问题
How to implement: I have UIBarButtonItem with search icon, after click on it, I want to show search bar in navigation bar and on click cancel button in search bar, I want to show navigation bar without search and with buttons and title like in IOS 7 calendar app.
回答1:
from apple documentation:
In iOS 7, UISearchDisplayController includes the displaysSearchBarInNavigationBar property, which you can use to put a search bar in a navigation bar, similar to the one in Calendar on iPhone:
https://developer.apple.com/library/ios/documentation/userexperience/conceptual/TransitionGuide/Bars.html
来源：https://stackoverflow.com/questions/19687938/uisearchdisplaycontroller-like-in-ios-7-calendar-app