UIButton.setImage () not working in Swift 3

I am trying to add multiple buttons to a subclass UIView

. In a init()

subclass method UIView

(called leftPanel

), I added several calls to various functions to add each button. This is what mine looks like init()

:

override init(frame: CGRect){
    super.init(frame: frame)
    components = self.setupView()
    print("Checkpoint: [leftPanel] init() call finished") // basic debug checkpoint
}

      

        
        
        
      

    

init()

calls a named function setupView()

that contains calls to each of the functions that create the button. Here is my code for setupView()

:

func setupView() -> [UIView] {
    let addButton = self.setupAddButton()
    let infoButton = self.setupInfoButton()
    let orderPromoteButton = self.setupOrderPromoteButton()
    let orderDemoteButton = self.setupOrderDemoteButton()
    let refreshItemsButton = self.setupRefreshItemsButton()

    let components = [lessonActionsLabel, addButton, infoButton, orderPromoteButton, orderDemoteButton, refreshItemsButton]
    return components
}

      

        
        
        
      

    

And each of the calls to the function setupView

has a smaller function that contains the code to add each button to the subclass leftPanel

. I did it in such a way that I can remove each member as I need and can use each individual customization function to re-add each individual item to my view as needed. Most of the functions are almost the same and use this code:

func setupRefreshItemsButton() -> UIButton {
    let refreshItemsButton = UIButton(type: UIButtonType.infoLight)
    refreshItemsButton.frame = CGRect(x:0, y:screenHeight*55/100, width: screenWidth*30/100, height: screenHeight*5/100)
    refreshItemsButton.setTitle("  Refresh lesson items", for: UIControlState.normal)
    refreshItemsButton.setImage(UIImage(contentsOfFile: "up.png"), for: UIControlState.normal)
    self.addSubview(refreshItemsButton)
    return refreshItemsButton
}

      

        
        
        
      

    

to customize each of the buttons. However, when I run this on the iOS Simulator, the line that should set the image for each button doesn't seem to work. When I initialize each button, I initialize them with a type UIButtonType.infoLight

because I want to use the same style of a normal button infoLight

(like text color). The only type attribute infoLight

I would like to change is the image next to it (which is (i) by default). I would like to make an icon in UIImage(contentsOfFile: "up.png")

, but it doesn't work. Can anyone suggest any changes I could make to achieve this?

I am currently trying to make some changes to what I have, for example change the type to .custom

if that changes the image, but that won't work either. It only resets the formatting from .infoLight

which I would like to use, so I switched it back. However, if your decision requires me to change it to .custom

, then I can do so.

I also tried changing my code to replace up.png

only up

, but it still doesn't work.

None of my codes throw any warnings or errors.

Edit . Most of the answers suggested that I change mine UIImage(contentsOfFile: "")

to UIImage(named: "")

, which I did, but it takes up the entire UIButton frame that I would like to change and keep the same as .infoLight

keeping a small image with a label on the right. Can anyone suggest a workaround for this?

What's unique on this matter ?: Although .setImage () was solved with: UIImage(named:)

instead UIImage(contentsOfFile:)

, I would also like to store the .setTitle()

label in the button object. The call UIImage(named:)

makes the image fill the entire frame of the button, but I would like to keep it the same .infoLight

, with a small image with a title on the right.