Fixing iOS 17+ breaking changes: UIRefreshControl, viewIsAppearing & testability | iOS Dev Mentoring

[@EssentialDeveloper]

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[@ayo_emmanuel]

Ciao always has an alternative to working-solutions, better alternative. Thank you!

[@AtimisApollo]

Awesome, this vedio includes Unit testing knowledge.

[@EssentialDeveloper]

Glad it was helpful!

[@Omeir34]

Awesome knowledge sharing!

[@ihwan_id]

Thanks caio

[@EssentialDeveloper]

Glad it was helpful!

[@vaidasskardzius2906]

How to deal with this refreshControl when you have RxSwift Binding involved, when you fetch data from rest api on viewDidLoad and refreshControl is binded on BehavioralRelay?

[@EssentialDeveloper]

Hi! Start fetching the data in `viewIsAppearing` instead of `viewDidLoad` like we showed in the video to prevent updating the refreshControl in `viewDidLoad`.

[@vaidasskardzius2906]

@@EssentialDeveloper so I have a tableView and I set refreshControl to a tableView in viewDidLoad, tried to fetch data from a viewIsApearing but it still doesn't show up. If I set it also in the viewIsAppearing it does show up, but it's not animating, it's really weird, ios 16 works flawless

[@EssentialDeveloper]

Set the refreshControl in viewDidLoad - this doesn't change. But only update its state after `viewIsAppearing` is called like we show in the video.

[@vaidasskardzius2906]

Thank you, but I've tried your solution, but it doesn't work. Even if I fetch data in the viewIsAppearing method and only then the BehavioralRelay value changes and only then the refreshControl beginRefreshing method is called, it still doesn't work. Pull to refresh works fine, but on initialLoad it's not appearing if I set it in the viewDidLoad what is shown in this video. Just tried basic setup, without api call, just code like this: private let refreshControl = UIRefreshControl() , as a property injection in VC, viewDidLoad() { super.viewDidLoad() tableView.refreshControl = refreshControl } viewIsAppearing() { super.viewIsAppearing() refreshControl.beginRefreshing() } In this case it appears on the screen but it's not animating just freezed

[@EssentialDeveloper]

So the problem is somewhere else. You need to debug to find the issue. In the video, we're using a UITableViewController - but in your case it seems like you aren't. We can't help without looking at the full code.

[@michaziobro5301]

Are you unit testing view controllers? I think it pointless. UI should be tested with UI tests and unit test are for Logic

[@EssentialDeveloper]

UI tests are too slow and flaky. We highly recommend avoiding them as much as possible.