Have you got the Snapchat App? Even taken a screenshot of the image because you wanted to keep it forever? Ever wondered how to do that in your own app? Before iOS 7, detecting screenshots in your application used to be touchesCancelled:withEvent:, however Apple has made it so touchesCancelled:withEvent: is no longer called when the user takes a screenshot with your application open. This would effectively break Snapchat entirely, so a couple betas in a new solution was added. Now, ...
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