Android Camera, internal Listoption?

When you are taking a picture on an and device, you can send it. There are apps, which are pushing their actions into these开发者_JAVA技巧 send-list (Like Twidroid, which adds a listitem called "Send Tweet" in that menu).

So, how is it possible to add such a menu point into that menu? For my app, I want to make it possible to take pictures from both (The App itself and via the real camera-send-list) and save them on the sdcard.

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So, how is it possible to add such a menu point into that menu?

Write an activity that implements an ACTION_SEND <intent-filter>, perhaps for camera-related MIME types.