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Question

I'm trying to make tab bar with sliding (or may be swipe is right word?) effect of changing ViewControllers.

I create two ViewControllers with TableView on whole screen, but with restrictions - top edge of table not overlap top layout guide.

I link this ViewControllers with TabBarController and when I use default animation - it's OK, work fine. But I want sliding animation and do something like (swift3):

func tabBarController(_ tabBarController: UITabBarController, shouldSelect viewController: UIViewController) -> Bool {
    animateSliding(fromController: selectedViewController, toController: viewController)
    return true
}

func animateSliding(fromController: UIViewController?, toController: UIViewController?) {
    let fromView: UIView = fromController!.view;
    let toView: UIView = toController!.view;

    fromView.superview?.addSubview(toView);
    toView.frame.origin.x = UIScreen.main.bounds.size.width;

    UIView.animate(withDuration: 0.3,
                   animations: {
                    toView.frame.origin.x = 0;
                    fromView.frame.origin.x -= UIScreen.main.bounds.size.width;
                   },
                   completion: nil);
}

(it's not complete animation, just sample)

Now I have animation I wanted but second's ViewController's table overlap top guide when appear (when slide over first viewController). If I change position ViewControllers in TabBar (first became second and second became first) situation change - not first controller's table overlap top guide (when appear)

Answer 1

Have you tried XLPagerTabStrip ? I believe that it is pretty similar to what you want to achive.

If not, you can base your code in that implementation.