Question

I have an app in Xcode which handles sensitive data. I would like to terminate the app / exit forcefully if there is inactivity for 5 mins. Can someone please tell me how to do this?
Thank you!

Answer 1

Click here for a tutorial on how to make a timer. Every action that the user takes, reset the timer. When the 5 minutes are up, you can use exit(0).

However, this method of programatically closing your app is discouraged by Apple, so use it at your own discretion.

Edit: In order to stop the timer, you need to store a pointer to the timer that you create, and then call:

[pointerToTimer invalidate];
pointerToTimer  = nil;

Edit 2: An alternative to using exit(0) would be to make a almost blank screen except for some text that states:

You have been inactive for too long. Please exit and restart this application.

Make this screen appear once the timer gets to 5 minutes. Therefore, the user can’t do anything on the app but look at the screen, or exit the app.