| import 'package:file_selector/file_selector.dart'; |
| import 'package:flutter/material.dart'; |
| |
| /// Screen that shows an example of openFile |
| class OpenTextPage extends StatelessWidget { |
| void _openTextFile(BuildContext context) async { |
| final XTypeGroup typeGroup = XTypeGroup( |
| label: 'text', |
| extensions: ['txt', 'json'], |
| ); |
| final XFile file = await openFile(acceptedTypeGroups: [typeGroup]); |
| final String fileName = file.name; |
| final String fileContent = await file.readAsString(); |
| |
| await showDialog( |
| context: context, |
| builder: (context) => TextDisplay(fileName, fileContent), |
| ); |
| } |
| |
| @override |
| Widget build(BuildContext context) { |
| return Scaffold( |
| appBar: AppBar( |
| title: Text("Open a text file"), |
| ), |
| body: Center( |
| child: Column( |
| mainAxisAlignment: MainAxisAlignment.center, |
| children: <Widget>[ |
| ElevatedButton( |
| style: ElevatedButton.styleFrom( |
| primary: Colors.blue, |
| onPrimary: Colors.white, |
| ), |
| child: Text('Press to open a text file (json, txt)'), |
| onPressed: () => _openTextFile(context), |
| ), |
| ], |
| ), |
| ), |
| ); |
| } |
| } |
| |
| /// Widget that displays a text file in a dialog |
| class TextDisplay extends StatelessWidget { |
| /// File's name |
| final String fileName; |
| |
| /// File to display |
| final String fileContent; |
| |
| /// Default Constructor |
| TextDisplay(this.fileName, this.fileContent); |
| |
| @override |
| Widget build(BuildContext context) { |
| return AlertDialog( |
| title: Text(fileName), |
| content: Scrollbar( |
| child: SingleChildScrollView( |
| child: Text(fileContent), |
| ), |
| ), |
| actions: [ |
| TextButton( |
| child: const Text('Close'), |
| onPressed: () => Navigator.pop(context), |
| ), |
| ], |
| ); |
| } |
| } |