React Native Play Licensing

Adds Client-Side License Verification to React Native applications. Works on both Android and iOS, but only verifies licenses on Android.

Installing

npm install react-native-play-licensing

Linking Native Dependencies

Automatic Linking

react-native link react-native-play-licensing

Manual Linking

1. In android/settings.gradle

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

2. In android/app/build.gradle

   ...
   dependencies {
       ...
       implementation project(':react-native-play-licensing')
   }
   

3. Register module in MainApplication.java

   import com.github.chadsmith.playlicensing.PlayLicensingPackage;  // <--- import
   
   public class MainApplication extends Application implements ReactApplication {
     ......
   
     @Override
     protected List<ReactPackage> getPackages() {
         return Arrays.<ReactPackage>asList(
             new MainReactPackage(),
             ......
             new PlayLicensingPackage(),  // <--- add package
         );
     }
   
     ......
   
   }

Usage

To use the react-native-play-licensing package in your codebase, use the PlayLicensing module:

import PlayLicensing from 'react-native-play-licensing';

export default function(App) {
  // ...
  const [licensed, setLicensed] = useState(null);
  useEffect(() => {
    PlayLicensing.verify('MIIBIjANBgkqhkiG...')
      .then(setLicensed);
  }, []);

  // do something if app is not licensed

  // ...
}

API

• verify(BASE64_PUBLIC_KEY, STRING_FOR_SALT)

PlayLicensing.verify(BASE64_PUBLIC_KEY)
  .then(licensed => {
    if(licensed === true) {
      // app was purchased from Google Play
    }
    else if (licensed === false) {
      // app was not purchased from Google Play
    }
    else {
      // verification failed, retry later
    }
  })