Detecting iOS screenshots ala Snapchat and Facebook Poke.

Current technique is to poll the user's camera roll and check for new screenshot-esque images; if you would like to add another technique, definitely submit a pull-request!

Usage

[[ShotBlocker sharedManager] detectScreenshotWithImageBlock:^(UIImage *screenshot) {
    NSLog(@"Screenshot: %@", screenshot);
}];

// Later on...

[[ShotBlocker sharedManager] stopDetectingScreenshots];

Also available are:

• detectScreenshotWithBlock:^()
• detectScreenshotWithBlock:^() andErrorBlock:^(NSError * error){}
• detectScreenshotWithImageBlock:^(UIImage *screenshot) andErrorBlock:^(NSError * error){}

The NSError will occur if the user denies your app access to their photos.

Installation

Xcode

1. Add ShotBlocker as a git submodule. Here's how to add it as a submodule:

   $ cd rootOfYourGitRepo $ git submodule add https://github.com/clayallsopp/ShotBlocker.git Vendor/ShotBlocker $ git submodule update --init --recursive

2. Add ShotBlocker/ShotBlocker.h and ShotBlocker/ShotBlocker.m to your project, but don't copy the files (so the location is relative).

3. Add AssetsLibrary.framework to your project

#import "ShotBlocker.h"

Contact

Clay Allsopp @clayallsopp