iPhone : How to set BackgroundColor of UIButton with buttonType UIButtonTypeCustom

Question

i want to change the button color when it is clicked. I used :

[button setBackgroundColor:[UIColor redColor]];

but this shows red color onl

Answer 1

Thanks to @Dima

Here is an updated code for swift 3.0 as UIButton extension

extension UIButton {
  // thanks to @Dima http://stackoverflow.com/a/24665476/2581637 update code for swift 3
  func setBackgroundColor(color: UIColor, forUIControlState state: UIControlState) {
    func imageWithColor(color: UIColor) -> UIImage? {
      let rect = CGRect(x: 0.0, y: 0.0, width: 1.0, height: 1.0)
      UIGraphicsBeginImageContext(rect.size)
      if let context = UIGraphicsGetCurrentContext() {
        context.setFillColor(color.cgColor)
        context.fill(rect)
      }

      let image = UIGraphicsGetImageFromCurrentImageContext()
      UIGraphicsEndImageContext()

      return image
    }

    self.setBackgroundImage(imageWithColor(color: color), for: state)
  }
}