flutter_easy_tools 1.0.3

flutter_easy_tools: ^1.0.3 copied to clipboard

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:flutter_easy_tools/file_handler.dart';

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

class FileHandlerExampleApp extends StatelessWidget {
  const FileHandlerExampleApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Easy Tools Example',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.blue),
        useMaterial3: true,
      ),
      home: const FileHandlerExamplePage(),
    );
  }
}

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

  @override
  State<FileHandlerExamplePage> createState() => _FileHandlerExamplePageState();
}

class _FileHandlerExamplePageState extends State<FileHandlerExamplePage> {
  String _status = 'Ready';
  double _downloadProgress = 0.0;
  String? _downloadedFilePath;
  bool _isDownloading = false;

  final TextEditingController _urlController = TextEditingController(
    text: 'https://www.w3.org/WAI/ER/tests/xhtml/testfiles/resources/pdf/dummy.pdf',
  );

  @override
  void dispose() {
    _urlController.dispose();
    super.dispose();
  }

  Future<void> _requestPermissions() async {
    setState(() => _status = 'Requesting storage permissions...');
    try {
      final hasPermission = await FileHandler.requestStoragePermission();
      setState(() {
        _status = hasPermission 
            ? '✅ Storage permission granted!' 
            : '❌ Storage permission denied';
      });
    } catch (e) {
      setState(() => _status = '❌ Error: $e');
    }
  }

  Future<void> _downloadFile() async {
    if (_isDownloading) return;
    
    setState(() {
      _status = 'Starting download...';
      _downloadProgress = 0.0;
      _isDownloading = true;
    });

    try {
      final directory = await FileHandler.getApplicationDocumentsDirectory();
      final fileName = _urlController.text.split('/').last;
      
      final filePath = await FileHandler.downloadFile(
        url: _urlController.text,
        fileName: fileName,
        directory: directory,
        onProgress: (progress) {
          setState(() {
            _downloadProgress = progress / 100.0;
            _status = 'Downloading: ${progress.toStringAsFixed(1)}%';
          });
        },
      );

      setState(() {
        _isDownloading = false;
        if (filePath != null) {
          _downloadedFilePath = filePath;
          _status = '✅ Download complete!\nPath: $filePath';
        } else {
          _status = '❌ Download failed';
        }
      });
    } catch (e) {
      setState(() {
        _isDownloading = false;
        _status = '❌ Error: $e';
      });
    }
  }

  Future<void> _checkFileExistence() async {
    if (_downloadedFilePath == null) {
      setState(() => _status = 'No file path available. Download a file first.');
      return;
    }

    try {
      final exists = await FileHandler.fileExists(_downloadedFilePath!);
      setState(() {
        _status = exists 
            ? '✅ File exists at:\n$_downloadedFilePath' 
            : '❌ File does not exist';
      });
    } catch (e) {
      setState(() => _status = '❌ Error checking file: $e');
    }
  }

  Future<void> _deleteFile() async {
    if (_downloadedFilePath == null) {
      setState(() => _status = 'No file path available. Download a file first.');
      return;
    }

    try {
      final deleted = await FileHandler.deleteFile(_downloadedFilePath!);
      setState(() {
        if (deleted) {
          _status = '✅ File deleted successfully';
          _downloadedFilePath = null;
          _downloadProgress = 0.0;
        } else {
          _status = '❌ Failed to delete file';
        }
      });
    } catch (e) {
      setState(() => _status = '❌ Error deleting file: $e');
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Flutter Easy Tools Example'),
        centerTitle: true,
      ),
      body: SingleChildScrollView(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: [
            // URL Input
            TextField(
              controller: _urlController,
              decoration: const InputDecoration(
                labelText: 'File URL',
                border: OutlineInputBorder(),
                hintText: 'Enter a file URL to download',
              ),
            ),
            const SizedBox(height: 16),

            // Permission Button
            ElevatedButton(
              onPressed: _requestPermissions,
              style: ElevatedButton.styleFrom(
                padding: const EdgeInsets.symmetric(vertical: 16),
              ),
              child: const Text('Request Storage Permission'),
            ),
            const SizedBox(height: 16),

            // Download Button
            ElevatedButton(
              onPressed: _isDownloading ? null : _downloadFile,
              style: ElevatedButton.styleFrom(
                backgroundColor: Colors.blue,
                foregroundColor: Colors.white,
                padding: const EdgeInsets.symmetric(vertical: 16),
              ),
              child: _isDownloading 
                  ?  Row(
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: const [
                        SizedBox(
                          width: 20,
                          height: 20,
                          child: CircularProgressIndicator(
                            strokeWidth: 2,
                            valueColor: AlwaysStoppedAnimation<Color>(Colors.white),
                          ),
                        ),
                        SizedBox(width: 8),
                        Text('Downloading...'),
                      ],
                    )
                  : const Text('Download File'),
            ),
            const SizedBox(height: 16),

            // Progress Indicator
            if (_downloadProgress > 0 && _downloadProgress < 1)
              Column(
                children: [
                  LinearProgressIndicator(value: _downloadProgress),
                  const SizedBox(height: 8),
                  Text(
                    '${(_downloadProgress * 100).toStringAsFixed(1)}%',
                    textAlign: TextAlign.center,
                  ),
                  const SizedBox(height: 8),
                ],
              ),

            // File Actions
            if (_downloadedFilePath != null) ...[
              const SizedBox(height: 16),
              const Text(
                'File Actions:',
                style: TextStyle(
                  fontWeight: FontWeight.bold,
                  fontSize: 16,
                ),
              ),
              const SizedBox(height: 8),
              Row(
                children: [
                  Expanded(
                    child: OutlinedButton(
                      onPressed: _checkFileExistence,
                      child: const Text('Check File'),
                    ),
                  ),
                  const SizedBox(width: 8),
                  Expanded(
                    child: OutlinedButton(
                      onPressed: _deleteFile,
                      style: OutlinedButton.styleFrom(
                        foregroundColor: Colors.red,
                        side: const BorderSide(color: Colors.red),
                      ),
                      child: const Text('Delete File'),
                    ),
                  ),
                ],
              ),
            ],

            // Status Display
            const SizedBox(height: 24),
            const Text(
              'Status:',
              style: TextStyle(
                fontWeight: FontWeight.bold,
                fontSize: 16,
              ),
            ),
            const SizedBox(height: 8),
            Container(
              width: double.infinity,
              padding: const EdgeInsets.all(12),
              decoration: BoxDecoration(
                color: Colors.grey[200],
                borderRadius: BorderRadius.circular(8),
              ),
              child: SelectableText(
                _status,
                style: const TextStyle(fontFamily: 'monospace'),
              ),
            ),
          ],
        ),
      ),
    );
  }
}