mobile equivelent for suspend & resume

[Richard Gaskin]

Peter Brett submitted a request for that in Feb 2016:

https://quality.livecode.com/show_bug.cgi?id=16829

-- 
  Richard Gaskin
  Fourth World Systems


J. Landman Gay wrote:
> Unfortunately there is no mobile equivalent to suspend and resume. I've 
> needed those many times for more than just tracking purposes and I haven't 
> found a workaround.
> 
> --
> Jacqueline Landman Gay | jacque at hyperactivesw.com
> HyperActive Software | http://www.hyperactivesw.com
> On March 26, 2018 9:43:44 AM Andrew Bell via use-livecode 
> <use-livecode at lists.runrev.com> wrote:
> 
>> I have a mobile app that I'm looking to implement "Enable Background
>> Execution" in now that the plist hack is no longer required. Is there
>> a simple way to track how long the app has been in the background?
>> Basically, I'd like to initialize the full stack if the user has been
>> gone for a certain amount of time to make sure everything is up-to-date.
>>
>> I found "suspend" and "suspendStack" (with their "resume" and
>> "resumeStack" counterparts) but they aren't supported in mobile. They
>> do exactly what I'm trying to do in the dev desktop environment but do
>> nothing on mobile.
>>
>> My app already writes some other data to a small preference file on
>> the device when the user does a variety of activities, like moving to
>> a previous card with the backKey on Android, so I do have a timestamp
>> for recent activity. I just don't know how to automatically check when
>> a user returns to determine how long they've been gone.
>>
>> --Andrew Bell