How to I properly set UIColor from int?

Question

I am trying to set the textColor of a UITextView by assigning it a value.

Earlier in the program I have

textView.textColor         


        

Answer 1

Swift version

You can use the following function to convert a RGB hexadecimal color Int to a UIColor.

func uiColorFromHex(rgbValue: Int) -> UIColor {
    
    // &  binary AND operator to zero out other color values
    // >>  bitwise right shift operator
    // Divide by 0xFF because UIColor takes CGFloats between 0.0 and 1.0
    
    let red =   CGFloat((rgbValue & 0xFF0000) >> 16) / 0xFF
    let green = CGFloat((rgbValue & 0x00FF00) >> 8) / 0xFF
    let blue =  CGFloat(rgbValue & 0x0000FF) / 0xFF
    let alpha = CGFloat(1.0)
    
    return UIColor(red: red, green: green, blue: blue, alpha: alpha)
}

And can be used like this

let myColorValue = 0x888888
let color = uiColorFromHex(myColorValue)