iOS Build a Simple iPhone App with Swift Improving Our User Interface Changing the Background Color

Code Will Not Compile

When accessing the background property of the view, and trying to assign an instance of UIColor, it will not compile.

class ViewController: UIViewController {

  let blueColor = UIColor(red: 0, green: 0, blue: 255, alpha: 1.0)

  view.backgroundColor = blueColor

  override func viewDidLoad() {
      // Do any additional setup after loading the view, typically from a nib.

  override func didReceiveMemoryWarning() {
      // Dispose of any resources that can be recreated.

2 Answers

Jennifer Nordell
Jennifer Nordell
Treehouse Teacher

Hi there! Your code is fine except that it's a little misplaced. Your declaration for blueColor is in the correct spot, but the assignment of the blueColor to the background should happen inside the viewDidLoad() method.

I think you can get it with this hint, but let me know if you're still stuck! :sparkles:

Perfect, thank you Jennifer!