question: public void addHeaderView ( View v ) { addHeaderView ( v , null , true ) ; }
target:  Add a fixed view to appear at the top of the grid. If addHeaderView is called more than once, the views will appear in the order they were added. Views added using this call can take focus if they want. <p/> NOTE: Call this before calling setAdapter. This is so HeaderGridView can wrap the supplied cursor with one that will also account for header views.