title: android: using ActivityGroup to embed activities
body: <p>Im in the conceptualizing/design phase of building an app and i've hit a bit of a snag. Essentially i was looking for a way to embed one activity into the UI of another similar to how a TabHost/TabActivity. There would be a window at the top of the screen which would contain the other activity, and below that would be buttons and controls that are independent of the above activity and should always be visible. The user would be able to navigate from one activity to another in the window without causing any change to the below controls.</p>
  
  <p>While looking into the issue i ran across ActivityGroup, which looked like it would be useful, but how would i implement it? Anyone have experience with ActivityGroup or have another idea?</p>