/** Show the last element in the list of adapters */
 private void showList() {
   if (mAdapters.isEmpty() || mAdapters.getLast().isEmpty()) {
     mList.setEmptyView(mEmptyLibrary);
   } else {
     LibraryAdapter adapter = mAdapters.getLast();
     adapter.getFilter().filter(mLastFilter);
     mList.setAdapter(adapter);
     if (adapter.isEmpty() || adapter.getCount() == 0) {
       buildSubActionBar("", "");
     } else {
       MyLibraryItem item = adapter.getItem(0);
       switch (item.getLevel()) {
         case MyLibrary.LVL_ARTIST:
           buildSubActionBar("", "");
           break;
         case MyLibrary.LVL_ALBUM:
           buildSubActionBar(item.getArtist(), "");
           break;
         default:
           buildSubActionBar(item.getArtist(), item.getAlbum());
           break;
       }
     }
   }
 }