How to change button image in swift?

Question

I am working on an app which has a button. The button has no text, image or background.

So what I want to do is to give it an image in the viewDidLoad function.

Answer 1

You don't need ".png".

If ".imageWithRenderingMode(.AlwaysOriginal)" is working for you: To keep the same image in different states, you have to set the same image/properties for the different states.

@IBOutlet var tapButton: UIButton!

override func viewDidLoad() {
    super.viewDidLoad()

    tapButton.setImage(UIImage(named: "redTap")?.imageWithRenderingMode(.AlwaysOriginal), forState: .Normal)
    tapButton.setImage(UIImage(named: "redTap")?.imageWithRenderingMode(.AlwaysOriginal), forState: .Highlighted)
}