Android Question OkHttp - Multipart Upload Progressbar

Public Sub PostInputStream(Link As String, In As InputStream, Length As Long)
        req.InitializePost(Link, In, length)
        CallSubDelayed2(HttpUtils2Service, "SubmitJob", Me)
End Sub

Sub timer1_tick
    Log("TICK")
    For Each job As HttpJob In jobs.Values
        Dim jt As JobTag = job.Tag
        If jt.CountingStream.IsInitialized Then
            CallSub3(jt.Data.Target, jt.Data.EventName & "_Progress", _
                jt.CountingStream.Count, jt.Total)
        End If
    Next
End Sub

java.lang.RuntimeException: Object should first be initialized (CountingInputStream).

Public in As InputStream
    Dim data() As Byte= stream.ToBytesArray
    in.InitializeFromBytesArray(data,0,data.Length)
    cin.Initialize(in)
    req.InitializePost(Link,cin,data.Length)

Type JobTag (Data As UploadData,  _
        cin As CountingInputStream, Total As Long)

Sub hc_ResponseSuccess (Response As OkHttpResponse, TaskId As Int)
    ' ********** Modified code *************
    Dim cs As CountingOutputStream
    cs.Initialize(File.OpenOutput(TempFolder, TaskId, False))
    Dim j As HttpJob = TaskIdToJob.Get(TaskId)
    Dim jt As JobTag = j.Tag
    jt.CountingStream = cs
    jt.Total = Response.ContentLength
   
    If jt.Data.url = "" Then
        Log("Job cancelled before downloaded started")
        cs.Close
    End If
    Response.GetAsynchronously("response", cs , _
        True, TaskId)
    '**************************************
End Sub