NavigationController.setViewControllers is animating even with animate: false

[ccampbell]

I am new to iOS development so I’m not sure if this is a bug with your code or if I am doing something wrong. I am using Xcode 8.3.2 and testing on iOS 10.3.

I am trying to swap out the view in the UINavigationController using the setViewControllers method like in LeftViewController in your demo:

navigationController.setViewControllers([viewController], animated: false)
mainViewController.hideLeftView(animated: true, delay: 0.0, completionHandler: nil)

The animated parameter is set to false, but for some reason the content is still animating in. It is kind of harder to notice with a table view, but if you swap it out for another view it is more obvious. Here is a gif of what it looks like:

You can see it is sliding down when it appears. Is there any way to avoid that?

Thanks

[ccampbell]

Okay so this is definitely something to do with the status bar animation. If you set it to slide the content slides down exactly with it. If you keep the status bar on the page the content does not move at all. Any ideas?

[Friend-LGA]

setViewControllers(animated: ...) is just simple fade animation from one UIViewController to another. This slide down animation inside UITableView is different kind of animations, it appears when you add new table cells inside table view. You can use tableView.reloadData() instead of tableView.insertRowsAtIndexPaths() to avoid this animation.

[ccampbell]

@Friend-LGA my original description of the ticket was wrong. It has nothing to do with the animation argument. It happens not just with table views. In my app I’m working on it is just a normal UIView with a label to test. It has to do with the height of UINavigationBar when setting the StatusBar to hidden and then putting it back. The shift down is 20px because that is the height of the status bar. If you look at the gif you can see that they move together (it is even more obvious
if you set the animation type to slide).

There are a few questions about this on stack overflow

• http://stackoverflow.com/questions/26380873/hide-status-bar-and-increase-the-height-of-uinavigationbar
• http://stackoverflow.com/questions/19137559/when-hiding-the-statusbar-my-navigation-bar-moves-up-in-ios7
• http://stackoverflow.com/questions/30657813/animate-hiding-the-status-bar-without-modifying-uinavigationcontroller-height

I tried a bunch of things and this is the only thing that worked for me:
https://github.com/wicharek/UINavigationBar-FixedHeightWhenStatusBarHidden

Do you think this is something that can be addressed in your library itself to save other people the headache?

[ccampbell]

I’m going to close this out since I have a workaround. It seems to have only been a problem for me when trying to use a custom height for UINavigationBar.

[thawzinoomyanmar]

How connect with another view controller .