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iOS Build a Playlist Browser with Swift Building the Music Library and Playlist Models Using a Playlist Instance

getting "extra argument 'green' in call error. I don't have an extra argument so why am I getting this?

func rgbColorFromDictionary(colorDictionary: [String: Float]) -> UIColor {

        let red = colorDictionary["red"]!
        let green = colorDictionary["green"]!
        let blue = colorDictionary["blue"]!
        let alpha = colorDictionary["alpha!"]!



        return UIColor(red: red/255.0, green: green/255.0, blue: blue/255.0, alpha: alpha)


    }

1 Answer

Nick Kohrn
Nick Kohrn
36,935 Points

Hi Bryan,

The issue is that in your function declaration, you are setting the dictionary to have a String key and a Float value. The UIColor method takes CGFloat values rather than Float values. If you change your Float to CGFloat, then it should get rid of that error for you.

Also, you have an extra bang(!) in your alpha variable. That will more than likely cause another error. Getting rid of that should clear things up for you!