See also

ActivityRecording::Session - rapid short recordings corrupt files, crash app

and

Second consecutive Session fails to start

I have the problem slightly different as in above posts.

I'm making a multisport app and wanted to create consecutive sessions. Have not tried it yet on a real device, only talking about the Simulator.

Anyway, with 5 session e.g. the 1st, the 3rd and the 5th work

 (with "work" I mean it records Activity.getActivityInfo().elapsedTime)

In the 2nd and 4th session though Activity.getActivityInfo().elapsedTime returns 0.

Mind: this happens in the Simulator!

At the beginning of every session I do

- arjSession = ActivityRecording.createSession   and

- arjSession.start()

At the end of every session I do

- arjSession.stop()   and

- arjSession.save()

as we're supposed to do it. arjSession.save() always returns true.

After reading above posts, I programmed a pause of some seconds between the end of one session and the beginning of the following one.

And see: now it functions and all 5 sessions are stored.

Problematic anyway: first of all I do not know how long the pause has to be. Secondly, the recording becomes unprecise: every session misses some seconds so the sum of the sessions is less than the total elapsed time really is. 

Now I am hesitating what to do: I could also record everything as one big session and work with laps (as in the triathlon app of hMSport in Connect IQ) but that is not what I wanted.

In the first post I referenced above, a pause of 500 ms was used, is there a guarantee that this is sufficient?

Another reason of going to the lap-solution would be that with the session-solution I do not record one multisport-activity but I have several loose sessions stored. Especially the total time is missing. Of course I can display the total time when the app is running, but I do not know how to store that. Create a field "totalTime" ? That would be incomprehensible to read afterwards probably in "Garmin Connect" or "History".

Thoughts?