Are there examples of good Android Twitter clients?

Are there examples of good Android Twitter clients? I would spe开发者_如何转开发cifically like to learn how to handle @ clicks etc.

UPDATE: looking for open source code

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Of course "good" is very subjective.

Zwitscher is my open source client, that runs on Android and uses the Twitter4j api; a binary version has also been posted to the market.

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Here is a sample I made showing how to login with twitter, any other twitter API call would be the same as I do on line 74. As for handling @ click take a look at the Linkify API