Bound the button to top right corner of the view iOS swift - ios

Question

I have a view in which i have multiple labels and a button i want the button to be bound to the top right corner
when i apply the add Missing constraints layout the button gets separate position for different devices Please help me to resolve this

Answer 1

NEVER use add missing constraints. This is a bad way of constructing your layout.
The easiest way to get your desired look is to decide on the size you want your button to be (eg. 30x30)
Then you add the following constraints to your button:
This sets the button's width & Height:
Then pin it to the right top corner:

Answer 2

//Just in case if anybody needs it with code:
//I have added 4 buttons to a custom view's each corner:
var customView = UIView()
override func viewDidLoad() {
super.viewDidLoad()
customView.frame = CGRect.init(x: 0, y: 0, width: 200, height: 200)
customView.backgroundColor = UIColor.red //give color to the view
customView.center = self.view.center
let crossButton = UIButton(frame: CGRect(x: -10, y: -10, width: 30, height: 30))
crossButton.layer.cornerRadius = 15
crossButton.backgroundColor = UIColor.black
crossButton.setImage(UIImage(named: "cross.png"), for: .normal)
crossButton.addTarget(self, action: #selector(crossButtonTapped), for: .touchUpInside)
crossButton.autoresizingMask = [.flexibleLeftMargin, .flexibleBottomMargin]
let flipButton = UIButton(frame: CGRect(x: customView.frame.width-15, y: -10, width: 30, height: 30))
flipButton.layer.cornerRadius = 15
flipButton.backgroundColor = UIColor.black
flipButton.setImage(UIImage(named: "done.png"), for: .normal)
flipButton.addTarget(self, action: #selector(crossButtonTapped), for: .touchUpInside)
flipButton.autoresizingMask = [.flexibleLeftMargin, .flexibleBottomMargin]
let scaleButton = UIButton(frame: CGRect(x: -10, y: customView.frame.height-20, width: 30, height: 30))
scaleButton.layer.cornerRadius = 15
scaleButton.backgroundColor = UIColor.black
scaleButton.setImage(UIImage(named: "done.png"), for: .normal)
scaleButton.addTarget(self, action: #selector(crossButtonTapped), for: .touchUpInside)
scaleButton.autoresizingMask = [.flexibleLeftMargin, .flexibleBottomMargin]
let editButton = UIButton(frame: CGRect(x: customView.frame.width-20, y: customView.frame.height-20, width: 30, height: 30))
editButton.layer.cornerRadius = 15
editButton.backgroundColor = UIColor.black
editButton.setImage(UIImage(named: "done.png"), for: .normal)
editButton.addTarget(self, action: #selector(crossButtonTapped), for: .touchUpInside)
editButton.autoresizingMask = [.flexibleLeftMargin, .flexibleBottomMargin]
customView.addSubview(crossButton)
customView.addSubview(flipButton)
customView.addSubview(scaleButton)
customView.addSubview(editButton)
self.view.addSubview(customView)
}
func crossButtonTapped(_ sender:UIButton) {
print("Cross Button was tapped")
}