code: private void initializeLayout() {
          View view = LayoutInflater.from(getContext()).inflate(R.layout.hlklib_emoji_layout, this);
          emojiPager = (ViewPager) view.findViewById(R.id.hlklib_emoji_pages);
          pageIndicator = (LinearLayout) view.findViewById(R.id.hlklib_emoji_page_indicator);
          initializeEmoji();
      }
docs: 初始化layout布局