fix: respects DarkMode in CountryTableView

[matheusmatos]

Hello guys, this simple PR fixes the issue https://github.com/firebase/FirebaseUI-iOS/issues/1013.

[RaimundasSakalauskas]

Any estimation when this might get merged and shipped? Our users keep complaining about unusable country selector in dark mode.

[tehsven]

Hey @matheusmatos can you please hit the Merge button? This continues to be an issue and we're having to workaround it with some pretty hacky code.

[tehsven]

Or maybe @morganchen12 can merge this?

[vinhhoangbepos]

@morganchen12 @matheusmatos Can you please merge this?

[RaimundasSakalauskas]

Since google team seems to be ignoring this entirely, here's the workaround that we have to make this work:

private var phoneAuthUIBugTask: Task<Void, Error>?
...
            if button.provider.providerID == PhoneAuthProviderID {
                phoneAuthUIBugTask = Task { @MainActor [weak self] in
                    while let self, self.presentedViewController != nil {
                        if let nvc = self.presentedViewController as? UINavigationController,
                           nvc.viewControllers.count >= 2, case let vc = nvc.viewControllers[1],
                           vc.view.subviews.count >= 1, let tableView = vc.view.subviews[0] as? UITableView {
                            tableView.backgroundColor = .systemBackground //fix dark mode
                            tableView.tableHeaderView = nil //remove search view, because it's broken
                        }

                        //10x per second
                        try await Task.sleep(nanoseconds: 100_000_000)
                    }
                }
            }
...

I start the task when displaying the phone auth and cancel the task in func authUI(_ authUI: FUIAuth, didSignInWith authDataResult: AuthDataResult?, error: Error?)

[morganchen12]

Hey everyone, apologies for the slow merge. This will be out in the next release.