Created
May 6, 2018 22:34
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This is a piece of the implementation of this post https://medium.com/@JillevdWeerd/bringing-animation-to-uitabbarcontroller-1b8780ced374
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| override func tabBar(_ tabBar: UITabBar, didSelect item: UITabBarItem) { | |
| let index = CGFloat(integerLiteral: tabBar.items!.index(of: item)!) | |
| let itemWidth = indicatorImage?.frame.width | |
| let newCenterX = (itemWidth! / 2) + (itemWidth! * index) | |
| UIView.animate(withDuration: 0.3) { | |
| self.indicatorImage?.center.x = newCenterX | |
| } | |
| } |
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It's basically a horizontal line below the tab that is selected. You can refer to the Medium articule to get more context