當鍵盤彈出ios 11時，UiTextfield不會向上移動（使用早期版本）

Question

問題：在ios 11中不起作用（但是在ios 8中工作）

以下代碼是用Swift 2.0編寫的。 但是我的應用程序太大，無法一次遷移代碼並發布更新。

目的：我想使用xcode 7發布版本，但是在ios 11上進行調試時卻得到了“開發人員磁盤映像”。因此，如何在不遷移代碼的情況下修復錯誤

func viewDidLoad(){

    super.baseScrolllView = scrollView
    NSNotificationCenter.defaultCenter().addObserver(self, selector: Selector("keyboardAdjust:"), name:UIKeyboardWillShowNotification, object: nil);
    NSNotificationCenter.defaultCenter().addObserver(self, selector: Selector("keyboardAdjust:"), name:UIKeyboardWillHideNotification, object: nil);
}

基類中的代碼

var keyboardIsVisible = false
var baseScrolllView: UIScrollView!
func keyboardAdjust(notification: NSNotification) {

    let info = notification.userInfo!
    let keyboardHeight:CGFloat = (info[UIKeyboardFrameEndUserInfoKey] as! NSValue).CGRectValue().size.height
    let duration:Double = info[UIKeyboardAnimationDurationUserInfoKey] as! Double

    var userInfo = notification.userInfo!
    var keyboardFrame:CGRect = (userInfo[UIKeyboardFrameBeginUserInfoKey] as! NSValue).CGRectValue()
    keyboardFrame = self.view.convertRect(keyboardFrame, fromView: nil)

    if notification.name == UIKeyboardWillShowNotification && keyboardIsVisible == false{

        keyboardIsVisible = true

        UIView.animateWithDuration(duration, animations: { ()

            var contentInset:UIEdgeInsets = self.baseScrolllView.contentInset
            contentInset.bottom = keyboardFrame.size.height
            self.baseScrolllView.contentInset = contentInset



        })


    }else {
        keyboardIsVisible = false

        UIView.animateWithDuration(duration, animations: { ()
            var contentInset:UIEdgeInsets = UIEdgeInsetsZero
            self.baseScrolllView.contentInset = contentInset
        })
    }

}

Answer 1

這就是我得到鍵盤高度的方法

@objc func keyboardWillShow(_ notification: Notification) {
    guard let userInfo = notification.userInfo, 
          let keyboardSize = (userInfo[UIKeyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue, 
          let duration = userInfo[UIKeyboardAnimationDurationUserInfoKey] as? Double else { return }

    containerViewBottomConstraint.constant = keyboardSize.height
    UIView.animate(withDuration: duration) { 
        self.containerView.layoutIfNeeded()
    }
}