Hate to break it to you but it’s likely that the images on the page you like were created with a drawing program, and there are no example to go with them.
Without someone actually going to the effort to create samples for you, your best bet is to go through the samples that come with the android SDK – they will follow the guidelines in most cases.
And remember, they are just guidelines. At the end of the day it’s up to you to create a pleasant and smooth user experience, however you see fit.