = self.view.frame.offsetBy(dx: 0, dy: movement)

与：

textField.frame = textField.frame.offsetBy(dx: 0, dy: movement)

键盘向上移动时如何固定 UIView 的位置？

How to fix position of UIView when keyboard moved up?

keyboard

uitextfield

uiview

ios

swift