B4X

Search for Files in Google Drive

See more Google Drive Examples

This example follows the same methodology for listing all files in Google Drive in pages, but applies a search filter. It shows how to apply a query parameter for filtering the file results. See the 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")

'  Our search filter is to list all files containing ".jpg" (i.e. all JPG image files)
rest.AddQueryParam("q", "name contains '.jpg'")

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)

    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)
        rest.AddQueryParam("q", "name contains '.jpg'")

        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