access photos from Picasa in Android using Google APIs -

I'm trying to bring photos from the Picasa album in Android.

I have used the following link in a reference:

But in the above example, I think that the user only The album can be accessed , while I want to access the pictures, which may require PhotoEntry class, can someone suggest me if I want to find Picasa photos first Android Which files are required for?

I have come to a widget on this source code which uses the Picasa API Gdata api uses libraries I am unable to work to download new library.