CODEWITHSUNDEEP
iosstringswiftuicolor
user4545564
user4545564

Reputation:

turn string into a UIColor swift

I have buttons filled with Colors: enter image description here

When user press on a color, a string is generated, i.e. Yellow or Blue or Black etc.

What i want is to load the string into a UIColor when i segue back:

garageNameLabel.backgroundColor = UIColor."THE STRING THAT WAS GENERATED"

I know that UIColor.whiteColor(), blackColor() is there.

code:

let theStringColor = Blue

garageNameLabel.backgroundColor = UIColor.theStringColor

Thanks

Upvotes: 1

Views: 1891

Answers (3)

ClemensL
ClemensL

Reputation: 414

In OBJC code like this works. i have not tested this code, only translated it from OBJC to swift.

private func setColorWithNameForLabel(label: UILabel, colorName: String) {
    let colorString = colorName + "Color" // if your colorName matches f.i. "black" --> blackColor
    let s = Selector(colorString)

    if let color = UIColor.performSelector(s).takeUnretainedValue() as? UIColor { // as of swift 2.0 you have to take the retained value
        label.textColor = color
    }
}

Upvotes: 2

oremag14jf
oremag14jf

Reputation: 326

You can pass a parameter in the segue. In the new view, in the viewDidLoad () function, you can perform a check that change color depending on the value of the parameter.

if parameter == "blue" {
garageNameLabel.backgroundColor = UIColor.blueColor ()
} Else if parameter == "green" {
garageNameLabel.backgroundColor = UIColor.greenColor ()
}

Upvotes: 0

user4545564
user4545564

Reputation:

I solved the problem by making a dictionary 

var colors : [String:UIColor] = ["White": UIColor.whiteColor(), "Black": 
UIColor.blackColor(), "Gray": UIColor.grayColor(),"Turquoise": 
UIColor.cyanColor(),"Red": 
UIColor.redColor(),"Yellow":UIColor.yellowColor(),"Blue": UIColor.blueColor(), 
"Green": UIColor.greenColor()]

and then loading the string into it i.e.:

let theStringColor = "Blue"

garageNameLabel.backgroundColor = colors[theStringColor]

Upvotes: 5

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