B4X

Upload Application Specific Data

See more Google Drive Examples

Uploads a text file (application specific data) where the contents of the file are contained in a string variable. B4X

Dim success As Boolean = False

success = 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 application specific data scope.
Dim jsonToken As ChilkatJsonObject
jsonToken.Initialize
success = jsonToken.LoadFile("qa_data/tokens/googleDriveAppData.json")

Dim gAuth As ChilkatAuthGoogle
gAuth.Initialize("gAuth")
gAuth.AccessToken = jsonToken.StringOf("access_token")

Dim rest As ChilkatRest
rest.Initialize("rest")

'  Connect using TLS.
Dim bAutoReconnect As Boolean = True
success = rest.Connect("www.googleapis.com", 443, True, 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", "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", "application/json; charset=UTF-8")

Dim json As ChilkatJsonObject
json.Initialize
json.EmitCompact = False

json.UpdateString("name", "helloWorld.txt")
json.UpdateString("description", "A simple text file that says Hello World.")
json.UpdateString("mimeType", "text/plain")
'  Specifiy the application-specific data folder.
json.UpdateString("parents[0]", "appDataFolder")
rest.SetMultipartBodyString(json.Emit)

Log(json.Emit)

'  The JSON looks like this:
'  {
'    "name": "helloWorld.txt",
'    "description": "A simple text file that says Hello World.",
'    "mimeType": "text/plain",
'    "parents": [
'      "appDataFolder"
'    ]
'  }

'  The 2nd part is the file content.
'  In this case, we'll upload a simple text file containing "Hello World!"
rest.PartSelector = "2"
rest.AddHeader("Content-Type", "text/plain")

Dim fileContents As String = "Hello World!"
rest.SetMultipartBodyString(fileContents)

Dim jsonResponse As String = rest.FullRequestMultipart("POST", "/upload/drive/v3/files?uploadType=multipart")
If rest.LastMethodSuccess <> True Then
    Log(rest.LastErrorText)
    Return
End If


'  A successful response will have a status code equal to 200.
If rest.ResponseStatusCode <> 200 Then
    Log("response status code = " & rest.ResponseStatusCode)
    Log("response status text = " & rest.ResponseStatusText)
    Log("response header: " & rest.ResponseHeader)
    Log("response JSON: " & jsonResponse)
    Return
End If


'  Show the JSON response.
json.Load(jsonResponse)

'  Show the full JSON response.
json.EmitCompact = False
Log(json.Emit)

'  A successful response looks like this:
'  {
'    "kind": "drive#file",
'    "id": "0B53Q6OSTWYoldmJ0Z3ZqT2x5MFk",
'    "name": "Untitled",
'    "mimeType": "text/plain"
'  }

'  Get the fileId:
Log("fileId: " & json.StringOf("id"))