I assume that you already have experience with Go itself.
My tip for searching for specific Go code:
- Visit GitHub
- In the search box, type:
language:go <keyword1> <keyword2...>
So for your question, try
language:go android
and then (optionally) sort by “Most Stars”. You’ll certainly find a couple of good examples in the search result.
(For convenience, here is the URL of the search result: https://github.com/search?o=desc&q=language%3Ago+android&s=stars&type=Repositories&utf8=✓)
Good luck.