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(Excel) Paging User Photos with Cursor

Demonstrates how to iterate over the pages of user photos using a cursor.

Download Excel Class Modules

Chilkat Excel Class Modules

' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

' This example assumes a previously obtained an access token
Dim oauth2 As Chilkat.OAuth2
Set oauth2 = Chilkat.NewOAuth2
oauth2.AccessToken = "FACEBOOK-ACCESS-TOKEN"

Dim rest As Chilkat.Rest
Set rest = Chilkat.NewRest

' Connect to Facebook.

success = rest.Connect("graph.facebook.com",443,True,True)
If (success <> True) Then
    Debug.Print rest.LastErrorText
    Exit Sub
End If

' Provide the authentication credentials (i.e. the access key)
success = rest.SetAuthOAuth2(oauth2)

' Indicate that we only want the photos the user has personally uploaded.
success = rest.AddQueryParam("type","uploaded")

' We could limit the number of photos per page using the "limit" field.
success = rest.AddQueryParam("limit","20")

' Get the 1st page of photos. (Not the actual image data, but the information about each photo.)
' See https://developers.facebook.com/docs/graph-api/reference/user/photos/ for more information.

responseJson = rest.FullRequestNoBody("GET","/v2.7/me/photos")
If (rest.LastMethodSuccess <> True) Then
    Debug.Print rest.LastErrorText
    Exit Sub
End If

Dim json As Chilkat.JsonObject
Set json = Chilkat.NewJsonObject
json.EmitCompact = False
success = json.Load(responseJson)
Debug.Print json.Emit()

' 
' See Parsing the Facebook User Photos for code showing how to parse the JSON photos content.
' 

' Get the "after" cursor.

afterCursor = json.StringOf("paging.cursors.after")
Do While json.LastMethodSuccess = True

    Debug.Print "after cursor: "; afterCursor

    ' Prepare for getting the next page of photos.
    ' We can continue using the same REST object.
    ' If already connected, we'll continue using the existing connection.
    ' Otherwise, a new connection will automatically be made if needed.
    success = rest.ClearAllQueryParams()
    success = rest.AddQueryParam("type","uploaded")
    success = rest.AddQueryParam("limit","20")
    success = rest.AddQueryParam("after",afterCursor)

    responseJson = rest.FullRequestNoBody("GET","/v2.7/me/photos")
    If (rest.LastMethodSuccess <> True) Then
        Debug.Print rest.LastErrorText
        Exit Sub
    End If

    success = json.Load(responseJson)
    ' See Parsing the Facebook User Photos for code showing how to parse the JSON photos content.

    Debug.Print json.Emit()

    ' Get the cursor for the next page.
    afterCursor = json.StringOf("paging.cursors.after")
Loop

Debug.Print "No more pages of photos."

 

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