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Editorial Team
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Asked: 2026-05-15T02:38:23+00:00

In my iphone app, I want to provide some sort of app termination handler

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In my iphone app, I want to provide some sort of app termination handler that will do some final work (delete some sensitive data) before the application terminates.

I want to handle as much of the termination situations as possible:
1) User terminates the app
2) The device runs out of battery
3) The system terminates the app due to some reason (e.g. out of memory or app freeze)
4) Application crashes (EXC_BAD_ACCESS or SIGSEGV)

Any other exceptional situation ?
What is the best way to achieve this (e.g. is applicationWillTerminate method called in situation 2) ?
Is it possible to do the cleanup in a signal handler (includes iPhone Security framework calls) ?

regards

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1 Answer

  1. Editorial Team

    This timely post will help you with 4) to start with.

    You know when your app is going to terminate from your app delegate and you can listen for notifcations to battery changes, see UIDevice.

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