Strange Live Activity Occurrence Behavior

Question

Created May ’25

Replies 2

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Participants 2

I am seeing a really weird behavior with Live Activities. The Live Activity is always appearing on the simulator. However the Live Activity is only appearing on my physical device when there is no other widget in the widget bundle shown below.

@main
struct HoerspielWidgetsBundle: WidgetBundle {
    var body: some Widget {
        // Uncomment the line below and the Live Activity will no longer appear
        // UpNextWidget()
        PlaybackLiveActivity()
    }
}

Annotating that var with @WidgetBundle has no effect.

There are no logs indicating an error, the function to request a Live Activity does not throw and the status of the activity is active. Both the widget and the Live Activity are working fine otherwise. NSSupportsLiveActivities is set to true in the correct Info.plist file. I am not running any beta software and the physical iPhone is on the newest version (iOS 18.5). Using the template when adding a new target in Xcode, I was able to set up a similar app where the Live Activity works as expected.

I am really at a loss here which additional information I should provide or how this issue can be resolved.

Thank you for your help.

Boost

Answer 1

Engineer OP

Apple

May ’25

In your WidgetExtension target do you have the Include Live Activity and Include Configuration App Intent boxes checked?

0

Answer 2

FPST OP

4w

Accepted Answer

I finally figured this out. It's really weird but I found the issue.

In the initializer of the TimelineProvider struct of the UpNextWidget(), I created a SwiftData modelContainer. Once I remove that from the initializer to the function that will need the ModelContext, it works reliably as expected. Obviously this can not be intended behavior.

I filed a feedback with a sample project based on the template for Live Activities that illustrates the problem. FB17655658

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