当键盘出现时将文本框和按钮向上移动 [英] moving View up with textfield and Button when keyboard appear Swift

问题描述

我知道有关此主题的一些问题已发布，但没有一个起作用.我有一个tableview，在它下面有一个UIView，其中包含一个文本字段和按钮.当我的键盘出现时，它覆盖了整个UIView，使我无法单击发送".显示我的应用程序外观的图像:

I know there are a few posted questions on this topic, but none of them worked. I have a tableview and under it there's a UIView that contains a textfield and button. When my keyboard appears, it covers the whole UIView, making me unable to click "Send". The image to show how my app looks like :

此刻，我的代码是:

 override func viewDidLoad() {
    super.viewDidLoad()
    inputTextField.delegate = self
    inputTextField.layer.cornerRadius = 5
    inputTextField.clipsToBounds = true
    sendButton.layer.cornerRadius = 5
    sendButton.clipsToBounds = true
    self.tableView.register(UINib(nibName: "TableViewCell", bundle: nil), forCellReuseIdentifier: "TableViewCell")
    loadMsg()
    self.hideKeyboardWhenTappedAround()

}

override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)
    inputTextField.becomeFirstResponder()
}

当键盘出现时，应该如何将UIView连同UIView包含的文本字段和按钮一起向上移动?

How should I move the UIView up along with the textfield and button that is contained by the UIView when my keyboard appears?

推荐答案

这里是解决方案，创建发送按钮视图的底部布局约束参考

Here is solution, Create bottom layout constraint reference of send button view

@IBOutlet weak var bottomConstraint: NSLayoutConstraint!
@IBOutlet weak var sendbuttonView: UIView!

    override func viewDidLoad() {
        super.viewDidLoad()
        NotificationCenter.default.addObserver(self, selector: #selector(handleKeyboardNotification), name: NSNotification.Name.UIKeyboardWillShow, object: nil)
        NotificationCenter.default.addObserver(self, selector: #selector(handleKeyboardNotification), name: NSNotification.Name.UIKeyboardWillHide, object: nil)
    }

    override func viewWillDisappear(_ animated: Bool) {
        NotificationCenter.default.removeObserver(self)
    }

    @objc func handleKeyboardNotification(_ notification: Notification) {

    if let userInfo = notification.userInfo {

        let keyboardFrame = (userInfo[UIKeyboardFrameEndUserInfoKey] as AnyObject).cgRectValue

        let isKeyboardShowing = notification.name == NSNotification.Name.UIKeyboardWillShow

        bottomConstraint?.constant = isKeyboardShowing ? -keyboardFrame!.height : 0

        UIView.animate(withDuration: 0.5, animations: { () -> Void in
            self.view.layoutIfNeeded()
        })
    }
}

演示示例

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