Xojo Plugin Requires Chilkat v11.0.0+

Facebook Upload Photo from Local File

See more Facebook Examples

Uploads a new photo with a caption from a local file. Xojo Plugin

Dim success As Boolean
success = False

//  This example assumes Chilkat HTTP to have been previously unlocked.
//  See Global Unlock Sample for sample code.

Dim http As New Chilkat.Http

Dim req As New Chilkat.HttpRequest
req.HttpVerb = "POST"
req.ContentType = "multipart/form-data"
req.Path = "/v2.7/me/photos"

//  Use the previously obtained access token.
//  Note: The publish_actions scope is required to upload a photo.
req.AddHeader "Authorization","Bearer FACEBOOK-ACCESS-TOKEN"

//  Send an "Expect: 100-continue" header in the request.
//  This causes the HTTP server to end a 100-continue response
//  immediately after receiving the HTTP header.  The client
//  (Chilkat) will receive this intermediate response, and if
//  it's not an error response, it knows that the HTTP server will
//  accept the data that is forthcoming.
//  The alternative is to get an error response after trying to upload
//  the entire contents of the files.
req.AddHeader "Expect","100-continue"

//  Set a photo caption.
req.AddParam "caption","Here are some penguins!"

//  Additional parameters can be added to the request by 
//  calling AddParam once per parameter.  
//  See https://developers.facebook.com/docs/graph-api/reference/user/photos
//  for more information about other optional parameters.

//  Indicate the local file to be uploaded.
success = req.AddFileForUpload("source","qa_data/jpg/penguins2.jpg")
If (success = False) Then
    System.DebugLog(req.LastErrorText)
    Return
End If

//  Upload the image file..
Dim resp As New Chilkat.HttpResponse
success = http.HttpSReq("graph.facebook.com",443,True,req,resp)
If (success = False) Then
    System.DebugLog(http.LastErrorText)
    Return
End If

//  Examine the response body:
Dim responseJson As String
responseJson = resp.BodyStr
System.DebugLog(responseJson)

//  The response contains JSON, such as this:
//  {"id":"10210224963435862","post_id":"10224048320139890_10210224963435862"}