Scope change animating from center

[agisboye]

During a recent update, it seems that the scope animation has changed so that calendar expands from the center rather than sliding out like a drawer.

Here's a gif of what I am describing: Imgur

Is there any way to use the old animation behavior?

[WenchaoD]

@agisboye Can you share a demo?

[agisboye]

@WenchaoD I did. 😃
http://imgur.com/W1w8jZH

[WenchaoD]

@agisboye I mean a demo project. Could be a dropbox link.

[agisboye]

@WenchaoD I misunderstood. I'll see if I can replicate the issue in a demo project.

I've tried using older versions of FSCalendar, that worked fine previously, and these have the same issue now. This leads me to believe that the problem is iOS 10 related. More specifically, I think it has to do with the SDK that the app is built against. The issue doesn't occur on iOS 10 if the app is built with Xcode 7/iOS 9 SDK.

[agisboye]

I narrowed it down to the way I was animating an autolayout constraint. It turns out that iOS 10 handles animations differently. An answer on StackOverflow suggested calling layoutIfNeeded on the superview of a view rather than the view itself. This resolved the issue in my case.