flutter_cache_manager 3.1.1 flutter_cache_manager: ^3.1.1 copied to clipboard
Generic cache manager for flutter. Saves web files on the storages of the device and saves the cache info using sqflite.
import 'package:baseflow_plugin_template/baseflow_plugin_template.dart';
import 'package:example/plugin_example/download_page.dart';
import 'package:example/plugin_example/floating_action_button.dart';
import 'package:flutter/material.dart';
import 'package:flutter/widgets.dart';
import 'package:flutter_cache_manager/flutter_cache_manager.dart';
void main() {
runApp(BaseflowPluginExample(
pluginName: 'Flutter Cache Manager',
githubURL: 'https://github.com/Baseflow/flutter_cache_manager',
pubDevURL: 'https://pub.dev/packages/flutter_cache_manager',
pages: [CacheManagerPage.createPage()],
));
}
const url = 'https://blurha.sh/assets/images/img1.jpg';
/// Example [Widget] showing the functionalities of flutter_cache_manager
class CacheManagerPage extends StatefulWidget {
static ExamplePage createPage() {
return ExamplePage(Icons.save_alt, (context) => CacheManagerPage());
}
@override
_CacheManagerPageState createState() => _CacheManagerPageState();
}
class _CacheManagerPageState extends State<CacheManagerPage> {
Stream<FileResponse> fileStream;
void _downloadFile() {
setState(() {
fileStream = DefaultCacheManager().getFileStream(url, withProgress: true);
});
}
@override
Widget build(BuildContext context) {
if (fileStream == null) {
return Scaffold(
appBar: null,
body: const ListTile(
title: Text('Tap the floating action button to download.')),
floatingActionButton: Fab(
downloadFile: _downloadFile,
),
);
}
return DownloadPage(
fileStream: fileStream,
downloadFile: _downloadFile,
clearCache: _clearCache,
removeFile: _removeFile,
);
}
void _clearCache() {
DefaultCacheManager().emptyCache();
setState(() {
fileStream = null;
});
}
void _removeFile() {
DefaultCacheManager().removeFile(url).then((value) {
print('File removed');
}).onError((error, stackTrace) {
print(error);
});
setState(() {
fileStream = null;
});
}
}