swift ways to setup constraints
//https://stackoverflow.com/a/26181982/13171606 //There are multiple ways to add contraints, please open Link for almost ecery type of constraint override func viewDidLoad() { let newView = UIView() newView.backgroundColor = UIColor.red view.addSubview(newView) newView.translatesAutoresizingMaskIntoConstraints = false//compulsory newView.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true newView.centerYAnchor.constraint(equalTo: view.centerYAnchor).isActive = true newView.widthAnchor.constraint(equalToConstant: 100).isActive = true newView.heightAnchor.constraint(equalToConstant: 100).isActive = true }
