Edit post picture 2 to prove it work.
code snippet to create directory , file
new Directory('/storage/emulated/0/MyFile').create()
// The created directory is returned as a Future.
.then((Directory directory) {
print(directory.path);
});
new File('/storage/emulated/0/MyFile/test.txt').create(recursive: true)
.then((File file) {
// Stuff to do after file has been created...
print('${file.path}');
});
var dir = Directory('/storage/emulated/0/MyFile');
print('${dir.path}');
print('${dir.list().toList()}');
full code for create directory and file
import 'package:flutter/material.dart';
import 'dart:io';
import 'package:simple_permissions/simple_permissions.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
// This is the theme of your application.
//
// Try running your application with "flutter run". You'll see the
// application has a blue toolbar. Then, without quitting the app, try
// changing the primarySwatch below to Colors.green and then invoke
// "hot reload" (press "r" in the console where you ran "flutter run",
// or simply save your changes to "hot reload" in a Flutter IDE).
// Notice that the counter didn't reset back to zero; the application
// is not restarted.
primarySwatch: Colors.blue,
),
home: MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
// This widget is the home page of your application. It is stateful, meaning
// that it has a State object (defined below) that contains fields that affect
// how it looks.
// This class is the configuration for the state. It holds the values (in this
// case the title) provided by the parent (in this case the App widget) and
// used by the build method of the State. Fields in a Widget subclass are
// always marked "final".
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
int _counter = 0;
void _incrementCounter() {
new Directory('/storage/emulated/0/MyFile').create()
// The created directory is returned as a Future.
.then((Directory directory) {
print(directory.path);
});
new File('/storage/emulated/0/MyFile/test.txt').create(recursive: true)
.then((File file) {
// Stuff to do after file has been created...
print('${file.path}');
});
var dir = Directory('/storage/emulated/0/MyFile');
print('${dir.path}');
print('${dir.list().toList()}');
setState(() {
// This call to setState tells the Flutter framework that something has
// changed in this State, which causes it to rerun the build method below
// so that the display can reflect the updated values. If we changed
// _counter without calling setState(), then the build method would not be
// called again, and so nothing would appear to happen.
_counter++;
});
}
@override
Widget build(BuildContext context) {
SimplePermissions.requestPermission(Permission.WriteExternalStorage);
// This method is rerun every time setState is called, for instance as done
// by the _incrementCounter method above.
//
// The Flutter framework has been optimized to make rerunning build methods
// fast, so that you can just rebuild anything that needs updating rather
// than having to individually change instances of widgets.
return Scaffold(
appBar: AppBar(
// Here we take the value from the MyHomePage object that was created by
// the App.build method, and use it to set our appbar title.
title: Text(widget.title),
),
body: Center(
// Center is a layout widget. It takes a single child and positions it
// in the middle of the parent.
child: Column(
// Column is also a layout widget. It takes a list of children and
// arranges them vertically. By default, it sizes itself to fit its
// children horizontally, and tries to be as tall as its parent.
//
// Invoke "debug painting" (press "p" in the console, choose the
// "Toggle Debug Paint" action from the Flutter Inspector in Android
// Studio, or the "Toggle Debug Paint" command in Visual Studio Code)
// to see the wireframe for each widget.
//
// Column has various properties to control how it sizes itself and
// how it positions its children. Here we use mainAxisAlignment to
// center the children vertically; the main axis here is the vertical
// axis because Columns are vertical (the cross axis would be
// horizontal).
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
'You have pushed the button this many times:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.display1,
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),
), // This trailing comma makes auto-formatting nicer for build methods.
);
}
}
please use package flutter_file_manager https://pub.dev/packages/flutter_file_manager
I have tested with real device, it works fine
full code
// framework
import 'dart:async';
import 'dart:io';
import 'package:flutter/material.dart';
// packages
import 'package:flutter_file_manager/flutter_file_manager.dart';
import 'package:path_provider/path_provider.dart';
import 'package:path/path.dart' as p;
import 'package:simple_permissions/simple_permissions.dart';
void main() => runApp(new MyApp());
@immutable
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
//SimplePermissions.requestPermission(Permission.ReadExternalStorage);
SimplePermissions.requestPermission(Permission.WriteExternalStorage);
return new MaterialApp(
home: Scaffold(
appBar: AppBar(
title: Text("Flutter File Manager Demo"),
),
body: FutureBuilder(
future: _files(), // a previously-obtained Future<String> or null
builder: (BuildContext context, AsyncSnapshot snapshot) {
switch (snapshot.connectionState) {
case ConnectionState.none:
return Text('Press button to start.');
case ConnectionState.active:
case ConnectionState.waiting:
return Text('Awaiting result...');
case ConnectionState.done:
if (snapshot.hasError)
return Text('Error: ${snapshot.error}');
return snapshot.data != null
? ListView.builder(
itemCount: snapshot.data.length,
itemBuilder: (context, index) => Card(
child: ListTile(
title: Column(children: [
Text('Size: ' +
snapshot.data[index]
.statSync()
.size
.toString()),
Text('Path: ' +
snapshot.data[index].path.toString()),
Text('Date: ' +
snapshot.data[index]
.statSync()
.modified
.toUtc()
.toString())
]),
subtitle: Text(
"Extension: ${p.extension(snapshot.data[index].absolute.path).replaceFirst('.', '')}"), // getting extension
)))
: Center(
child: Text("Nothing!"),
);
}
return null; // unreachable
},
)),
);
}
_files() async {
var root = await getExternalStorageDirectory();
var files = await FileManager(root: root).walk().toList();
for(var i = 0;i<files.length;i++) {
print("${files[i].path} ");
}
return files;
}
}
working demo in emulator
