B4X

List all Pages of Files in Google Drive

See more Google Drive Examples

Demonstrates how iterate over pages to list files in Google Drive.

See Google Drive Files list for more optional HTTP parameters.

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 scope.

Dim gAuth As ChilkatAuthGoogle
gAuth.Initialize("gAuth")
gAuth.AccessToken = "GOOGLE-DRIVE-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)

'  Get 5 results per page for testing.  (The default page size is 100, with a max of 1000.
rest.AddQueryParam("pageSize", "5")

Dim json As ChilkatJsonObject
json.Initialize
Dim i As Int
Dim numFiles As Int

'  Send the request for the 1st page.
Dim jsonResponse As String = rest.FullRequestNoBody("GET", "/drive/v3/files")

Dim pageNumber As Int = 1
Dim pageToken As String
Dim bContinueLoop As Boolean = rest.LastMethodSuccess And (rest.ResponseStatusCode = 200)

Do While bContinueLoop = True

    Log("---- Page " & pageNumber & " ----")

    '  Iterate over each file in the response and show the name, id, and mimeType.
    json.Load(jsonResponse)

    '  See the sample JSON response at the bottom of this example.
    numFiles = json.SizeOfArray("files")
    i = 0
    Do While i < numFiles
        json.I = i
        Log("name: " & json.StringOf("files[i].name"))
        Log("id: " & json.StringOf("files[i].id"))
        Log("mimeType: " & json.StringOf("files[i].mimeType"))
        Log("-")
        i = i + 1
    Loop

    '  Get the next page of files.
    '  If the "nextPageToken" is present in the JSON response, then use it in the "pageToken" parameter
    '  for the next request.   If no "nextPageToken" was present, then this was the last page of files.
    pageToken = json.StringOf("nextPageToken")
    bContinueLoop = False
    Dim bHasMorePages As Boolean = json.LastMethodSuccess
    If bHasMorePages = True Then
        rest.ClearAllQueryParams
        rest.AddQueryParam("pageSize", "5")
        rest.AddQueryParam("pageToken", pageToken)
        jsonResponse = rest.FullRequestNoBody("GET", "/drive/v3/files")
        bContinueLoop = rest.LastMethodSuccess And (rest.ResponseStatusCode = 200)
        pageNumber = pageNumber + 1
    End If


Loop

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


'  A successful JSON response looks like this:
'  {
'   "kind": "drive#fileList",
'   "files": [
'     {
'       "kind": "drive#file",
'       "id": "0B53Q6OSTWYolenpjTEU4ekJlQUU",
'       "name": "test",
'       "mimeType": "application/vnd.google-apps.folder"
'     },
'     {
'       "kind": "drive#file",
'       "id": "0B53Q6OSTWYolRm4ycjZtdXhRaEE",
'       "name": "starfish4.jpg",
'       "mimeType": "image/jpeg"
'     },
'     {
'       "kind": "drive#file",
'       "id": "0B53Q6OSTWYolMWt2VzN0Qlo1UjA",
'       "name": "hamlet2.xml",
'       "mimeType": "text/xml"
'     },
'  ...
'     {
'       "kind": "drive#file",
'       "id": "0B53Q6OSTWYolc3RhcnRlcl9maWxlX2Rhc2hlclYw",
'       "name": "Getting started",
'       "mimeType": "application/pdf"
'     }
'   ]
'  }