Flutter目录打开插件open_dir_macos的使用

Flutter目录打开插件open_dir_macos的使用

open_dir_macos 是 macOS 版本的 open_dir 插件。该插件允许你通过 Flutter 应用程序打开指定的目录。

使用

此包是 受支持的联合插件，因此你只需要添加 open_dir 包即可使用。你也可以像平常一样添加此包来使用它。

示例代码

以下是一个完整的示例代码，展示了如何使用 open_dir_macos 打开指定的目录。

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:open_dir_macos/open_dir_macos.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> {
  final _openDirPlugin = OpenDirMacOS();

  final _tfDirPathController = TextEditingController();
  final _tfHighlightedFilenameController = TextEditingController();
  final _messengerKey = GlobalKey<ScaffoldMessengerState>();

  [@override](/user/override)
  void dispose() {
    _tfDirPathController.dispose();
    _tfHighlightedFilenameController.dispose();
    super.dispose();
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      scaffoldMessengerKey: _messengerKey,
      home: Scaffold(
        appBar: AppBar(
          title: const Text('打开目录示例'),
        ),
        body: Center(
          child: Container(
            margin: const EdgeInsets.symmetric(horizontal: 16.0),
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                TextField(
                  controller: _tfDirPathController,
                  decoration: InputDecoration(
                    hintText: '目录路径',
                    hintStyle: TextStyle(color: Colors.grey.withOpacity(0.8)),
                  ),
                ),
                TextField(
                  controller: _tfHighlightedFilenameController,
                  decoration: InputDecoration(
                    hintText: '选择文件名',
                    hintStyle: TextStyle(color: Colors.grey.withOpacity(0.8)),
                  ),
                ),
                const SizedBox(height: 16.0),
                ElevatedButton(
                  onPressed: () => _openNativeDirectory(
                    path: _tfDirPathController.text,
                    highlightedFileName: _tfHighlightedFilenameController.text,
                  ),
                  child: const Padding(
                    padding: EdgeInsets.all(8.0),
                    child: Text('打开目录'),
                  ),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }

  _openNativeDirectory({required String path, String? highlightedFileName}) async {
    try {
      final rs = await _openDirPlugin.openNativeDir(
        path: path,
        highlightedFileName: highlightedFileName,
      );
      if (rs == null) {
        throw PlatformException(code: '404', message: '打开目录时发生平台错误: $path');
      }
      if (rs && highlightedFileName != null && highlightedFileName.isNotEmpty) {
        debugPrint('已打开文件: $path 并选择文件名: $highlightedFileName');
        return;
      }
      if (rs) {
        debugPrint('已打开目录: $path');
      } else {
        debugPrint('无法打开目录: $path');
        if (mounted) {
          _messengerKey.currentState?.showSnackBar(SnackBar(
            duration: const Duration(seconds: 1),
            content: Text('无法打开目录: $path'),
          ));
        }
      }
    } on PlatformException catch (e) {
      debugPrint('打开本地目录失败: ${e.message}');
    }
  }
}

说明

1. 导入必要的包：

   import 'package:flutter/cupertino.dart';
   import 'package:flutter/material.dart';
   import 'package:flutter/services.dart';
   import 'package:open_dir_macos/open_dir_macos.dart';
   

2. 初始化控制器：

   final _tfDirPathController = TextEditingController();
   final _tfHighlightedFilenameController = TextEditingController();
   

3. 定义 _openNativeDirectory 方法：

   _openNativeDirectory({required String path, String? highlightedFileName}) async {
     try {
       final rs = await _openDirPlugin.openNativeDir(
         path: path,
         highlightedFileName: highlightedFileName,
       );
       // 处理返回结果
     } on PlatformException catch (e) {
       debugPrint('打开本地目录失败: ${e.message}');
     }
   }
   

4. 在 build 方法中创建 UI：

   [@override](/user/override)
   Widget build(BuildContext context) {
     return MaterialApp(
       scaffoldMessengerKey: _messengerKey,
       home: Scaffold(
         appBar: AppBar(
           title: const Text('打开目录示例'),
         ),
         body: Center(
           child: Container(
             margin: const EdgeInsets.symmetric(horizontal: 16.0),
             child: Column(
               mainAxisAlignment: MainAxisAlignment.center,
               children: [
                 TextField(
                   controller: _tfDirPathController,
                   decoration: InputDecoration(
                     hintText: '目录路径',
                     hintStyle: TextStyle(color: Colors.grey.withOpacity(0.8)),
                   ),
                 ),
                 TextField(
                   controller: _tfHighlightedFilenameController,
                   decoration: InputDecoration(
                     hintText: '选择文件名',
                     hintStyle: TextStyle(color: Colors.grey.withOpacity(0.8)),
                   ),
                 ),
                 const SizedBox(height: 16.0),
                 ElevatedButton(
                   onPressed: () => _openNativeDirectory(
                     path: _tfDirPathController.text,
                     highlightedFileName: _tfHighlightedFilenameController.text,
                   ),
                   child: const Padding(
                     padding: EdgeInsets.all(8.0),
                     child: Text('打开目录'),
                   ),
                 ),
               ],
             ),
           ),
         ),
       ),
     );
   }