flutter_local_auth_invisible 2.0.0

flutter_local_auth_invisible: ^2.0.0 copied to clipboard

example/lib/main.dart

// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'dart:async';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_local_auth_invisible/flutter_local_auth_invisible.dart';

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

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  final LocalAuthentication auth = LocalAuthentication();
  bool _canCheckBiometrics = false;
  List<BiometricType>? _availableBiometrics;
  String _authorized = 'Not Authorized';

  Future<void> _checkBiometrics() async {
    bool canCheckBiometrics = false;
    try {
      canCheckBiometrics = await auth.canCheckBiometrics;
    } on PlatformException catch (e) {
      print(e);
    }
    if (!mounted) return;

    setState(() {
      _canCheckBiometrics = canCheckBiometrics;
    });
  }

  Future<void> _getAvailableBiometrics() async {
    List<BiometricType> availableBiometrics = <BiometricType>[];
    try {
      availableBiometrics = await auth.getAvailableBiometrics();
    } on PlatformException catch (e) {
      print(e);
    }
    if (!mounted) return;

    setState(() {
      _availableBiometrics = availableBiometrics;
    });
  }

  Future<void> _authenticate() async {
    bool authenticated = false;
    try {
      authenticated = await auth.authenticateWithBiometrics(
        localizedReason: 'Scan your fingerprint to authenticate',
        useErrorDialogs: true,
        stickyAuth: false,
      );
    } on PlatformException catch (e) {
      print(e);
    }
    if (!mounted) return;

    setState(() {
      _authorized = authenticated ? 'Authorized' : 'Not Authorized';
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Plugin example app'),
        ),
        body: ConstrainedBox(
          constraints: const BoxConstraints.expand(),
          child: Column(
            mainAxisAlignment: MainAxisAlignment.spaceAround,
            children: <Widget>[
              Text('Can check biometrics: $_canCheckBiometrics\n'),
              // ignore: deprecated_member_use
              RaisedButton(
                child: const Text('Check biometrics'),
                onPressed: _checkBiometrics,
              ),
              Text('Available biometrics: $_availableBiometrics\n'),
              // ignore: deprecated_member_use
              RaisedButton(
                child: const Text('Get available biometrics'),
                onPressed: _getAvailableBiometrics,
              ),
              Text('Current State: $_authorized\n'),
              // ignore: deprecated_member_use
              RaisedButton(
                child: const Text('Authenticate'),
                onPressed: _authenticate,
              )
            ],
          ),
        ),
      ),
    );
  }
}