Change the View BackgroundColor on Tap

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I want to change the text and the background color of the view on tap. The quotes are changing, but the view background color don't change. What am I doing wrong?

Here is the code:

import UIKit        // UI: user interface

class ViewController: UIViewController {

// IB: Interface Builder
@IBOutlet weak var quoteLabel: UILabel!

var quotes = Quotes()


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

// Interface Builder Action.
// Gets called whenever the user taps on the button
@IBAction func inspireMeDidTap(sender: UIButton)
{
    let quote = quotes.randomQuote()
    quoteLabel.text = quote

    // change the background color of the view
    view.backgroundColor = randomColor()
}

func randomColor() -> UIColor
{
    let random = Int(arc4random()) % 5  // 0 -> 4
    switch random {
    case 0: return UIColor(red: 211/255.0, green: 86/255.0, blue: 87/255.0, alpha: 0)
    case 1: return UIColor(red: 71/255.0, green: 178/255.0, blue: 137/255.0, alpha: 0)
    case 2: return UIColor(red: 229/255.0, green: 177/255.0, blue: 93/255.0, alpha: 0)
    case 3: return UIColor(red: 92/255.0, green: 163/255.0, blue: 178/255.0, alpha: 0)
    case 4: return UIColor(red: 38/255.0, green: 38/255.0, blue: 38/255.0, alpha: 0)
    default: return UIColor(red: 56/255.0, green: 72/255.0, blue: 72/255.0, alpha: 0)
    }

}

}
2

There are 2 answers

0
Masterfego On BEST ANSWER

try this:

put all alpha = 1 in your colors (instead of 0). If alpha = 0, entirely transparent

Meaning of alpha

0
Mahendra On

You are setting alpha parameter to zero it means whatever the color is it will be completely transperent(not white).

So what you need to do is just set alpha to 1 and you will get your correct color