ScrollView keeps pushing textfields off view - ios

Question

This is the overall layout of the screen. The button is inside the scroll view, so that when the first responder appears the button will be pushed up to the users view. Then back down when the first responder resigns
In the second picture is what it looks like when the first responder is present. The button does move up, but now the text field is pushed off of the screen. If there is a way to allow the button to move up without the textfields being pushed off the screen, that would be amazing.
#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

use something like this for change frame of textfield,
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
})
}