ScrollView 不断将文本字段推离视图

Question

这是画面的整体布局。该按钮位于滚动视图内，因此当第一响应者出现时，该按钮将被推到用户视图中。然后在第一响应者辞职时退缩

第二张图是急救人员在场时的样子。按钮确实向上移动了，但现在文本字段被推离了屏幕。如果有一种方法可以让按钮向上移动而文本字段不会被推出屏幕，那就太棒了。

@IBOutlet weak var ScrollView: UIScrollView!

@IBOutlet weak var TextField: UITextField!

@IBOutlet weak var testButton: UIButton!

func closeKeyboard(){
self.view.endEditing(true)
}
override func touchesBegan(_ touches: Set<UITouch>, with event:            UIEvent?) {
closeKeyboard()
}

override func viewDidLoad() {
super.viewDidLoad()


NotificationCenter.default.addObserver(self, selector: #selector(scrollviewtest.keyboardWillShow), name: NSNotification.Name.UIKeyboardWillShow, object: nil)

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

}

func keyboardWillShow(notification: NSNotification) {

    if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
        if self.view.frame.origin.y == 0{
            self.view.frame.origin.y -= keyboardSize.height
        }
    }

}

func keyboardWillHide(notification: NSNotification) {
    if let keyboardSize = (notification.userInfo?[UIKeyboardFrameBeginUserInfoKey] as? NSValue)?.cgRectValue {
        if self.view.frame.origin.y != 0{
            self.view.frame.origin.y += keyboardSize.height
        }
    }

}

Answer 1

使用类似的方法来更改文本字段的框架，

func keyboardWillShow(_ notification: Notification) {
    var scrollContentSize = CGSize(width: CGFloat(320), height: CGFloat(345))
    self.scrollView.contentSize = scrollContentSize
    var info = notification.userInfo!
    var kbSize = (info[UIKeyboardFrameBeginUserInfoKey] as! String).cgRect().size
    var contentInsets = UIEdgeInsetsMake(0.0, 0.0, kbSize.height + 100, 0.0)
    self.scrollView.contentInset = contentInsets
    self.scrollView.scrollIndicatorInsets = contentInsets
    var keyboardSize = (notification.userInfo![UIKeyboardFrameBeginUserInfoKey] as! String).cgRect().size
    UIView.animate(withDuration: 0.3, animations: {() -> Void in
        var f = self.view.frame
        f.origin.y = -keyboardSize.height + 50
        self.view.frame = f
    })
}

func keyboardWillHide(_ notification: Notification) {
    UIView.animate(withDuration: 0.3, animations: {() -> Void in
        var f = self.view.frame
        f.origin.y = 0.0
        self.view.frame = f
    })
}

ScrollView 不断将文本字段推离视图

ScrollView keeps pushing textfields off view

scrollview

textfield

ios

swift3