Dynamic island is thin black line only

[angelinai]

No matter how and where I run (even the example) in iPhone 16 Pro/18.2 get a thin black line. I get activity ID is there no dynamic island updates / or states update. All I see is a thin line across the width if the simulator.

[sophie-maney]

Just adding a comment to confirm that we are also running into this issue (so it's reproducible).

We have tried changing the widget from the flutter_live_activities example code to Apple's own live widget example with the same result (when starting it via the live_activities plugin).

We have also tried running it on iOS 18.1 Simulator and on a real iPhone - both also resulted in the thin black line. We couldn't get the lock screen live activity to show up at all regardless of simulator or device.

What seems interesting is that giving an incorrect appGroupId to LiveActivities().init() doesn't seem to change anything - both create the same broken live activity.

I have done all the other troubleshooting steps (Correcting Build Phases order in XCode, disintegrating pods & flutter clean, double-checking our Apple Group Identifier etc.).

I'll keep debugging this for a bit today so I'll post an update if I find a solution.

Edit: Using 2.2.0 also didn't fix it.

[istornz]

Thanks for raising the issue, that's very strange, I can reproduce the issue too :/

I will try to find what is going wrong...

Edit: It's working well with the latest version of the plugin (2.3.0) on a physical device iPhone 14 Pro - iOS 18.2.1. But it's not working with the simulator (iOS 18.1).

What physical device did you try on? @sophie-maney

Edit 2: I can make it working on the simulator iPhone 16 Plus - iOS 18.2 (I do not change anything on the code)

[angelinai]

There is some type of disconnect between the activity and the widget UI update.

[amxfonseca]

What physical device did you try on? @sophie-maney

Apart from testing in the simulator I’ve tried it on a iPhone 16 Pro running the latest iOS version. Same behavior was observed