☂️ Support for Background Isolates

[Lyokone]

This umbrella issue describes the current support of Background Isolates (announced as of Flutter 3.7) with FlutterFire.

The current implementation of Background Isolates only supports Flutter->Host and not the other way around. It means plugins that need to communicate back to Flutter will not work yet with Background Isolates.

Current support:

🚧 cloud_firestore (works but some errors when hot reloading, no support for subscribing to documents) ✅ cloud_functions ❓ firebase_analytics ❓ firebase_app_check ❓ firebase_app_installations 🚧 firebase_auth (some functions not available - verifyPhone) ✅ firebase_core ❓ firebase_crashlytics 🚧 firebase_database (works but some errors when hot reloading, no support for subscribing to documents) ❌ firebase_dynamic_links ❓ firebase_in_app_messaging ❓ firebase_messaging ❓ firebase_ml_custom ❓ firebase_ml_model_downloader ❓ firebase_ml_vision ✅ firebase_performance ❓ firebase_remote_config ❌ firebase_storage

Legend:

❓ = Not yet tested ✅ = Works 🚧 = Works partially ❌ = Doesn't work

[ariefwijaya]

How to know if it doesn;t work, is there any error occured?

[Lyokone]

@ariefwijaya Yes, if it doesn't work, you'll get an error.

[ariefwijaya]

Oh, sorry but I tried and firebase_storage worked in isolate. I use it to download file using await firebaseStorage.refFromURL(url).writeToFile(existFile); @Lyokone

[Lyokone]

@ariefwijaya Did you try with RootIsolateToken?

[ariefwijaya]

@Lyokone I'm using WorkManager to work in isolate

[Lyokone]

@ariefwijaya As pointed in the issue, this thread is for tracking support of Flutter own Background Isolates

[timsauvageot]

Is it planned to add documentation regarding available features to pub.dev of the packages or any other place? I couldn't find it anywhere in the official documentation and it's currently a process of trial and error to figure out what works in the background.

[Lyokone]

Currently, we rely on both ways communication. As long as Flutter will not provide communication from the host to Flutter, it will probably stay in this state.

[timsauvageot]

Currently, we rely on both ways communication. As long as Flutter will not provide communication from the host to Flutter, it will probably stay in this state.

I understand the underlying issue but this doesn't seem to be documented anywhere in the Flutter packages.