local_auth_wall 1.0.1

Local Auth wall redirect user to a widget when authenticated and another if not.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:local_auth_wall/local_auth_wall.dart';
import 'package:local_auth_wall/src/auth_wall_notifier.dart';
import 'package:provider/provider.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/services.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  SystemChrome.setPreferredOrientations(
      [DeviceOrientation.portraitDown, DeviceOrientation.portraitUp]);

  runApp(MyApp());
}

/// Widget to show when Not Authorized
class NotAuthorizedState extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
        primary: false,
        body: Container(
          color: Colors.blue,
          alignment: Alignment.center,
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            crossAxisAlignment: CrossAxisAlignment.center,
            children: [
              Text("Please authorize to access"),
              TextButton(
                  onPressed: () {
                    context.read<AuthWallNotifier>().authorizeRoute(
                        AuthWallDefaultStates.defaultRoute.toString(),
                        "pleas"
                        "e authorize to access");
                  },
                  child: Icon(Icons.security))
            ],
          ),
        ));
  }
}

///
class OnBootState extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
        primary: false,
        body: Container(
          color: Colors.orange,
          alignment: Alignment.center,
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            crossAxisAlignment: CrossAxisAlignment.center,
            children: [
              Text("Please wait,"),
            ],
          ),
        ));
  }
}

/// Widget to show when hardware requirements not meet...
class NotSupportedState extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
        primary: false,
        body: Container(
          color: Colors.blue,
          alignment: Alignment.center,
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            crossAxisAlignment: CrossAxisAlignment.center,
            children: [
              Text("Sorry, this device is not supported, please, auth using "
                  "the below alternative."),
              TextButton(
                  onPressed: () {
                    ///Call here...
                  },
                  child: Icon(Icons.security))
            ],
          ),
        ));
  }
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        builder: (BuildContext, child) {
          return LocalAuthWall(
            appConf: {
              AuthWallConfProperty.defaultHelpText: "Please, authorize to "
                  "access.",
              AuthWallConfProperty.autoAuthRootRoute: true,
              AuthWallConfProperty.resetRootRouteOnAnyUnAuthorized: false,
            },
            stateWallWidgets: {
              AuthWallDefaultStates.booting: OnBootState(),
              AuthWallDefaultStates.unauthorized: NotAuthorizedState(),
              AuthWallDefaultStates.unsupported: NotSupportedState(),

              /// child here provided by Flutter MaterialApp, normally the
              /// home route, in this case: MyHomePage
              AuthWallDefaultStates.defaultRoute: child ??
                  Container(
                    alignment: Alignment.center,
                    color: Colors.amber,
                    child: Text("Something is wrong, "
                        "where is my Home Widget??"),
                  )
            },
          );
        },
        title: 'Flutter Demo',
        theme: ThemeData(
          primarySwatch: Colors.blue,
        ),
        home: MyHomePage(title: 'Flutter Demo Home Page'));
  }
}

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

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

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title!),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          crossAxisAlignment: CrossAxisAlignment.center,
          children: <Widget>[
            TextButton(
                onPressed: () {
                  context.read<AuthWallNotifier>().authorizeRoute(
                      AuthWallDefaultStates.defaultRoute.toString());
                },
                child: Text(" Tap to authorize Default Route")),
            Text(
              'Default Route authorized: ${context.watch<AuthWallNotifier>().routeIsAuthorized(AuthWallDefaultStates.defaultRoute.toString())}',
            ),
            Text(
              'Hardware supported: ${context.watch<AuthWallNotifier>().isSupported}',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.headline4,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          context
              .read<AuthWallNotifier>()
              .authorizeRoute(
                  "show_ballance", "Please, authorize to see wallet balance")
              .then((_) {
            if (context
                .read<AuthWallNotifier>()
                .routeIsAuthorized("show_ballance")) {
              ScaffoldMessenger.of(context).showSnackBar(SnackBar(
                backgroundColor: Colors.green,
                elevation: 4,
                dismissDirection: DismissDirection.down,
                content: SizedBox(
                  height: 60,
                  child: Row(
                    crossAxisAlignment: CrossAxisAlignment.center,
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: [
                      Padding(
                        padding: const EdgeInsets.all(8.0),
                        child: Icon(Icons.security),
                      ),
                      Expanded(
                        child: Text(
                          "Nice, authorized with sucess!",
                          style: TextStyle(fontSize: 18),
                        ),
                      )
                    ],
                  ),
                ),
              ));
            } else {
              ScaffoldMessenger.of(context).showSnackBar(SnackBar(
                backgroundColor: Colors.red,
                elevation: 4,
                dismissDirection: DismissDirection.down,
                content: SizedBox(
                  height: 60,
                  child: Row(
                    crossAxisAlignment: CrossAxisAlignment.center,
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: [
                      Padding(
                        padding: const EdgeInsets.all(8.0),
                        child: Icon(Icons.security),
                      ),
                      Expanded(
                        child: Text(
                          "Sorry, NOT authorized with sucess!",
                          style: TextStyle(fontSize: 18),
                        ),
                      )
                    ],
                  ),
                ),
              ));
            }
          });
        },
        tooltip: 'Balance',
        child: Icon(Icons.balance),
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}