FileUpload Vaadin & Phonegap

Hello everyone, hope somebody is able to assist with my quest. The goal is to upload files located in the storage on a mobile device with access through phonegap and upload them to a Vaadin server. So far I found two possible solutions. Either use phonegap’s fileTransfer implementation, which requires to have URL to upload the files to, or Vaadins fileUpload, which has no access to the locale storage on a mobile device. Any experiences, hints or suggestions to share for this topic?