new AlertDialog.Builder(SearchResults.this)
        .setTitle("Refine") 
        .setItems(/*catNames*/,new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog,int which) {
                /* User clicked so do some stuff */
                String catName = catNames[which];
                String categoryIds = subCats.get(catName);
            })
            .setNegativeButton("Cancel",int whichButton) {
                //do nothing just dispose
            }
        })
        .create().show();