How to create folder and files in google drive using swift - ios

Question

I am using google drive SDK for folder creation, but unable to create. I am able to login and get all files and folder but unable to create it.
I am using swift and used this code
let metaData = GTLRDrive_File()
metaData.name = "xyz"
metaData.mimeType = "application/vnd.google-apps.folder"
let querys = GTLRDriveQuery_FilesCreate.query(withObject: metaData, uploadParameters: nil)
querys.fields = "id"
//service.executeQuery(querys, delegate: self, didFinish: nil)
self.service.executeQuery(querys) { (ticket:GTLRServiceTicket, object:Any?, error:Error?) in
// Put your completion code here
}
But unable to create folder. Can anyone help me out. Thanks in advance.

Answer 1

func chilkatTest() {
var success: Bool = true
// It requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// This example uses a previously obtained access token having permission for the
// Google Drive scope.
let gAuth = CkoAuthGoogle()
gAuth.AccessToken = "GOOGLE-DRIVE-ACCESS-TOKEN"
let rest = CkoRest()
// Connect using TLS.
var bAutoReconnect: Bool = true
success = rest.Connect("www.googleapis.com", port: 443, tls: true, autoReconnect: bAutoReconnect)
// Provide the authentication credentials (i.e. the access token)
rest.SetAuthGoogle(gAuth)
// -------------------------------------------------------------------------
// A multipart upload to Google Drive needs a multipart/related Content-Type
rest.AddHeader("Content-Type", value: "multipart/related")
// Specify each part of the request.
// The 1st part is JSON with information about the file.
rest.PartSelector = "1"
rest.AddHeader("Content-Type", value: "application/json; charset=UTF-8")
let json = CkoJsonObject()
json.AppendString("name", value: "testHello.txt")
json.AppendString("description", value: "A simple file that says Hello World.")
json.AppendString("mimeType", value: "text/plain")
// To place the file in a folder, we must add a parents[] array to the JSON
// and list the folder id's. It's possible for a file to be in multiple folders at once
// if it has more than one parent. If no parents are specified, then the file is created
// in the My Drive folder.
// Note: We'll assume we already have the id if the folder. It is the id's that are specified here,
// not the folder names.
var parents: CkoJsonArray? = json.AppendArray("parents")
var folderId: String? = "0B53Q6OSTWYolY2tPU1BnYW02T2c"
parents!.AddStringAt(-1, value: folderId)
parents = nil
rest.SetMultipartBodyString(json.Emit())
// The 2nd part is the file content, which will contain "Hello World!"
rest.PartSelector = "2"
rest.AddHeader("Content-Type", value: "text/plain")
var fileContents: String? = "Hello World!"
rest.SetMultipartBodyString(fileContents)
var jsonResponse: String? = rest.FullRequestMultipart("POST", uriPath: "/upload/drive/v3/files?uploadType=multipart")
if rest.LastMethodSuccess != true {
print("\(rest.LastErrorText)")
return
}
// A successful response will have a status code equal to 200.
if rest.ResponseStatusCode.integerValue != 200 {
print("response status code = \(rest.ResponseStatusCode.integerValue)")
print("response status text = \(rest.ResponseStatusText)")
print("response header: \(rest.ResponseHeader)")
print("response JSON: \(jsonResponse!)")
return
}
// Show the JSON response.
json.Load(jsonResponse)
// Show the full JSON response.
json.EmitCompact = false
print("\(json.Emit())")
// A successful response looks like this:
// {
// "kind": "drive#file",
// "id": "0B53Q6OSTWYoldmJ0Z3ZqT2x5MFk",
// "name": "Untitled",
// "mimeType": "text/plain"
// }
// Get the fileId:
print("fileId: \(json.StringOf("id"))")
}
Link for libraries needed:-
Download libraries
Include CkoAuthGoogle, CkoRest and CkoJsonObject header files in your project.

Answer 2

It is basically due to the scope, I have to give kGTLRAuthScopeDriveFile in scope area
private let scopes = [kGTLRAuthScopeDriveReadonly,kGTLRAuthScopeDriveFile]
and rest same in google
func folder(){
let metadata = GTLRDrive_File()
metadata.name = "eBilling"
metadata.mimeType = "application/vnd.google-apps.folder"
let querys = GTLRDriveQuery_FilesCreate.query(withObject: metadata, uploadParameters: nil)
querys.fields = "id"
self.service.executeQuery(querys, completionHandler: {(ticket:GTLRServiceTicket, object:Any?, error:Error?) in
if error == nil {
self.listFiles()
}
else {
print("An error occurred: \(error)")
}
})
}

Answer 3

Swift 5
If you are looking to just create a folder without uploading a file with it,
I was able to create a drive folder using Google's REST endpoint like this.
This function takes the auth token and a filename and parameters to create a URLRequest that can then be sent off within a URLSession.
func createFolderRequest(authToken: String, folderName: String) -> URLRequest {
let headers = [
"Content-Type": "multipart/related; boundary=123456789",
"Authorization": "Bearer " + authToken
]
let body =
"""
--123456789
Content-Type: application/json
{
"name": "\(folderName)",
"mimeType": "application/vnd.google-apps.folder"
}
--123456789--
"""
var request = URLRequest(url: URL(string: "https://www.googleapis.com/upload/drive/v3/files")!)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = body.data(using: .utf8)
request.addValue(String(body.lengthOfBytes(using: .utf8)), forHTTPHeaderField: "Content-Length")
return request
}
I referenced the google docs for multipart file uploads here