How do I set UIButton background color forState: UIControlState.Highlighted in Swift

Question

I can set the background color for a button but I can't work out how to set the background color for UIControlState.Highlighted. Is it even possible? or do I need to go down the setBackgroundImage path?

Answer 1

If anyone stops by, another way to go maybe more easily if it is something you need more than once... I wrote a short extension for UIButton, it works just fine:

for Swift 3

extension UIButton {     func setBackgroundColor(color: UIColor, forState: UIControlState) {         UIGraphicsBeginImageContext(CGSize(width: 1, height: 1))         CGContextSetFillColorWithColor(UIGraphicsGetCurrentContext(), color.CGColor)         CGContextFillRect(UIGraphicsGetCurrentContext(), CGRect(x: 0, y: 0, width: 1, height: 1))         let colorImage = UIGraphicsGetImageFromCurrentImageContext()         UIGraphicsEndImageContext()          self.setBackgroundImage(colorImage, forState: forState)     } } 

for Swift 4

extension UIButton {     func setBackgroundColor(color: UIColor, forState: UIControl.State) {         self.clipsToBounds = true  // add this to maintain corner radius         UIGraphicsBeginImageContext(CGSize(width: 1, height: 1))         if let context = UIGraphicsGetCurrentContext() {             context.setFillColor(color.cgColor)             context.fill(CGRect(x: 0, y: 0, width: 1, height: 1))             let colorImage = UIGraphicsGetImageFromCurrentImageContext()             UIGraphicsEndImageContext()             self.setBackgroundImage(colorImage, for: forState)         }     } } 

You use it just like setBackgroundImage:

yourButton.setBackgroundColor(color: UIColor.white, forState: UIControl.State.highlighted) 

Answer 2

Syntax changes to @winterized extension for Swift 3+ syntax

extension UIButton {     func setBackgroundColor(color: UIColor, forState: UIControlState) {         UIGraphicsBeginImageContext(CGSize(width: 1, height: 1))         UIGraphicsGetCurrentContext()!.setFillColor(color.cgColor)         UIGraphicsGetCurrentContext()!.fill(CGRect(x: 0, y: 0, width: 1, height: 1))         let colorImage = UIGraphicsGetImageFromCurrentImageContext()         UIGraphicsEndImageContext()         self.setBackgroundImage(colorImage, for: forState)     }}