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React native sms verification without additional permissions

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react-native-otp-verify

This package uses Automatic SMS Verification with the SMS Retriever API. With the SMS Retriever API, you can perform SMS-based user verification in your Android app automatically, without requiring the user to manually type verification codes, and without requiring any extra app permissions.

Message Format/Structure

In order to detect the message, SMS message must include a hash that identifies your app. This hash can be obtained by using the getHash() method below.

Please read the official documentation for the message structure at this Google developer guide

Getting started

$ npm install react-native-otp-verify --save or $ yarn react-native-otp-verify

Mostly automatic installation

$ react-native link react-native-otp-verify

Manual installation

Android

  1. Open up android/app/src/main/java/[...]/MainActivity.java
  • Add import com.faizal.OtpVerify.RNOtpVerifyPackage; to the imports at the top of the file
  • Add new RNOtpVerifyPackage() to the list returned by the getPackages() method
  1. Append the following lines to android/settings.gradle:
    include ':react-native-otp-verify'
    project(':react-native-otp-verify').projectDir = new File(rootProject.projectDir, 	'../node_modules/react-native-otp-verify/android')
  2. Insert the following lines inside the dependencies block in android/app/build.gradle:
      compile project(':react-native-otp-verify')

Usage

import RNOtpVerify from 'react-native-otp-verify';

getHash = () =>
    RNOtpVerify.getHash()
    .then(console.log)
    .catch(console.log);

startListeningForOtp = () =>
    RNOtpVerify.getOtp()
    .then(p => RNOtpVerify.addListener(this.otpHandler))
    .catch(p => console.log(p));

 otpHandler = (message: string) => {
        const otp = /(\d{4})/g.exec(message)[1];
        this.setState({ otp });
        RNOtpVerify.removeListener();
        Keyboard.dismiss();
}

 componentWillUnmount() {
    RNOtpVerify.removeListener();
 }

Methods


getOtp():Promise<boolean>

Start listening for OTP/SMS. Return true if listener starts else throws error.


getOtp():Promise<boolean>

Start listening for OTP/SMS. Return true if listener starts else throws error.


getHash():Promise<string[]>

Gets the hash code for the application which should be added at the end of message. This is just a one time process.


addListener(handler:(message:string)=>any):Promise<boolean>

Adds a javascript listener to the handler passed which is called when message is received.


removeListener():void

Removes the listener.


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