@4j17h/react-native-phone-number-autofill

Android-only phone number autofill using Google Credentials API. Shows Google account phone numbers AND SIM numbers for better UX.

Why This Library?

Google deprecated the old Credentials API in favor of the new Phone Number Hint API. However:

• Old Credentials API (This Library): Shows Google account numbers + SIM numbers ✅
• New Phone Number Hint API: Only shows SIM-based numbers ❌

This library uses the deprecated-but-working Credentials API (like Zomato does) to provide better UX.

Installation

npm install @4j17h/react-native-phone-number-autofill
# or
yarn add @4j17h/react-native-phone-number-autofill

Android Setup

Add to your project's android/build.gradle:

allprojects {
    configurations.all {
        resolutionStrategy {
            force 'com.google.android.gms:play-services-auth:20.7.0'
        }
    }
}

Usage

import { requestPhoneNumber } from '@4j17h/react-native-phone-number-autofill';

const handlePhoneNumberPicker = async () => {
  try {
    const phoneNumber = await requestPhoneNumber();
    console.log('Selected:', phoneNumber); // e.g., "+919876543210"
  } catch (error) {
    console.log('User cancelled or no numbers available');
  }
};

Example

import React, { useState } from 'react';
import { TextInput, Platform } from 'react-native';
import { requestPhoneNumber } from '@4j17h/react-native-phone-number-autofill';

const LoginScreen = () => {
  const [phone, setPhone] = useState('');

  const handleFocus = async () => {
    if (Platform.OS !== 'android') return;
    
    try {
      const number = await requestPhoneNumber();
      setPhone(number?.slice(-10) || ''); // Last 10 digits
    } catch (error) {
      // User cancelled
    }
  };

  return (
    <TextInput
      value={phone}
      onChangeText={setPhone}
      onFocus={handleFocus}
      placeholder="Phone Number"
      keyboardType="phone-pad"
    />
  );
};

API

requestPhoneNumber(): Promise<string>

Shows Google phone number picker (Android only).

Returns: Phone number in E.164 format (e.g., "+919876543210")

Error Codes:

• ACTIVITY_NULL_ERROR - Activity not available
• ACTIVITY_RESULT_NOOK_ERROR - User cancelled
• NO_PHONE_NUMBERS_ERROR - No numbers found
• SEND_INTENT_ERROR - Failed to show picker
• IOS_NOT_SUPPORTED - Called on iOS

Platform Support

• ✅ Android (minSdk 24+)
• ❌ iOS (use textContentType="telephoneNumber" instead)

Requirements

• React Native >= 0.60
• Android minSdkVersion 24+
• com.google.android.gms:play-services-auth:20.7.0

Technical Details

Uses deprecated Google Credentials API:

• com.google.android.gms.auth.api.credentials.CredentialsClient
• com.google.android.gms.auth.api.credentials.HintRequest

Even though deprecated, these APIs still work in play-services-auth:20.7.0 and provide better UX than the new API.

License

MIT

Credits

Inspired by phone number picker in Zomato and other popular apps.