How to add small red dot in UITabBarItem

Question

How to add red dot on the top right side of the UITabBarItem.

I h

Answer 1

you can try this method:

func addRedDotAtTabBarItemIndex(index: Int) {

    for subview in tabBarController!.tabBar.subviews {

        if let subview = subview as? UIView {

            if subview.tag == 1314 {
                subview.removeFromSuperview()
                break
            }
        }
    }
    let RedDotRadius: CGFloat = 5
    let RedDotDiameter = RedDotRadius * 2

    let TopMargin:CGFloat = 5

    let TabBarItemCount = CGFloat(self.tabBarController!.tabBar.items!.count)

    let HalfItemWidth = CGRectGetWidth(view.bounds) / (TabBarItemCount * 2)

    let  xOffset = HalfItemWidth * CGFloat(index * 2 + 1)

    let imageHalfWidth: CGFloat = (self.tabBarController!.tabBar.items![index] as! UITabBarItem).selectedImage.size.width / 2

    let redDot = UIView(frame: CGRect(x: xOffset + imageHalfWidth, y: TopMargin, width: RedDotDiameter, height: RedDotDiameter))

    redDot.tag = 1314
    redDot.backgroundColor = UIColor.redColor()
    redDot.layer.cornerRadius = RedDotRadius


    self.tabBarController?.tabBar.addSubview(redDot)
}