public void addDatatransferProgressListener(OnDatatransferProgressListener listener,OCUpload ocUpload){
  if (ocUpload == null || listener == null)   return;
  String targetKey=buildRemoteName(ocUpload.getAccountName(),ocUpload.getRemotePath());
  mBoundListeners.put(targetKey,listener);
}

public void addDatatransferProgressListener ( OnDatatransferProgressListener listener , OCUpload ocUpload ) { if ( ocUpload == null || listener == null ) return ; String targetKey = buildRemoteName ( ocUpload . getAccountName ( ) , ocUpload . getRemotePath ( ) ) ; mBoundListeners . put ( targetKey , listener ) ; }
adds a listener interested in the progress of the upload for a concrete file .
