code: private IcsListPopupWindow getListPopupWindow() {
          if (mListPopupWindow == null) {
              mListPopupWindow = new IcsListPopupWindow(getContext());
              mListPopupWindow.setAdapter(mAdapter);
              mListPopupWindow.setAnchorView(ActivityChooserView.this);
              mListPopupWindow.setModal(true);
              mListPopupWindow.setOnItemClickListener(mCallbacks);
              mListPopupWindow.setOnDismissListener(mCallbacks);
          }
          return mListPopupWindow;
      }
docs: Gets the list popup window which is lazily initialized.
  
  @return The popup.