Partially selected checkbox on Android?
I think you'd be best of with your own implementation. And it will be a fairly simple one, just use the: setOnCheckedChangeListener, here is a simple tutorial that just shows the use of this listeners, you will just implement changing your flags, and setting some of your checkboxes checkable when in the correct state.
http://developer.android.com/guide/topics/ui/controls/checkbox.html
hope it helps!