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

Posted by Kris Rajendren
Kris Rajendren
12,822 Points

The solution is incorrect. Blue value should be 1.0 and not 255.

The solution is incorrect. Blue value should be 1.0 and not 255.

ViewController.swift 
class ViewController: UIViewController {

  let blueColor = UIColor(red: 0, green: 0, blue: 255, alpha: 1)

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

  override func didReceiveMemoryWarning() {
      super.didReceiveMemoryWarning()
      // Dispose of any resources that can be recreated.
  }
}
KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,972 Points

Why?

Kris Rajendren
Kris Rajendren
12,822 Points

UIColor initialization takes only CGFloat values between 0 and 1.0. This is clearly specified in the Apple documentation and surprisingly even specifically mentioned in the course video and the example itself.

1 Answer

Jason Anders
MOD
Jason Anders
Treehouse Moderator 145,860 Points
Jason Anders
Jason Anders
Treehouse Moderator 145,860 Points

Hi Kris Rajendren. That's right. The correct answer should be 1.0, as per documentation and instruction.

I've flagged this post for Instructor feedback. Thank-you for bringing this to the Community! :)

:dizzy: