Suspend in iOS, or when is a mobile app running?

[HENRY LOWE]

<Thanks to Panos for this tip:>

On iOS use mergNotify as below. Works well for me.

on openStack
 mergNotify "UIApplicationWillResignActiveNotification"
 mergNotify "UIApplicationDidBecomeActiveNotification"
end openStack

on UIApplicationWillResignActiveNotification pUserInfo
 // Your code before the app goes to background
 -- your code here to handle going to the background
end UIApplicationWillResignActiveNotification

on UIApplicationDidBecomeActiveNotification pUserInfo
// Your code after the app comes back to foreground
-- your code here to handle your app becoming active
end UIApplicationDidBecomeActiveNotification

Henry

> On Nov 17, 2020, at 10:54 AM, J. Landman Gay via use-livecode <use-livecode at lists.runrev.com> wrote:
> 
> Android has always acted like this and now that iOS apps run in the background like Android does, it behaves the same way. At least our problems are cross-platform now.
> 
> An app will stay in RAM until the user specifically quits or until the OS needs the memory. When that happens, the OS wipes the app and it effectively shuts down. We get no warning, except for a shutDown message. Android recommends we store the last state of the app and restore it when it starts up again.
> 
> I'd love to get a message when the app goes into the background but so far there is none. Storing every little change as it happens seems tedious and wasteful. I haven't had much luck with storing changes on shutdown but it's worth a try, it's been a while since I did it.
> 
> --
> Jacqueline Landman Gay | jacque at hyperactivesw.com
> HyperActive Software | http://www.hyperactivesw.com
> On November 17, 2020 9:27:50 AM Graham Samuel via use-livecode <use-livecode at lists.runrev.com> wrote:
> 
>> Sorry if this is documented somewhere but I can’t find it.
>> 
>> On desktop platforms, LC gives us “suspend” which is fired when the app goes into the background. I seem to be having some problems with iOS, in that when the screen locks (triggered by  user action or a time limit), my app seems to stop getting messages from the OS, so is in some sense suspended. This seems to call for something like “suspend” for mobiles. Does such a message exist?
>> 
>> Another thing that happens with iOS apps that use Location Services is that the user is sometimes asked via a popu-up on the screen of the device whether the app should be allowed to use these services when it’s not running. I don’t know what triggers these user messages, nor am exactly certain what ‘not running’ means - presumably if the app has been properly quit, that’s something other than ‘not running’. In the Standalone Settings for mobile, one can set Location Services as being a requirement, but there doesn’t seem to be a setting corresponding to this user choice.
>> 
>> Has anyone a clear understanding of all this? I would love to see an explanation.
>> 
>> TIA
>> 
>> Graham
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