How to create folder using google drive api in a flutter app?

Question

I have tried to create folder in a flutter app in a google drive account. It shows me a bad argument(s) error. Although i am working with the documentation examples

Here is the code i have tried to do. it generates

"Bad argument(s)" error.

final _SCOPES = [drive.DriveApi.DriveScope];

  void adrive(){

clientViaServiceAccount(_credentials,_SCOPES).then(onValue).catchError((e)=>print(e));
  }


  FutureOr onValue(AuthClient client)  {
    //drive.DriveApi(client).files.list().then((value)=>print(value.items[0]));
    // The previous line works fine
    drive.File r = new drive.File();
    r.mimeType = "application/vnd.google-apps.folder";
    r.title = "hello";

    drive.DriveApi(client).files.insert(r,uploadOptions: commons.UploadOptions.Resumable).then((f)=>print(f.mimeType+" "+f.originalFilename))
          .catchError((ex)=>print(ex.toString()));

anmol.majhail · Accepted Answer · 2019-10-07 20:31:05Z

4

As you have already done Auth credentials, you can use this Simple function to create folder in Google Drive.

clientViaServiceAccount(credentials, scopes).then((http_client) async {
              var _drive = v3.DriveApi(http_client);
              var _createFolder = await _drive.files.create(
                v3.File()
                  ..name = 'FileName'
                  ..parents = ['1f4tjhpBJwF5t6FpYvufTljk8Gapbwajc'] // Optional if you want to create subfolder
                  ..mimeType = 'application/vnd.google-apps.folder',  // this defines its folder
              );
            });

answered Oct 7, 2019 at 20:31

anmol.majhail

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1 Comment

sameer kashyap Over a year ago

I'm unable to create a folder and upload a file to it, the above code does not work, can you help me? I get an Exception telling me the file is not found, which is specified in the parents property

Abdullah Bahattab · Accepted Answer · 2023-06-13 21:06:02Z

0

I'm coming late but I hope I'll make some help for others who want to get folder's id, this code I convert it to a flutter from java code from Google official Google Official Workspace.

First you can make a dart class, to authenticate the user:

import 'package:http/http.dart' as http;

class GoogleAuthClient extends http.BaseClient {
  final Map<String, String> _headers;

  final http.Client _client = http.Client();

  GoogleAuthClient(this._headers);

  @override
  Future<http.StreamedResponse> send(http.BaseRequest request) {
    return _client.send(request..headers.addAll(_headers));
  }
}

Then create the folder function:

import 'package:YOUR_APP_NAME/google_auth_client.dart';
import 'package:googleapis/drive/v3.dart' as drive;
import 'package:google_sign_in/google_sign_in.dart' as signIn;


  Future<String?> createFolder() async {
    final googleSignIn =
        signIn.GoogleSignIn.standard(scopes: [drive.DriveApi.driveScope]);
    final signIn.GoogleSignInAccount? account = await googleSignIn.signIn();
    final authheader = await account?.authHeaders;

    var client = GoogleAuthClient(authheader!);
    var driveFile = drive.DriveApi(client);

    // File's metadata.
    var fileMetadata = drive.File();
    fileMetadata.name = 'test';
    fileMetadata.mimeType = 'application/vnd.google-apps.folder';

    try {
      var file = await driveFile.files.create(fileMetadata);
      print('Folder ID: ${file.id}');
      return file.id;
    } catch (e) {
      // TODO: Handle error appropriately
      print('Unable to create folder: $e');
      rethrow;
    }
  }

This will create the folder and gives you the Folder's ID that you will use to upload the file to it.

answered Jun 13, 2023 at 21:06

Abdullah Bahattab

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2 Comments

user2251369 Over a year ago

Hoe to authenticate the user did you use it directly ?

Abdullah Bahattab Over a year ago

Oh no, to get to google drive authentication I got more steps to follow, I'll try to explain in short, first I add packages as googleapis and google_sing_in then create firebase project and add to it android app so I got need to make SHA1 for firebase, then its automatically created an app in google cloud console with all api keys that we need, also I downloaded the google_service.json from firebase that has all credentials for my app.

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