About the hidden problems about animated-tab-bar HOT 4 CLOSED

override func viewWillAppear(animated: Bool) {
     super.viewWillAppear(animated)
     self.hideTabBar(true)
}

override func viewWillDisappear(animated: Bool) {
     super.viewWillDisappear(animated)
     self.hideTabBar(false)
}

func hideTabBar(flag:Bool) { 
        let atc = self.tabBarController as RAMAnimatedTabBarController
        let icons  = atc.iconsView

        if (flag == true ) {
            atc.tabBar.hidden = true
            for icon in icons {
                icon.icon.hidden = true
                icon.textLabel.hidden = true
            }
        } else {
            atc.tabBar.hidden = false
            for icon in icons {
                icon.icon.hidden = false
                icon.textLabel.hidden = false
           }
       }
 }