问题
What is the difference between Search Bar vs. Search Bar & Search Display Controller?
回答1:
The Search Bar + Search Display Controller includes other bits of functionality like loading a results table view, showing the "no results" view if nothing is set, etc.
来源：https://stackoverflow.com/questions/3379613/what-is-the-difference-between-search-bar-vs-search-bar-search-display-contro