ফ্লাটার অ্যাপ থেকে ফাইল সেভ করা

  document_file_save_plus:
    git:
      url: https://github.com/advoques/document_file_save_plus

import 'dart:typed_data';
import 'package:document_file_save_plus/document_file_save_plus.dart';
import 'package:flutter/material.dart';
import 'dart:convert';

void main() {
  runApp(const MyApp());
}

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

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: const Text('document_file_save_plus Plugin')),
        body: const Center(
          child: Text(
            'Please check file in Download folder (or Files App in iOS)',
          ),
        ),
        floatingActionButton: Builder(
          builder:
              (context) => FloatingActionButton(
                onPressed: () => _saveFile(context),
                tooltip: 'Save File',
                child: const Icon(Icons.add),
              ),
        ),
      ),
    );
  }

  void _saveFile(BuildContext context) async {
    List<int> textBytes = utf8.encode("Some data");
    Uint8List textBytes1 = Uint8List.fromList(textBytes);

    try {
      await DocumentFileSavePlus().saveFile(
        textBytes1,
        "new file with permission.html",
        "text/html",
      );

      ScaffoldMessenger.of(
        context,
      ).showSnackBar(const SnackBar(content: Text("File saved successfully!")));
    } catch (e) {
      ScaffoldMessenger.of(
        context,
      ).showSnackBar(SnackBar(content: Text("Failed to save file: $e")));
    }
  }
}

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />