flutter_locker 1.0.2

Secures your secrets in keychain using biometric authentication (Fingerprint, Touch ID, Face ID...)

example/lib/main.dart

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'dart:async';

import 'package:flutter/services.dart';
import 'package:flutter_locker/flutter_locker.dart';
import 'package:flutter_locker/gen/protos/flutter_locker.pb.dart';

void main() {
  runApp(MaterialApp(home: Scaffold(body: MyApp())));
}

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

class _MyAppState extends State<MyApp> {
  String key = 'pwdkey';
  String secret = '1111';

  Future<void> _canAuthenticate(BuildContext context) async {
    FlutterLocker.canAuthenticate().then((value) {
      Scaffold.of(context).showSnackBar(
          SnackBar(content: Text('Can authenticate: ' + value.toString())));
    }).catchError((err) {
      Scaffold.of(context).showSnackBar(
          SnackBar(content: Text('Error happened: ' + err.toString())));
    });
  }

  Future<void> _saveSecret(BuildContext context) async {
    FlutterLocker.save(SaveSecretRequest(
            key, secret, AndroidPrompt('Authenticate', 'Cancel')))
        .then((value) {
      Scaffold.of(context).showSnackBar(
          SnackBar(content: Text('Successfully Saved Secret: $secret')));
    }).catchError((err) {
      Scaffold.of(context).showSnackBar(
          SnackBar(content: Text('Error happened: ' + err.toString())));
    });
  }

  Future<void> _retrieveSecret(BuildContext context) async {
    FlutterLocker.retrieve(RetrieveSecretRequest(key,
            AndroidPrompt('Authenticate', 'Cancel'), IOsPrompt('Authenticate')))
        .then((value) {
      Scaffold.of(context)
          .showSnackBar(SnackBar(content: Text('Retrieved secret: ' + value)));
    }).catchError((err) {
      Scaffold.of(context).showSnackBar(
          SnackBar(content: Text('Error happened: ' + err.toString())));
    });
  }

  Future<void> _deleteSecret(BuildContext context) async {
    FlutterLocker.delete(key).then((value) {
      Scaffold.of(context)
          .showSnackBar(SnackBar(content: Text('Secret deleted.')));
    }).catchError((err) {
      Scaffold.of(context).showSnackBar(
          SnackBar(content: Text('Error happened: ' + err.toString())));
    });
  }

  @override
  Widget build(BuildContext context) {
    return SafeArea(
      child: Column(
        children: <Widget>[
          SizedBox(height: 100),
          Center(
            child: Text(
              'Locker example',
              style: TextStyle(fontSize: 24),
            ),
          ),
          SizedBox(height: 40),
          CupertinoButton.filled(
              child: Text('Can authenticate'),
              onPressed: () {
                _canAuthenticate(context);
              }),
          SizedBox(height: 20),
          CupertinoButton.filled(
              child: Text('Save secret'),
              onPressed: () {
                _saveSecret(context);
              }),
          SizedBox(height: 20),
          CupertinoButton.filled(
              child: Text('Retrieve secret'),
              onPressed: () {
                _retrieveSecret(context);
              }),
          SizedBox(height: 20),
          CupertinoButton.filled(
              child: Text('Delete secret'),
              onPressed: () {
                _deleteSecret(context);
              })
        ],
      ),
    );
  }
}