Support SwiftUI screen names through accessibilityIdentifier and friends

[marandaneto]

Problem Statement

Screen names are auto generated, so autocapture does not work well nor the detection of the current screen for session replay

Solution Brainstorm

fallback to accessibilityIdentifier or friends if available

posthog-ios/PostHog/UIViewController.swift

Line 55 in e35ec56

private func captureScreenView(_ window: UIWindow?) {

posthog-ios/PostHog/Replay/PostHogReplayIntegration.swift

Line 476 in e35ec56

var screenName: String?

[marandaneto]

afaik accessibilityIdentifier isn't available at runtime for production builds, what we could do is wrap the view:

var body: some View {
    PostHogView("Name"){
        List {
            ...
        }
    }
}

in this case, we can read the Name at runtime but it's not much different than calling PostHog.screen("Name"), all screens need to be wrapped.

[marandaneto]

Another option would be to use the objc_getAssociatedObject and objc_setAssociatedObject as an extension method to UIKit and SwiftUI views

Edit: not possible either since the associated objects are different when scanning the view tree