FullScreenCover animation using optional child state binding

[jondlew]

When using this code to display a fullScreenCover using an optional child state binding, dismissing the fullScreenCover loses the normal animation. Instead, the view just disappears when dismissed. Is there any workaround for this behavior?

.fullScreenCover(isPresented: viewStore.binding(get: {$0.childState != nil}, send: .childDismissed)){
                IfLetStore(store.scope(state: \.childState, action: Main.Action.childAction)) {
                    ChildView(store:$0)
                }
            }

The action for childDismissed looks like:

case .childDismissed:
     state.childState = nil
     return .none

Thanks!

[mbrandonw]

I'm not able to reproduce this locally. Can you share more code? Is the cover being dismissed by sending the childDismissed action? Or using @Environment(\.dismiss)?

[mbrandonw]

Ah yes, that's exactly what you need. The video wasn't loading for me, but now I see that the fullscreen cover does animate, but the contents are cleared immediately.

The helper @iampatbrown posted will fix this, as will the navigation tools we are actively building for TCA.

[jondlew]

Here's the child reducer:

public struct Child: ReducerProtocol {
    public struct State: Equatable {
    }
    
    public enum Action: Equatable {
        case cancel
    }
    
    public var body: some ReducerProtocol<State, Action> {
        Reduce { state, action in
            switch action {
            case .cancel:
                return .none
            }
        }
    }
}

[jondlew]

Awesome -- I'll give it a shot later on tonight.

Thanks!

[jondlew]

Works great -- thanks again!

[mfreiwald]

Nice thanks, I run into the same issue today :)