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When the user successfully log into my app, session starts, after X period of inactivity the session will time out.
Now how do you detect, the user to see if his active using the application or not using it?
1) Check every on button?
2) check on screen load?
The most elegant way I’ve found to do this is to use a category on
UIApplicationthat provides asendEvent:method that resets anNSTimer(after calling its superclass implementation of course). If the timer goes off, post a notification. Listen for the notification everywhere you want to react to the timeout. Doing it this way means that you don’t have to add code all through your app to reset the timer on every interaction.Having said that, I agree with Shaggy Frog, this isn’t typical behaviour for an iOS application, so it’s not usually a good idea from a HCI perspective.