tabbar transition animation topbar color issue - swift

Question

I use this function to animate tabbar transition
func tabBarController(_ tabBarController: UITabBarController, shouldSelect viewController: UIViewController) -> Bool {
guard let tabViewControllers = tabBarController.viewControllers, let toIndex = tabViewControllers.firstIndex(of: viewController) else {
return false
}
animateToTab(toIndex: toIndex)
return true
}
func animateToTab(toIndex: Int) {
guard let tabViewControllers = viewControllers,
let selectedVC = selectedViewController else { return }
guard let fromView = selectedVC.view,
let toView = tabViewControllers[toIndex].view,
let fromIndex = tabViewControllers.firstIndex(of: selectedVC),
fromIndex != toIndex else { return }
// Add the toView to the tab bar view
fromView.superview?.addSubview(toView)
// Position toView off screen (to the left/right of fromView)
let screenWidth = UIScreen.main.bounds.size.width
let scrollRight = toIndex > fromIndex
let offset = (scrollRight ? screenWidth : -screenWidth)
toView.center = CGPoint(x: fromView.center.x + offset, y: toView.center.y)
// Disable interaction during animation
view.isUserInteractionEnabled = false
UIView.animate(withDuration: 0.3,
delay: 0.0,
usingSpringWithDamping: 1,
initialSpringVelocity: 0,
options: .curveEaseOut,
animations: {
// Slide the views by -offset
fromView.center = CGPoint(x: fromView.center.x - offset, y: fromView.center.y)
toView.center = CGPoint(x: toView.center.x - offset, y: toView.center.y)
}, completion: { finished in
// Remove the old view from the tabbar view.
fromView.removeFromSuperview()
self.selectedIndex = toIndex
self.view.isUserInteractionEnabled = true
})
}
When the transition is happening, the topbar color of the controller changes and it causes an annoying flash effect.
check the video, please
https://drive.google.com/file/d/15mlR9NfV_1C8gwi-4vfpV4CxpXbG5BUm/view
How can I prevent this?

Answer 1

I fixed it by disabling translucent navigation bar