How to programmatically set the position of a button in ios with Swift

Question

I'm currently doing something like this:

startButton.frame = CGRectMake(0, 0, startButton.frame.width, startButton.frame.height)

in viewDidLoad. However this seems to make no difference.

What are the correct way of doing such thing?

Answer 1

Use this to change position if not usign AutoLayout,

var X_Position:CGFloat? = 50.0 //use your X position here
var Y_Position:CGFloat? = 50.0 //use your Y position here

startButton.frame = CGRectMake(X_Position, Y_Position, startButton.frame.width, startButton.frame.height)

Answer 2

Well, the best way to set the position of your button is to use constraints! Here are some of mine that I used :)

     let storeBtnImg = UIImage(named: "StoreButton")
        storeBtn.translatesAutoresizingMaskIntoConstraints = false
        storeBtn.frame = CGRect(origin: CGPointMake(self.frame.width / 7.8, self.frame.height / 1.9), size: CGSize(width: self.frame.width / 10, height: self.frame.height / 10))
        storeBtn.backgroundColor = nil
        storeBtn.addTarget(self, action: "storeBtnAction", forControlEvents: .TouchUpInside)
        storeBtn.setImage(storeBtnImg, forState: UIControlState.Normal)
        self.view?.addSubview(storeBtn)

        NSLayoutConstraint(item: storeBtn, attribute: NSLayoutAttribute.CenterX, relatedBy: NSLayoutRelation.Equal, toItem: view, attribute: NSLayoutAttribute.CenterX, multiplier: 1, constant: 0).active = true
        NSLayoutConstraint(item: storeBtn, attribute: NSLayoutAttribute.Bottom, relatedBy: NSLayoutRelation.Equal, toItem: view, attribute: NSLayoutAttribute.Bottom, multiplier: 1, constant: -75).active = true 

The important parts are always remember to set .translatesAutoresizingMaskIntoConstraints = false

and to put .active = true at the end of your constraint.

Hope this helps, good luck!