How to run background tasks in flutter?

[Alihaydar Gubatov]

I know about packages like flutter-local-notifications or android-alarm-manager but those are a bit hard to set up and very buggy. How it is ever possible that a mobile framework that Google supports doesn't even have mechanism for running background tasks?

[Alihaydar Gubatov]

P.S. I know that Flutter Team provided some example how we can do it. But they seem like a hack rather than concrete solution. If I'm writing the code in flutter I shouldn't touch any Java or Swift code. That's the purpose of the Flutter right?!

[Matt Carroll]

The method described by +Ben Konyi is currently the available solution.  I assume that's the approach you're referring to.

That said, a more holistic solution is being designed.  There are numerous use-cases that must be handled by any background execution solution so it's a non-trivial problem to solve for developers in general.

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[Jagannathan Srinivasan]

Which is the solution from Ben Konyi that's being referred to here? I have used android-alarm-manager but it seems very unpredictable as to when the alarms trigger. Though android-alarm-manager claims to run the callback in an isolate, the callback stops firing all of a sudden. I tried with different alarm frequencies but everytime the call back fires for some time and then for no apparent reason

[Jagannathan Srinivasan]

Sorry hit the send button early...

On Tue, Nov 13, 2018 at 11:00 AM Jagannathan Srinivasan <jagan.sr...@gmail.com> wrote:

Which is the solution from Ben Konyi that's being referred to here? I have used android-alarm-manager but it seems very unpredictable as to when the alarms trigger. Though android-alarm-manager claims to run the callback in an isolate, the callback stops firing all of a sudden. I tried with different alarm frequencies but everytime the call back fires for some time and then for no apparent reason it stops firing. 

[Matt Carroll]

Here is Ben's write up on the topic of background execution:

https://medium.com/flutter-io/executing-dart-in-the-background-with-flutter-plugins-and-geofencing-2b3e40a1a124

[Jagannathan Srinivasan]

Thanks for sharing this. I had already read up this article when the background execution capability was first published. I feel this is too heavy to implement a simple callback. I have a requirement to have a background job that triggers once every 24 hours and I'm not able to achieve that successfully.

I'll again try using this heavyweight method but I agree with Alihaydar about why such a basic capability is lacking in such an awesome framework pushed by Google themselves

[Michael Dudek]

There is no way to implement general background task execution support. App background execution possibilities are strongly dependent on OS (Android/iOS).

[Sarosh Tariq]

Exactly my point. They should have released something at the launch.Most apps can't work without background execution.

[Şükriye Ludwig]

hello developers, 

Is there anybody who tested this? ->https://medium.com/flutter/executing-dart-in-the-background-with-flutter-plugins-and-geofencing-2b3e40a1a124

Is this the only way to start a background process via flutter?

What I need is a background process which is be able to listen to a grpc service and wake up the app and show the incoming message as a local push notification. Can anybody help  or give an advice?

Thank you

Cheers,

Şükriye

[Jd khan]

Hi, did you manage to make the background process?

[Spandan Bhandari]

On Tuesday, November 13, 2018 at 6:15:09 AM UTC+5:45, Alihaydar Gubatov wrote:

I know about packages like flutter-local-notifications or android-alarm-manager but those are a bit hard to set up and very buggy. How it is ever possible that a mobile framework that Google supports doesn't even have mechanism for running background tasks?

Try platform-channel

1. Method channel

2. Event channel

 dart to android

 android to dart

I am also doing the same thing or working on same kind of project based on geofencing

References which might help you guys:

https://flutter.dev/docs/development/platform-integration/platform-channels

https://medium.com/flutter/flutter-platform-channels-ce7f540a104e

The Boring Flutter Development Show, Episode 6: Packages and plugins is a YouTube video showing a Flutter plugin being implemented, live, using platform channels.(https://www.youtube.com/watch?v=ht2bDlJd2c4&feature=youtu.be)

https://www.youtube.com/watch?v=ovbspHZJ9b0&t=172s

Thank you

[Ian Perera]

I'm using the plugging 

background_fetch: ^0.3.2

regards

[Saul Palenzuela Hdez]

Ian Perera: had you made background_fetch worked evens the de app was closed or device was restarted???