how to bring button inFront of tableviewController in swift 4? [duplicate] - ios

Question

This question already has answers here:
Add view over tableview (UITableViewController)
(7 answers)
Closed 5 years ago.
I have a table view controller and the only way for me is to using that so please don't tell me use viewController instead of tableviewController here is my codes for adding a button and this Button is shown in the last cell But I want when user scrolling table view the button be at the bottom of screen without moving
override func viewDidLoad() {
super.viewDidLoad()
let submitButton = UIButton(frame: CGRect(x: 5, y: view.frame.origin.y + view.frame.size.height, width: self.view.frame.width - 10 , height: 50))
submitButton.backgroundColor = UIColor.init(red: 180/255, green: 40/255, blue: 56/255, alpha: 1.0)
submitButton.setTitle("Submit", for: .normal)
submitButton.titleLabel?.font = UIFont(name: "Arial", size: 15)
submitButton.titleLabel?.textColor = .white
submitButton.addTarget(self, action: #selector(submit), for: .touchUpInside)
submitButton.layer.cornerRadius = 5
view.addSubview(submitButton)

Answer 1

Try this approach if it suits your scenario:
var submitButton = UIButton()
override func viewDidLoad() {
super.viewDidLoad()
submitButton.frame = CGRect(x: 5, y: view.frame.origin.y + view.frame.size.height, width: self.view.frame.width - 10 , height: 50)
submitButton.backgroundColor = UIColor.init(red: 180/255, green: 40/255, blue: 56/255, alpha: 1.0)
submitButton.setTitle("Submit", for: .normal)
submitButton.titleLabel?.font = UIFont(name: "Arial", size: 15)
submitButton.titleLabel?.textColor = .white
submitButton.addTarget(self, action: #selector(submit), for: .touchUpInside)
submitButton.layer.cornerRadius = 5
self.view.window?.addSubview(submitButton)
}
But in this scenario you have to remove the button from superview in viewWillDisappear :
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
self. submitButton.removeFromSuperview()
}

Answer 2

Try this
declare button as a variable
var submitButton:UIButton!
and in viewDidLoad
submitButton = UIButton(frame: CGRect(x: 5, y: UIScreen.main.bounds.size.height - 50 , width: UIScreen.main.bounds.size.width - 10 , height: 50))
submitButton.backgroundColor = UIColor.init(red: 180/255, green: 40/255, blue: 56/255, alpha: 1.0)
submitButton.setTitle("Submit", for: .normal)
submitButton.titleLabel?.font = UIFont(name: "Arial", size: 15)
submitButton.titleLabel?.textColor = .white
submitButton.addTarget(self, action: #selector(submit), for: .touchUpInside)
submitButton.layer.cornerRadius = 5
self.view.addSubview(submitButton)
and implement this method
override func scrollViewDidScroll(_ scrollView: UIScrollView) {
submitButton.frame = CGRect.init(x: submitButton.frame.origin.x, y: UIScreen.main.bounds.size.height + scrollView.contentOffset.y - 50 , width: submitButton.frame.width, height: submitButton.frame.height)
}