flutter_cache_manager 1.0.0 flutter_cache_manager: ^1.0.0 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:flutter/material.dart';
import 'package:flutter_cache_manager/flutter_cache_manager.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
FileInfo fileInfo;
_downloadFile() {
var url =
'https://cdn2.online-convert.com/example-file/raster%20image/png/example_small.png';
DefaultCacheManager().getFile(url).listen((f) {
setState(() {
fileInfo = f;
});
});
}
@override
Widget build(BuildContext context) {
var path = "N/A";
if (fileInfo?.file != null) {
path = fileInfo.file.path;
}
var from = "N/A";
if (fileInfo != null) {
from = fileInfo.source.toString();
}
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
'Local filePath:',
),
Text(
path,
),
Text(
'From: $from',
),
Padding(
padding: const EdgeInsets.only(top: 32.0),
child: RaisedButton(
child: Text('CLEAR CACHE'),
onPressed: () {
DefaultCacheManager().emptyCache();
},
),
)
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _downloadFile,
tooltip: 'Download',
child: Icon(Icons.add),
), // This trailing comma makes auto-formatting nicer for build methods.
);
}
}