BaasBox does not provide the progress of an uploading file

[kcochibili]

When uploading fies that around 10mb or more, I need to provide some progress to the user so that they would know the current status of an uploading file.
in my case , I am uploading a file > 30mb.

as a workaround, How can I get the upload url for a BaasFile so that I can upload the file using this library https://github.com/alexbbb/android-upload-service