Simple to use swift functions which are very useful in development and testing.
1. Generating random UIColor in Swift: Function returns random UIColor each time
func randomUIColor(alpha:CGFloat!)-> UIColor
{
return UIColor(red: CGFloat.random(in: 0...1), green: CGFloat.random(in: 0...1), blue: CGFloat.random(in: 0...1), alpha: alpha)
}
2. Random HEX Color code in Swift 3: Function returns random 3 char Hex colour code each time.
func randomHexColorCode() -> String{
let a = ["1","2","3","4","5","6","7","8","9","a","b","c","d","e","f"];
return "#".appending(a[Int.random(in:0..<15)]).appending(a[Int.random(in:0..<15)]).appending(a[Int.random(in:0..<15)])
}
3.UIColor from HEX Color code(Updated) : Function takes in a 3 char hex code with or without # in string format and returns a UIColor.This function comes in handy to directly generate UIColor from hex code
func colorFromHexString(_ hexCode:String!)->UIColor{
let scanner = Scanner(string:hexCode)
scanner.charactersToBeSkipped = CharacterSet(charactersIn: "$+#")
var hex: CUnsignedLongLong = 0
if(!scanner.scanHexInt64(&hex)) { return UIColor() }
let r = (hex >> 16) & 0xFF;
let g = (hex >> 8) & 0xFF;
let b = (hex) & 0xFF;
return UIColor.init(red: CGFloat(r) / 255.0, green: CGFloat(g) / 255.0, blue: CGFloat(b) / 255.0, alpha: 1)
}