ColorWheel error

Question

Seems like my ColorWheel struct metode expects a parameter event though its: 
func randomColor() -> UIColor{
        var randomNumber = Int(arc4random_uniform(UInt32(colorsArray.count)))
        return colorsArray[randomNumber]
    }
When im trying to change the background color with:
view.backgroundColor = ColorWheel.randomColor()
i get the error "Missing arguments for parameter #1 in call"
whats wrong?
EDIT
It was "view.backgroundColor = ColorWheel().randomColor()" with a () efter ColorWheel
ref: http://stackoverflow.com/questions/25435928/missing-argument-for-parameter-1-in-call-error-for-function-with-no-params-swi

Joseph Kandi · Accepted Answer

You are not using the variable from the struct, instead you are calling the method on the struct itself. 
```swift
var colorWheel = ColorWheel()
```
Then later in the method you should use the variable when changing the color.
```swift
self.view.backgroundColor = colorWheel.randomColor()
```

tytyty · Answer

This is the correct code:
```
let colorWheel = ColorWheel()
// Just as Pasan wrote. Random color and random number use same code.
// Remember it's capital 'C' for Color which means it's the method not the variable.
view.backgroundColor = colorWheel.randomColor()
// Just as Pasan wrote. You don't need to write 'self.'.
```
I'm not sure why he didn't get any errors though.

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Angelo Pozzato

Angelo Pozzato

ColorWheel error

EDIT

2 Answers

Joseph Kandi

Joseph Kandi

tytyty

tytyty