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func tabBarController(_ tabBarController: UITabBarController, shouldSelect viewController: UIViewController) -> Bool { | |
if let fromView = tabBarController.selectedViewController?.view, | |
let toView = viewController.view, fromView != toView, | |
let controllerIndex = self.viewControllers?.firstIndex(of: viewController) { | |
let viewSize = fromView.frame | |
let scrollRight = controllerIndex > tabBarController.selectedIndex | |
if fromView.superview?.subviews.contains(toView) == true { return false } |