public void setDividerVerticalHeight(int height) { this.mVerticalDividerHeight = height; if (isDefaultItemDecoration && null != mFamiliarDefaultItemDecoration) { mFamiliarDefaultItemDecoration.setVerticalDividerDrawableHeight(mVerticalDividerHeight); if (null != mWrapFamiliarRecyclerViewAdapter) { mWrapFamiliarRecyclerViewAdapter.notifyDataSetChanged(); } } }