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iOS Build a Simple iPhone App with Swift 2.0 Improving Our User Interface Changing the Background Color

Posted by jc laurent
jc laurent
6,351 Points

who has the correct values?

Wrong values?

colors.swift 
class ViewController: UIViewController {
    let blueColor = [UIColor(red: 0, green: 0, blue: 255/255.0, alpha: 1.0)]
    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

Oliver Duncan
Oliver Duncan
16,642 Points
Oliver Duncan
Oliver Duncan
16,642 Points

It looks like you're putting your instance of UIColor inside of brackets, making your property blueColor of type [UIColor] instead of UIColor. Lose the brackets and it should work.

EDIT - Went back to the challenge, it looks like they actually want you to use 255.0 in your color initializer, not 1 (or 255/255.0 as you had it). In my playground both values work for blue, but that's Swift 3. Anyways, try this: 

 let blueColor = UIColor(red: 0, green: 0, blue: 255, alpha: 1.0)
jc laurent
jc laurent
6,351 Points
jc laurent
jc laurent
6,351 Points

thks