swift3 - 自动布局问题 Swift 3.0

Question

我已经使用了自动布局此屏幕截图。我希望​​当我单击textView时，textView将始终位于键盘上方，而且我正在使用自定义NavigationBar。我已经使用了 IQKeyBoardManagerSwift 它正在工作，但我的 NavigationBar 也向上移动，如果我单击 textView，我希望我的 NavigationBar 停留在顶部.任何解决方案。提前致谢

Answer 1

Swift 5.0 :- 将您的UITextView拖到contentView(UIView)中，创建底部约束的IBOutlet contentView 的，即 bottomConstraint。使用下面提到的代码后，自定义 NavigationBar 也将粘在顶部，只有 textView 将位于键盘上方。

 override func viewDidLoad() {
    super.viewDidLoad()
    let center: NotificationCenter = NotificationCenter.default
    center.addObserver(self, selector: #selector(Profile.keyboardWillShow(notification:)), name: NSNotification.Name.UIKeyboardWillShow, object: nil)
    center.addObserver(self, selector: #selector(Profile.keyboardWillHide(notification:)), name: NSNotification.Name.UIKeyboardWillHide, object: nil)
}

@objc func keyboardWillShow(notification: NSNotification){

let userInfo:NSDictionary = notification.userInfo! as NSDictionary
let keyboardSizeNow:CGSize = (userInfo.object(forKey: UIKeyboardFrameEndUserInfoKey)! as AnyObject).cgRectValue.size
UIView.animate(withDuration: 0.2, animations: { () -> Void in
    self.bottomConstraint.constant = keyboardSizeNow.height - 49
    self.view.layoutIfNeeded()
 })
}

@objc func keyboardWillHide(notification: NSNotification){
    UIView.animate(withDuration: 0.2, animations: { () -> Void in
        self.bottomConstraint.constant = 0
        self.view.layoutIfNeeded()
    })
}