Cognito

• source - Cognito Auth plugin AWS
• Amplify Auth provide interface for authinticating users.
• Amplify CLI helps to create and configure the auth category with an authentication provider.

Setup and configure application with Amplify Auth.

Prerequisites

• Android application at least Android SDK 16 with Amplify libraries integrated.

Configure Auth Category

• inside project directory execute the command: $ amplify add auth
• when prompted:

  ? Do you want to use the default authentication and security configuration?
    `Default configuration`
  ? How do you want users to be able to sign in?
    `Username`
  ? Do you want to configure advanced settings?
    `No, I am done.`
  

• push changes to the cloud: amplify push

Install Amplify Libraries

• add dependency to app‘s build.gradle.

  dependencies {
    implementation 'com.amplifyframework:aws-auth-cognito:1.17.4'
  }
  

Initialize Amplify Auth

• Add the Auth plugin before calling Amplify.configure

  Amplify.addPlugin(new AWSCognitoAuthPlugin());
  Amplify.configure(getApplicationContext());
  

  Check the current auth session

• run this from MainActivity’s onCreate method.

  Amplify.Auth.fetchAuthSession(
    result -> Log.i("AmplifyQuickstart", result.toString()),
    error -> Log.e("AmplifyQuickstart", error.toString()));
  

• isSignedIn property of the authSession will be false since we haven’t signed in to the category yet.

Congratulations! You’ve successfully setup AWS Cognito Auth plugin