react-native-screenshot-prevent

This fork contains fully working blank screenshot on IOS13+ including screen recording

This fork contains fully working image screenshot cover on IOS13+ including screen recording

App layout is white / or black in dark theme

For now you might disable RNPreventScreenshot.enableSecureView() in development mode (check DEV variable)

because disableSecureView() is not working yet correctly

Getting started

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

Mostly automatic installation

React-Native version 0.59.X and higher: on IOS you might use only pod install in your ios folder

$ react-native link react-native-screenshot-prevent

Manual installation

iOS

1. In XCode, in the project navigator, right click Libraries ➜ Add Files to [your project's name]
2. Go to node_modules ➜ react-native-screenshot-prevent and add RNScreenshotPrevent.xcodeproj
3. In XCode, in the project navigator, select your project. Add libRNScreenshotPrevent.a to your project's Build Phases ➜ Link Binary With Libraries
4. Run your project (Cmd+R)<

Android

1. Open up android/app/src/main/java/[...]/MainApplication.java

• Add import com.killserver.screenshotprev.RNScreenshotPreventPackage; to the imports at the top of the file
• Add new RNScreenshotPreventPackage() to the list returned by the getPackages() method

2. Append the following lines to android/settings.gradle:

   include ':react-native-screenshot-prevent'
   project(':react-native-screenshot-prevent').projectDir = new File(rootProject.projectDir, 	'../node_modules/react-native-screenshot-prevent/android')
   

3. Insert the following lines inside the dependencies block in android/app/build.gradle:

      implementation project(':react-native-screenshot-prevent')
   

Usage

1
2// sample code
3
4import RNScreenshotPrevent, { addListener } from 'react-native-screenshot-prevent';
5
6/* (IOS, Android) for android might be the only step to get secureView
7 * on IOS enables blurry view when app goes into inactive state
8 */
9RNScreenshotPrevent.enabled(true/false);
10
11/* (IOS) enableSecureView for IOS13+ 
12 * creates a hidden secureTextField which prevents Application UI capture on screenshots
13 */
14if(!__DEV__) RNScreenshotPrevent.enableSecureView();
15
16/* (IOS) enableSecureView for IOS13+ 
17 * creates a hidden secureTextField which prevents Application UI capture on screenshots
18 * and uses imgUri as the source of the background image (can be both https://, file:///)
19 */
20if(!__DEV__) RNPreventScreenshot.enableSecureView(imgUri);
21
22/* (IOS) disableSecureView for IOS13+ 
23 * remove a hidden secureTextField which prevents Application UI capture on screenshots
24 */
25if(!__DEV__) RNScreenshotPrevent.disableSecureView();
26
27/* (IOS) notification handler
28 * notifies when user has taken screenshot (yes, after taking) - you can show alert or do some actions
29 *
30 * @param {function} callback fn
31 * @returns object with .remove() method
32 */
33addListener(fn);
34
35/** example using the listener */
36useEffect(() => {
37	const subscription = RNScreenshotPrevent.addListener(() => {
38		console.log('Screenshot taken');
39		showAlert({
40			title: 'Warning',
41			message: 'You have taken a screenshot of the app. This is prohibited due to security reasons.',
42			confirmText: 'I understand'
43		});
44	})
45
46	return () => {
47		subscription.remove();
48	}
49}, []);
50