simple_secure_storage 0.4.2

Simple and secure storage for Flutter. Supports Android, iOS, macOS, Windows and web !

example/lib/main.dart

import 'dart:async';

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:simple_secure_storage/simple_secure_storage.dart';

/// Hello world !
Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await SimpleSecureStorage.initialize(WebInitializationOptions(keyPassword: 'password', encryptionSalt: 'salt'));
  runApp(const SimpleSecureStorageExampleApp());
}

/// The main app widget.
class SimpleSecureStorageExampleApp extends StatefulWidget {
  /// Creates a new widget instance.
  const SimpleSecureStorageExampleApp({
    super.key,
  });

  @override
  State<SimpleSecureStorageExampleApp> createState() => _SimpleSecureStorageExampleAppState();
}

/// The widget state.
class _SimpleSecureStorageExampleAppState extends State<SimpleSecureStorageExampleApp> {
  /// The increment count.
  int count = 0;

  /// Whether the storage has the "count" key.
  bool has = false;

  @override
  void initState() {
    super.initState();
    refreshIncrementCount();
  }

  /// Platform messages are asynchronous, so we initialize in an async method.
  Future<void> refreshIncrementCount() async {
    bool has = await SimpleSecureStorage.has('count');
    int count = has ? int.parse((await SimpleSecureStorage.read('count'))!) : 0;
    if (kDebugMode) {
      print('---------------------------------');
      print(await SimpleSecureStorage.list());
      print('---------------------------------');
    }
    if (mounted) {
      setState(() {
        this.count = count;
        this.has = has;
      });
    }
  }

  @override
  Widget build(BuildContext context) => MaterialApp(
    home: Scaffold(
      appBar: AppBar(
        title: const Text('SimpleSecureStorage example app'),
      ),
      body: SizedBox(
        width: MediaQuery.of(context).size.width,
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          crossAxisAlignment: CrossAxisAlignment.center,
          children: [
            Padding(
              padding: const EdgeInsets.only(bottom: 16),
              child: Text('Increment count : ${has ? count : 'no yet incremented !'}'),
            ),
            Padding(
              padding: const EdgeInsets.only(bottom: 8),
              child: OutlinedButton(
                onPressed: () async {
                  int count = this.count + 1;
                  await SimpleSecureStorage.write('count', count.toString());
                  await SimpleSecureStorage.write('another_value', 'Hello world !');
                  await refreshIncrementCount();
                },
                child: const Text('Increment and save'),
              ),
            ),
            Padding(
              padding: const EdgeInsets.only(bottom: 8),
              child: OutlinedButton(
                onPressed: () async {
                  await SimpleSecureStorage.delete('count');
                  await refreshIncrementCount();
                },
                child: const Text('Delete'),
              ),
            ),
            OutlinedButton(
              onPressed: () async {
                await SimpleSecureStorage.clear();
                await refreshIncrementCount();
              },
              child: const Text('Clear'),
            ),
          ],
        ),
      ),
    ),
  );
}