filesystem_picker 2.0.0-nullsafety.0
filesystem_picker: ^2.0.0-nullsafety.0 copied to clipboard
FileSystem file or folder picker dialog. Allows the user to browse the file system and pick a folder or file.
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:filesystem_picker/filesystem_picker.dart';
import 'package:path_provider/path_provider.dart';
import 'package:permission_handler/permission_handler.dart';
void main() => runApp(MyApp());
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
static _MyAppState? of(BuildContext context) {
return context.findAncestorStateOfType<_MyAppState>();
}
}
class _MyAppState extends State<MyApp> {
Brightness _brightness = Brightness.light;
Brightness get brightness => _brightness;
void setThemeBrightness(Brightness brightness) {
setState(() {
_brightness = brightness;
});
}
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'FileSystem Picker Demo',
theme: ThemeData(
primarySwatch: Colors.teal,
accentColor: Colors.white,
buttonTheme: ButtonThemeData(
buttonColor: Colors.teal,
textTheme: ButtonTextTheme.accent,
),
toggleableActiveColor: Colors.teal,
brightness: _brightness,
),
home: DemoPage(),
);
}
}
class DemoPage extends StatefulWidget {
@override
_DemoPageState createState() => _DemoPageState();
}
class _DemoPageState extends State<DemoPage> {
Directory? rootPath;
String? filePath;
String? dirPath;
FileTileSelectMode filePickerSelectMode = FileTileSelectMode.checkButton;
@override
void initState() {
_prepareStorage();
super.initState();
}
Future<void> _prepareStorage() async {
rootPath = await getTemporaryDirectory();
// Create sample directory if not exists
Directory sampleFolder = Directory('${rootPath!.path}/Sample folder');
if (!sampleFolder.existsSync()) {
sampleFolder.createSync();
}
// Create sample file if not exists
File sampleFile = File('${sampleFolder.path}/Sample.txt');
if (!sampleFile.existsSync()) {
sampleFile.writeAsStringSync('FileSystem Picker sample file.');
}
setState(() {});
}
Future<void> _openFile(BuildContext context) async {
String? path = await FilesystemPicker.open(
title: 'Open file',
context: context,
rootDirectory: rootPath!,
fsType: FilesystemType.file,
folderIconColor: Colors.teal,
allowedExtensions: ['.txt'],
fileTileSelectMode: filePickerSelectMode,
requestPermission: () async =>
await Permission.storage.request().isGranted,
);
if (path != null) {
File file = File('$path');
String contents = await file.readAsString();
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text(contents),
),
);
}
setState(() {
filePath = path;
});
}
Future<void> _pickDir(BuildContext context) async {
String? path = await FilesystemPicker.open(
title: 'Save to folder',
context: context,
rootDirectory: rootPath!,
fsType: FilesystemType.folder,
pickText: 'Save file to this folder',
folderIconColor: Colors.teal,
requestPermission: () async =>
await Permission.storage.request().isGranted,
);
setState(() {
dirPath = path;
});
}
@override
Widget build(BuildContext context) {
final appState = MyApp.of(context);
return Scaffold(
body: Builder(
builder: (context) => Center(
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 20),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
// Theme Brightness Switch Button
ElevatedButton(
child: Text((appState!.brightness == Brightness.light)
? 'Switch to Dark theme'
: 'Switch to Light theme'),
onPressed: () {
appState.setThemeBrightness(
appState.brightness == Brightness.light
? Brightness.dark
: Brightness.light);
},
),
Divider(height: 60),
// Directory picker section
Padding(
padding: const EdgeInsets.only(bottom: 20),
child: Text(
'Directory Picker',
style: Theme.of(context).textTheme.headline5,
),
),
if (dirPath != null)
Padding(
padding: const EdgeInsets.symmetric(vertical: 10),
child: Text('$dirPath'),
),
ElevatedButton(
child: Text('Save File'),
onPressed:
(rootPath != null) ? () => _pickDir(context) : null,
),
Divider(height: 60),
// File picker section
Padding(
padding: const EdgeInsets.only(bottom: 20),
child: Text(
'File Picker',
style: Theme.of(context).textTheme.headline5,
),
),
if (filePath != null)
Padding(
padding: const EdgeInsets.symmetric(vertical: 10),
child: Text('$filePath'),
),
ElevatedButton(
child: Text('Open File'),
onPressed:
(rootPath != null) ? () => _openFile(context) : null,
),
Padding(
padding: const EdgeInsets.only(top: 10),
child: CheckboxListTile(
title: Text('Whole item selection mode'),
controlAffinity: ListTileControlAffinity.leading,
value: filePickerSelectMode == FileTileSelectMode.wholeTile,
onChanged: (bool? newValue) => {
setState(() {
filePickerSelectMode = newValue!
? FileTileSelectMode.wholeTile
: FileTileSelectMode.checkButton;
})
},
),
),
],
),
),
),
),
);
}
}