Create a button programmatically and set a background image

ios swift uibutton
Gary picture Gary · Jun 5, 2014 · Viewed 157.3k times · Source

When I try creating a button and setting a background image in Swift:

let button   = UIButton.buttonWithType(UIButtonType.System) as UIButton
    button.frame = CGRectMake(100, 100, 100, 100)
    button.setImage(IMAGE, forState: UIControlState.Normal)
    button.addTarget(self, action: "btnTouched:", forControlEvents: UIControlEvents.TouchUpInside)

    self.view.addSubview(button)

I always get an error: "Cannot convert the expression's type 'Void' to type 'UIImage'".

Answer

Alex Reynolds picture Alex Reynolds · Jun 5, 2014

Your code should look like below

let image = UIImage(named: "name") as UIImage?
let button   = UIButton(type: UIButtonType.Custom) as UIButton
button.frame = CGRectMake(100, 100, 100, 100)
button.setImage(image, forState: .Normal)
button.addTarget(self, action: "btnTouched:", forControlEvents:.TouchUpInside)
self.view.addSubview(button)

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