koush/UrlImageViewHelper — pull request #44 by EaseTheWorld (2013-01-13 02:05:43+00:00)
Title: Disable disk cache for Content Scheme Url 

Disable disk cache for Content Scheme Url
(except ContactsContract.Contacts.CONTENT_URI)

if url starts with content scheme, set filename and file to null then
mDefaultDownloader.download() -> just call loader.run() -> loadDrawableFromUrl()