FB8954491

Having the same issue with CocoaMQTT. https://github.com/emqx/CocoaMQTT/blob/8be5c863b1f6adca4ce2212085d7473aa9e599f9/Source/CocoaMQTTTypes.swift#L66 Any update on this issue?

Found this note in the lounge: In general, you should not rely on implementation details of a framework (including SwiftUI) to achieve specific behaviors in your apps. The release notes did call out the change in implementation of List since we were aware of developers using UIKit methods to style their Lists in the past. This is a known limitation, but we realize this is a popular request, so rest assured we have noted the feedback here and in the SwiftUI lounge! Hmm.

I think Vlad wants to change the whole background not of some cells. We found a way using Introspect. However, we are not sure if this is in any way "legal". extension View {     @warn_unqualified_access     @ViewBuilder     func listBackgroundColor(_ color: Color) -> some View {         introspectViewController { inspectSubView($0.view, backgroundColor: .init(color)) }     }     // MARK: Helper     private func inspectSubView(_ view: UIView, backgroundColor: UIColor) {         for subview in view.subviews {             if NSStringFromClass(type(of: subview)).contains("UICollectionViewListLayoutSectionBackgroundColorDecorationView") {                 subview.backgroundColor = backgroundColor                 return             }             inspectSubView(subview, backgroundColor: backgroundColor)         }     } }

FYI: We found a way using Introspect (not sure if in any way legal). However, as Apple Engineers noted, we should not rely on implementation details of a framework. Unfortunately, we are now in the stupid situation of having done exactly that in the past and now having to find a workaround. Otherwise our app looks extremely broken... extension View {     @warn_unqualified_access     @ViewBuilder     func listBackgroundColor(_ color: Color) -> some View {         introspectViewController { inspectSubView($0.view, backgroundColor: .init(color)) }     }     // MARK: Helper     private func inspectSubView(_ view: UIView, backgroundColor: UIColor) {         for subview in view.subviews {             if NSStringFromClass(type(of: subview)).contains("UICollectionViewListLayoutSectionBackgroundColorDecorationView") {                 subview.backgroundColor = backgroundColor                 return             }             inspectSubView(subview, backgroundColor: backgroundColor)         }     } }

With SwiftUI Apple switch from UITableView to a custom implemtation based on UICollectionView. Thus all known workaround do not work anymore. Please file a Radar.

It is a real pity. With the (understandable) departure of UITableView, an extremely large number of hacks that were in active use to use SwiftUI for productive apps break.

FYI: FB10225556 is my radar regarding this issue.

The approach presented above does not work reliably as the UICollectionViewListLayoutSectionBackgroundColorDecorationView will be re-rendered regardless and independently of the section content. Then the view modification will not be applied.

https://developer.apple.com/documentation/swiftui/view/scrollcontentbackground(_:)-8wrn2?changes=latest_beta

We are facing the same issue. Where do we set CODE_SIGNING_ALLOWED for packages and not the whole app?

Note: Without signing, everything works as expected. Unfortunately. But that's not what we need.

FYI: FB11402077

Linking against a .dynamic type library may fix the problem, but this is no guarantee. If looking a MSAL, it is defined without a type and thus should work if you trust the statements of some post here. But it does not :(.

For me, this issue is present since iOS 17, everything was fine till then. Did Anyone find a solution or workaround?