Is there a way to prevent background task from exiting for callbacks?

adas 2 months ago

I have task that is running from other module, and when it is finished it executes callback method from background service. However when calling this method i get unexpected type error. I am assuming this is because background exited without finishing. Is there a way to prevent that and keep background waiting until task is finished.

  function onTemporalEvent() as Void {
      TaskUtils.initTask(method(:onFinished)); 
    
  }

  function onFinished() as Void {
   // do something
  }

0 flocsy🤠 2 months ago

What app type? How long the background process needs to wait?

0 adas 2 months ago in reply to flocsy🤠

It is a schedule widget which needs to update schedules from internet. I am trying to reuse same logic for background updates. It needs to wait for max 3-5 secods while it fetch few kb of json data.

0 flocsy🤠 2 months ago in reply to adas

This sounds like the classic use case. I thought it might need more than 30 seconds.

0 andyj713 2 months ago in reply to adas

A background task for a watch face either needs to exit normally or else it will be killed if it runs too long. If you're doing web requests the response needs to be only a few kb or else the returned data variable will be null or corrupted if the response code is not 200.

0 jim_m_58 2 months ago

Post the error you see,

0 adas 2 months ago in reply to jim_m_58

After second look at error i figured, that error is not about background service, but with my global Scheduler which which was not accessible for background. Once again I am shooting myself with global variables, but thank you for hint to double check error :)