keycloak_flutter 0.0.3

Keycloak client adapter for flutter based on the keycloak-js implementation.

example/lib/main.dart

import 'dart:html';

import 'package:flutter/material.dart';
import 'package:keycloak_flutter/keycloak_flutter.dart';
import 'package:provider/provider.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MultiProvider(
      providers: [
        Provider(
          create: (_) {
            var keycloakService = KeycloakService(KeycloakConfig(
                url: 'http://localhost:8080/auth', // Keycloak auth base url
                realm: 'securegate',
                clientId: 'securegate-frontend'));
            keycloakService.keycloakEventsStream.listen((event) {
              if (event.type == KeycloakEventType.onAuthSuccess) {
                // User is authenticated
              }
            });
            return keycloakService
              ..init(
                initOptions: KeycloakInitOptions(
                  onLoad: 'check-sso',
                  silentCheckSsoRedirectUri:
                      '${window.location.origin}/silent-check-sso.html',
                ),
              );
          },
        ),
      ],
      child: MaterialApp(
        title: 'Keycloak Demo',
        debugShowCheckedModeBanner: false,
        theme: ThemeData(
          // This is the theme of your application.
          //
          // Try running your application with "flutter run". You'll see the
          // application has a blue toolbar. Then, without quitting the app, try
          // changing the primarySwatch below to Colors.green and then invoke
          // "hot reload" (press "r" in the console where you ran "flutter run",
          // or simply save your changes to "hot reload" in a Flutter IDE).
          // Notice that the counter didn't reset back to zero; the application
          // is not restarted.
          primarySwatch: Colors.blue,
        ),
        home: MyHomePage(title: 'Flutter Keycloak demo'),
      ),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key? key, this.title}) : super(key: key);

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final String? title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  KeycloakProfile? _keycloakProfile;
  late KeycloakService _keycloakService;

  void _login() {
    _keycloakService.login(KeycloakLoginOptions(
      redirectUri: '${window.location.origin}',
    ));
  }

  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    WidgetsBinding.instance?.addPostFrameCallback((timeStamp) async {
      _keycloakService.keycloakEventsStream.listen((event) async {
        if (event.type == KeycloakEventType.onAuthSuccess) {
          _keycloakProfile = await _keycloakService.loadUserProfile();
        } else {
          _keycloakProfile = null;
        }
        setState(() {});
      });
      _keycloakProfile = await _keycloakService.loadUserProfile(false);
      setState(() {});
    });
  }

  @override
  Widget build(BuildContext context) {
    _keycloakService = Provider.of(context);
    // This method is rerun every time setState is called, for instance as done
    // by the _incrementCounter method above.
    //
    // The Flutter framework has been optimized to make rerunning build methods
    // fast, so that you can just rebuild anything that needs updating rather
    // than having to individually change instances of widgets.
    return Scaffold(
      appBar: AppBar(
        // Here we take the value from the MyHomePage object that was created by
        // the App.build method, and use it to set our appbar title.
        title: Text(widget.title!),
        actions: [
          IconButton(
              icon: Icon(Icons.logout),
              onPressed: () async {
                await _keycloakService.logout();
              }),
        ],
      ),
      body: Center(
        // Center is a layout widget. It takes a single child and positions it
        // in the middle of the parent.
        child: Column(
          // Column is also a layout widget. It takes a list of children and
          // arranges them vertically. By default, it sizes itself to fit its
          // children horizontally, and tries to be as tall as its parent.
          //
          // Invoke "debug painting" (press "p" in the console, choose the
          // "Toggle Debug Paint" action from the Flutter Inspector in Android
          // Studio, or the "Toggle Debug Paint" command in Visual Studio Code)
          // to see the wireframe for each widget.
          //
          // Column has various properties to control how it sizes itself and
          // how it positions its children. Here we use mainAxisAlignment to
          // center the children vertically; the main axis here is the vertical
          // axis because Columns are vertical (the cross axis would be
          // horizontal).
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              'Welcome ${_keycloakProfile?.username ?? 'Guest'}',
              style: Theme.of(context).textTheme.headline4,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _login,
        tooltip: 'Login',
        child: Icon(Icons.login),
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}