cache_systems 0.0.4

This package for flutter is used to cache files in the device. It can be used to cache images, videos, audios, text and other files. It can also be used to cache files from the internet.

example/lib/main.dart

import 'dart:io';
import 'package:cache_systems/cache_systems.dart';
import 'package:flutter/material.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await CacheSystem().init(stalePeriod: const Duration(days: 7));
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      title: 'Cache Systems Demo',
      home: MyHomePage(title: 'Cache Systems Demo'),
    );
  }
}

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

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  List<CacheFile?> files = [];

  @override
  void initState() {
    CacheSystem().getAllFile().then((value) {
      setState(() {
        files = value;
      });
    });

    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    final imgUri = Uri.parse(
      'https://fastly.picsum.photos/id/91/1500/1500.jpg?hmac=gFLcWG7TwMqsOm5ZizQJNJ2tYsENkSQdMMmNNp8Avvs',
    );
    return Scaffold(
      body: Column(
        children: [
          Expanded(
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                // For Image
                Row(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    FutureBuilder<CacheFile?>(
                      future: CacheSystem().get(
                        imgUri,
                        fileType: CacheFileType.image,
                      ),
                      builder: (context, snapshot) {
                        if (snapshot.hasData) {
                          return Padding(
                            padding: const EdgeInsets.all(8.0),
                            child: Image.file(
                              snapshot.data!.file,
                              height: 100,
                              width: 100,
                            ),
                          );
                        }
                        return const SizedBox.shrink();
                      },
                    ),
                    // or use the CachedImage widget
                    CachedImage(url: imgUri, height: 100, width: 100),
                  ],
                ),
              ],
            ),
          ),
          Expanded(
            child: Column(
              children: [
                const Text('Cached Images'),
                Expanded(
                  child: GridView.builder(
                    gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
                      crossAxisCount: 3,
                    ),
                    itemCount: files.length,
                    itemBuilder: (context, index) {
                      final cachefile = files[index];
                      if (cachefile!.fileType != 'image/*') {
                        return const SizedBox.shrink();
                      }
                      return Padding(
                        padding: const EdgeInsets.all(8.0),
                        child: Image.file(
                          cachefile.file,
                          height: 100,
                          width: 100,
                        ),
                      );
                    },
                  ),
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }
}