Can Corona detect that the iPhone locked while app was open?

Solar2D General Questions/Discussion
#1

My app does real time inventory but if the user leaves the app active and the iPhone locks it’s in an unknown state when he/she unlocks the iPhone, as far as the user is concerned.

I either have to time out the app, assuming the app would keep running after the iPhone locks, I.e. put to a just opened equivalent state or if I can tell that the iPhone was just unlocked I can do a reset to known state based on that.

Last alternative is a restart button for the user to press, but since that requires some smarts on the users side, it’ll be missed and therefore least favourite option :slight_smile:

Open to any/all suggestions.

TIA [import]uid: 6547 topic_id: 1472 reply_id: 301472[/import]

#2

There is a “system” runtime event that indicates “applicationStart”, “applicationExit”, “applicationSuspend”, and “applicationResume” [import]uid: 7559 topic_id: 1472 reply_id: 4106[/import]

#3

Thank you.
Any hints on where to find a sampling?

Going searching :slight_smile:
[import]uid: 6547 topic_id: 1472 reply_id: 4108[/import]

#4

Try this:

local function systemMsg(event)  
  
 print( "System event: " .. event.type )  
  
end  
  
Runtime:addEventListener( "system", systemMsg );

You can use the Simulator to Suspend/Resume your app and view the messages in the Terminal. It also shows the app starting and exiting. [import]uid: 7559 topic_id: 1472 reply_id: 4110[/import]

#5

Thank you Tom.

Heinz [import]uid: 6547 topic_id: 1472 reply_id: 4111[/import]