Authenticator

The Authenticator component adds complete authentication flows to your application with minimal boilerplate.

import React from 'react';
import { Button } from 'react-native';

import { Amplify } from 'aws-amplify';
import { Authenticator, useAuthenticator } from '@aws-amplify/ui-react-native';

import awsExports from './aws-exports';
Amplify.configure(awsExports);

function SignOutButton() {
  const { signOut } = useAuthenticator();
  return <Button title="Sign Out" onPress={signOut} />;
}

function App() {
  return (
    <Authenticator.Provider>
      <Authenticator>
        <SignOutButton />
      </Authenticator>
    </Authenticator.Provider>
  );
}

export default App;

Quick start

Step 1. Configure backend

The Authenticator works seamlessly with the Amplify CLI to automatically work with your backend.

First, update @aws-amplify/cli with npm or yarn if you're using a version before 6.4.0:

Now that you have the Amplify CLI installed, you can set up your Amplify project by running amplify init in your project's root directory. Then run amplify add auth and follow the prompts to add authentication to your backend configuration.

If you have an existing backend, run amplify pull to sync your aws-exports.js with your cloud backend.

You should now have an aws-exports.js file in your src/ directory with your latest backend configuration.

Step 2. Install dependencies

If your project will support Federated Sign In using the React Native Authenticator the @aws-amplify/rtn-web-browser package is also required:

- platform :ios, min_ios_version_supported
+ platform :ios, 13.0

Then install the iOS cocoapods by running:

Step 3. Add the Authenticator

The quickest way to get started is by wrapping your application with the Authenticator component. Once an end-user has created an account & signed in, the underlying component is rendered with access to the user.

You can use the Authenticator component directly, or wrap your app in withAuthenticator Higher-Order Component:

import React from 'react';
import { Button } from 'react-native';

import { Amplify } from 'aws-amplify';
import { Authenticator, useAuthenticator } from '@aws-amplify/ui-react-native';

import awsExports from './aws-exports';
Amplify.configure(awsExports);

function SignOutButton() {
  const { signOut } = useAuthenticator();
  return <Button title="Sign Out" onPress={signOut} />;
}

function App() {
  return (
    <Authenticator.Provider>
      <Authenticator>
        <SignOutButton />
      </Authenticator>
    </Authenticator.Provider>
  );
}

export default App;

import React from 'react';
import { Button } from 'react-native';

import { Amplify } from 'aws-amplify';
import {
  useAuthenticator,
  withAuthenticator,
} from '@aws-amplify/ui-react-native';

import awsconfig from './aws-exports';
Amplify.configure(awsconfig);

function SignOutButton() {
  const { signOut } = useAuthenticator();
  return <Button onPress={signOut} title="Sign Out" />;
}

function App() {
  return <SignOutButton />;
}

export default withAuthenticator(App);

Next steps