No visible @interface for UITabBar setScrollEdgeAppearance

user_14637553 0
Viewed 1482

today i met with issue on Xcode 12. When i tried iOS 15 version of app i noticed that tabbar background changed. I solved this by adding this line of code

if (@available(iOS 15.0, *)) {
    [[UITabBar appearance] setScrollEdgeAppearance:tabBarAppearance.appearance];
}

But after I swapped back to Xcode 12 from Xcode 13 i got this issue.

No visible @interface for 'UITabBar' declares the selector 'setScrollEdgeAppearance:'

Seems like Xcode12 bug for me but maybe i am wrong.

Edit: added if statement which was in code

xcode13 xcode12 uitabbar uitabbarcontroller ios
3 Answers

The only solution that worked for us in a swift-file:

#if swift(>=5.5) // Only run on Xcode version >= 13 (Swift 5.5 was shipped first with Xcode 13).
        if #available(iOS 15.0, *) {
            UITabBar.appearance().scrollEdgeAppearance = tabBarAppearance
        }
#endif

That snippet makes sure it is only compiled with Xcode Version > 13 and only runs for iOS 15. Swift 5.5 was introduced with Xcode 13.

user_11956610

I think that's because scrollEdgeAppearance was just a property of UINavigationBar for iOS < 15 versions. Since iOS 15 They've extended it to all others navigation bars

As per Apple doc:

When running on apps that use iOS 14 or earlier, this property applies to navigation bars with large titles. In iOS 15, this property applies to all navigation bars.

user_81646330

It's only available in Xcode 13. So we did this to fix the issue and be able to compile on both Xcode 12 and 13:

#if __clang_major__ >= 13
if (@available(iOS 15.0, *)) {
    [[UITabBar appearance] setScrollEdgeAppearance:tabBarAppearance.appearance];
}
#endif
user_19425510
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