react-native-fingerprint-change

Getting started

$ npm install react-native-fingerprint-change --save

Mostly automatic installation

$ react-native link react-native-fingerprint-change

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-fingerprint-change and add RNFingerprintChange.xcodeproj
3. In XCode, in the project navigator, select your project. Add libRNFingerprintChange.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.toyberman.fingerprintChange.RNFingerprintChangePackage; to the imports at the top of the file
• Add new RNReactNativeAccessibilityPackage() to the list returned by the getPackages() method

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

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

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

     compile project(':react-native-fingerprint-change')
   

Usage

import RNFingerprintChange from 'react-native-fingerprint-change';
 
// How to use the module 
RNFingerprintChange.hasFingerPrintChanged((error, fingerprintHasChanged)=>{
    if(fingerprintHasChanged) {
        // do what you need when fingerprint change has been detected
    }
})
 
 
example:
 
import {
    AppState,
} from 'react-native';
 
import RNFingerprintChange from 'react-native-fingerprint-change';
 
 
class example extends Component {
 
    constructor(props) {
        super(props)
        this.state = {
            appState: AppState.currentState,
        }
    }
 
    componentDidMount() {
        AppState.addEventListener('change', this._handleAppStateChange);
    }
 
    componentWillUnmount() {
    	AppState.removeEventListener('change', this._handleAppStateChange);
    }
 
    _handleAppStateChange = (nextAppState) => {
        if (this.state.appState.match(/inactive|background/) && nextAppState === 'active') {
            //App has come to the foreground!
            RNFingerprintChange.hasFingerPrintChanged((error) => {},(fingerprintHasChanged)=>{
            if(fingerprintHasChanged) {
                // do what you need 
            }
        })
        }
        this.setState({appState: nextAppState});
    }
}