iPhone: screenshot

Question

Is there any method that calls in app when user made screenshot (hold home button + power) ??? Or which methods could be called ? Like applicationDidBecomeActive or something else ? Thanks...

This is a legitimate question, and it shouldn't have been "closed as not a real question". If anything, it's a duplicate. — JRG-Developer, Sep 08 '13 at 06:35

score 4 · Answer 1 · edited May 23 '17 at 12:16

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You could periodically check the latest photo in the library using code from this answer.

Then check some properties to see if it is NOT coming from the camera or other source:

the format should be PNG
dimensions should match the screen size
some additional metadata, perhaps

edited May 23 '17 at 12:16

Community

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answered Apr 12 '12 at 11:20

Tomas Andrle

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iOSPawan · Answer 2 · 2012-04-12T11:14:16.210

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In iOS 4.0, there was a notification fired PictureWasTakenNotification, but not anymore in iOS 5.0 or latter.

edited Apr 12 '12 at 11:14

answered Apr 12 '12 at 11:08

iOSPawan

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I have seen apps that detect this; I assume they detect its addition to the asset library in some way. – Cowirrie Apr 12 '12 at 11:10
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http://stackoverflow.com/q/2121970/602011 – Jim Apr 12 '12 at 11:12
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In iOS 4.0, there was a Darwin notification fired PictureWasTakenNotification, but not anymore. – iOSPawan Apr 12 '12 at 11:12

iPhone: screenshot

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