Flutter文件选择插件simple_filepicker_windows的使用

Flutter文件选择插件simple_filepicker_windows的使用

simple_filepicker_windows 是一个用于 Windows 平台的简单文件选择插件，无需任何依赖（希望如此）。

使用方法

import 'package:simple_filepicker_windows/simple_filepicker_windows.dart';

void main() {
  final files = SimpleFilepickerWindows.showFilePicker(["*.png", "*.pdf", "myfile.*", "mydocument.txt"], pickMultiple: false);
  print(files); // 输出选中的文件路径
}

版本历史

• 1.0.0 - 初始发布
• 1.0.0+7 - 支持 null 安全
• 1.0.0+8 - 小修复

完整示例 Demo

以下是一个完整的 Flutter 应用示例，演示如何使用 simple_filepicker_windows 插件来选择文件：

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'dart:async';

import 'package:flutter/services.dart';
import 'package:simple_filepicker_windows/simple_filepicker_windows.dart';

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

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

  [@override](/user/override)
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  List<String>? _selectedFiles;

  [@override](/user/override)
  void initState() {
    super.initState();
    initPlatformState();
  }

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    // Platform messages may fail, so we use a try/catch PlatformException.
    // We also handle the message potentially returning null.
    try {
      _selectedFiles = await SimpleFilepickerWindows.showFilePicker(['*.jpg', '*.png'], pickMultiple: true);
    } on PlatformException {
      if (kDebugMode) {
        print('Failed to get platform version.');
      }
    }

    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    if (!mounted) return;

    setState(() {});
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('文件选择插件示例'),
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
              ElevatedButton(
                onPressed: () {
                  initPlatformState();
                },
                child: const Text('选择文件'),
              ),
              if (_selectedFiles != null)
                Padding(
                  padding: const EdgeInsets.all(8.0),
                  child: Text('选中的文件：\n${_selectedFiles!.join('\n')}\n'),
                ),
            ],
          ),
        ),
      ),
    );
  }
}