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

Vas Pon
Vas Pon
655 Points

what kind of declaration they ask?

I tried a lot of options, but it still doesnt work :(

ViewController.swift
class ViewController: UIViewController {

  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.
  }

  let blueColor = UIColor.blue
  view.backgroundColor = UIColor.blue
}

1 Answer

Steven Deutsch
Steven Deutsch
21,046 Points

Hey Vas Pon,

The question wants us to set the ViewController's background view color to blue. The best place to do this is inside the viewDidLoad method. Since we already have a stored property, blueColor, with the UIColor value for blue, we can assign the value of this property to the view's backgroundColor property.

Take a look at the code:

class ViewController: UIViewController {

  // Note: I recommend defining properties at the top of the class
  let blueColor = UIColor.blue

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

      /* Note: The hint given by the boilerplate comment here! 
          "Do any additional setup" ex) changing the view color */

      view.backgroundColor = blueColor
  }

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

Good Luck

Vas Pon
Vas Pon
655 Points

thank you bro !