I am interested as well...
I think Tableau Mobile is available which supports Android 3.2 and up.
But not sure if it supports Android 2.2 also.
Please suggest .
Tableau Mobile for Android connects to Tableau Server and doesn't store actual data on the device. This is rather different from the Reader, yes?
Currently Tableau's Android mobile app is a streamlined interface for Tableau Server (i.e. interacting with Tableau views already published). There is not currently a way to view/interact with Tableau workbooks (.twb or .twbx files) locally/offline on a mobile device.
Many people have requested this feature in our Ideas space here. Our developers love feedback so be sure to vote it up as well.