flutter_app_auth_wrapper

The package wraps App Auth, an OAuth 2.0 client for native iOS and Android app development, into Flutter. You can use the package to implements Oauth2 Authentication Code Flow in your Flutter app.

Usage

Start oauth flow

FlutterAppAuthWrapper.startAuth(
                      AuthConfig(
                        clientId: clientId,
                        clientSecret: clientSecret,
                        redirectUrl: redirectURL,
                        state: "login",
                        prompt: "consent",
                        endpoint: 
                        AuthEndpoint(auth: authEndpoint, token: tokenEndpoint),
                        scopes: [
                          "user_account_status",
                          "user_territory",
                          "user_profile"
                        ],
                      ),
                    );

Listen result event by FlutterAppAuthWrapper.eventStream().

StreamBuilder(
                initialData: "init state",
                stream: FlutterAppAuthWrapper.eventStream(),
                builder: (context, snapshot) {
                  if (snapshot.hasError) {
                    var error = snapshot.error as PlatformException;
                    return Text("[Error] ${error.message}: ${error.details}");
                  } else {
                    return Text(snapshot.data.toString());
                  }
                },
              )

Setting Up

Android

Support AndroidX. Add following properties into gradle.properties to enable AndroidX support.

android.enableJetifier=true
android.useAndroidX=true

When a custom scheme is used, AppAuth can be easily configured to capture all redirects using this custom scheme through a manifest placeholder:

android.defaultConfig.manifestPlaceholders = [
  'appAuthRedirectScheme': 'com.example.app'
]

Alternatively, the redirect URI can be directly configured by adding an intent-filter for AppAuth's RedirectUriReceiverActivity to your AndroidManifest.xml:

<activity
        android:name="net.openid.appauth.RedirectUriReceiverActivity"
        tools:node="replace">
    <intent-filter>
        <action android:name="android.intent.action.VIEW"/>
        <category android:name="android.intent.category.DEFAULT"/>
        <category android:name="android.intent.category.BROWSABLE"/>
        <data android:scheme="com.example.app"/>
    </intent-filter>
</activity>

For further information, please visit the page of AppAuth Android.

iOS

You need to add your own custom URL scheme to the Info.plist file.

<key>CFBundleURLTypes</key>
<array>
    <dict>
        <key>CFBundleIdentifier</key>
        <string></string>
        <key>CFBundleTypeRole</key>
        <string>Editor</string>
        <key>CFBundleURLSchemes</key>
        <array>
            <string>your_custom_url_scheme</string>
        </array>
    </dict>
</array>

For further information, please visit the page of AppAuth iOS.

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

dependencies:
  flutter_app_auth_wrapper: {last_version}

2. Install it

You can install packages from the command line:

with pub:

$ pub get

with Flutter:

$ flutter packages get

Alternatively, your editor might support pub get or flutter packages get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:flutter_app_auth_wrapper/flutter_app_auth_wrapper.dart';