Best place to put network code? about pageboy HOT 5 CLOSED

I guess a simpler question is, with a similar layout, does not snapchat populate their multiple UI without (performing network requests, mapping, sorting e.t.c) while user can freely swipe between VCs free of lag and freezes?

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@otymartin Hi 😄

The view lifecycle behaviour is managed by UIPageViewController, I'm not sure the behaviour is documented for what view controllers it will initialise and loadView depending on the page index, but this shouldn't really be a problem.

Performing network requests also shouldn't cause an issue with Pageboy UI performance, are you sure that the requests are executing in the background? Have you tried running Instruments and seeing what is using significant amounts of time when paging between view controllers? Check out the Time Profiler 🕙

Let me know how you get on..

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@otymartin Hi
I agree with @msaps. I think you have a bunch of codes which work on the main thread. As we know apple mention that main thread is for presenting and rendering layout and UI. Don't use main thread for the logical purpose.
Please put your sample code here to understand the issue. Also, make you solve it.
I use AFNetworking or Almofire for networking.

Check out this repos Awsome iOS

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@msaps @farshadmb
The code that was really causing me this headache was mapping an array after a network request finished. I managed a temporary fix (Actually it was a total accident i still dont know what fixed it) by just moving all my network code to the defaultPageIndex and not updating other childControllers until they come in view. It seems to work well but will probably need to dig deeper to see why this was a problem in the first place.

@farshadmb I stuck everything in the background and no luck🙈🙈

let sessions = results.map { Flex(partner: Person($0.object(forKey: FlexKey.partner) as! PFUser), flex: Person($0.object(forKey: FlexKey.flex) as! PFUser), session: $0) }

Full Disclosure. Im using IGListKit so the data mapped there eventually I would do IGListKitAdapter.performUpdates(animated: true, completion: nil) to show it on my childController's collectionView (Which is not in view).

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@otymartin Hi
Do you have any remote desktop application such as TeamViewer. I will join your session then I see your application performance. maybe I could fix it

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