如何让外部用户通过Flutter应用程序编辑我的GoogleDrive中的表格？

1. 首先，需要通过Google API Console创建一个项目并添加Google Drive API和Google Sheets API。然后生成OAuth 2.0凭证，用于允许应用程序访问用户的Drive帐户和表格数据。
2. 在Flutter应用程序中添加googleapis和googleapis_auth库，并使用以下代码示例获取授权并读取表格数据：

import 'dart:async';
import 'dart:io';

import 'package:googleapis_auth/auth_io.dart' as auth;
import 'package:googleapis/sheets/v4.dart' as sheets;

Future<List<List<dynamic>>> readSheet(String docId, String sheetName) async {
  // Load the default client ID and secret from the Google Cloud Console.
  final clientId = new auth.ClientId(
      "<CLIENT_ID>", "<CLIENT_SECRET>");

  // Request the user's authorization to access their Google Sheets data.
  final scopes = <String>[sheets.SheetsApi.SpreadsheetsScope];
  final client = await auth.clientViaUserConsent(clientId, scopes, prompt);

  // Use the Google Sheets API client to read data from the spreadsheet.
  final api = new sheets.SheetsApi(client);
  final range = "${sheetName}!A1:Z1000";
  final response = await api.spreadsheets.values.get(docId, range);
  return response.values;
}

void prompt(String url) {
  print("Please visit the following URL to grant access:");
  print("  => $url");
  print("");
}

// Example usage:
void main() async {
  final docId = "your_spreadsheet_id";
  final sheetName = "Sheet1";
  final rows = await readSheet(docId, sheetName);
  print(rows);
}

3. 要实现外部用户编辑表格的权限，需要将标志“Sharing Settings: Anyone with the link can edit”设置为true。您可以借助以下代码示例实现：

import 'package:googleapis/drive/v3.dart' as drive;

Future share(String docId) async {
  // Load the default client ID and secret from the Google Cloud Console.
  final clientId