Flutter 开发鸿蒙应用时三方库引入指南

import 'package:file_selector/file_selector.dart';
import 'package:file_picker/file_picker.dart'; //导入filepicker

    appBar: AppBar(
      title: const Text('legado_flutter'),
      actions: <Widget>[
        //导航栏右侧菜单
        IconButton(
            icon: const Icon(Icons.add),
            onPressed: () async {
              //往下开始用filepick提供的方法
              FilePickerResult? result =
                  await FilePicker.platform.pickFiles(
                type: FileType.custom,
                allowedExtensions: ['txt'], //筛选文件类型
              );
              //这就用完了，下面就赋值了
              if (result != null) {
                PlatformFile file = result.files.first;
                aasd = file.path; //取数据，有name，path，size等等，这就取个文件地址

                setState(() {
                  //刷新界面显示数据,否则下面的text不更新
                });
              } else {
                // User canceled the picker
              }
            }),
      ],
      // leading: Builder(builder: (context) {
      //   return IconButton(
      //     icon: Icon(Icons.dashboard, color: Colors.white), //自定义图标
      //     onPressed: () {
      //       // 打开抽屉菜单
      //       Scaffold.of(context).openDrawer();
      //     },
      //   );
      // })
    ),

  file_picker:
    git:
      url: "https://gitcode.com/openharmony-sig/fluttertpc_file_picker.git"
  file_picker_ohos:
    git:
      url: "https://gitcode.com/openharmony-sig/fluttertpc_file_picker.git"
      path: "ohos"