UITabBar 배지 배경색 변경

func tabbaredit(color:UIColor){
    let tabbar = self.tabBarController!.tabBar
    // search badgeView
    for barButton in tabbar.subviews{
        for buttonSubView in barButton.subviews{
            if NSStringFromClass(buttonSubView.dynamicType) == "_UIBadgeView"{
                buttonSubView.backgroundColor = color
                buttonSubView.layer.cornerRadius = buttonSubView.frame.size.height/2
                for badgeView in buttonSubView.subviews{
                    // change badge background color
                    if NSStringFromClass(badgeView.dynamicType) == "UILabel"{
                        let label:UILabel = badgeView as! UILabel
                        label.backgroundColor = color
                        label.layer.cornerRadius = label.frame.size.height/2
                    }
                    // remove _UIBadgeBackground
                    if NSStringFromClass(badgeView.dynamicType) == "_UIBadgeBackground"{
                        badgeView.hidden = true
                    }
                }
            }
        }
    }
}

테스트에 사용한 소스

참고