question: public void addFooterView ( View v , Object data , boolean isSelectable ) { FixedViewInfo info = new FixedViewInfo ( ) ; info . view = v ; info . data = data ; info . isSelectable = isSelectable ; mFooterViewInfos . add ( info ) ; if ( mAdapter != null && mDataSetObserver != null ) { mDataSetObserver . onChanged ( ) ; } }
target:  Add a fixed view to appear at the bottom of the list. If addFooterView 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 ListView can wrap the supplied cursor with one that will also account for header and footer views.