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react-native-screenshot-detector

Note: this project is designed to work with the newer version of React Native library imports, i.e. React Native >= 0.40.0

Getting started

$ npm install react-native-screenshot-detector --save

$ react-native link react-native-screenshot-detector

Usage

iOS

#import <RNScreenshotDetector/RNScreenshotDetector.h>

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  // ... setup code

  // Somewhere React Native will have placed something like
  RCTRootView *rootView = [[RCTRootView alloc] initWithBundleURL...]

  // Somewhere below this you can setup the screenshot detector to listen for events
  RNScreenshotDetector* screenshotDetector = [[RNScreenshotDetector alloc] init];
  [screenshotDetector setupAndListen:rootView.bridge];
}

In JS

import * as ScreenshotDetector from 'react-native-screenshot-detector';

// Subscribe callback to screenshots:
this.eventEmitter = ScreenshotDetector.subscribe(function() { ... });

// Unsubscribe later (a good place would be componentWillUnmount)
ScreenshotDetector.unsubscribe(this.eventEmitter);

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Screenshot detection in React Native (iOS only)

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  • Objective-C 46.3%
  • JavaScript 25.1%
  • Python 12.2%
  • Java 10.6%
  • Ruby 5.8%