Download as PDF, PPTX
JW
Uploaded byJohn Wilker
PDF, PPTX11,441 views
NSNotificationCenter vs. AppDelegate
The document compares AppDelegate and NSNotificationCenter in iOS development. AppDelegate serves as the root controller of an application and handles events like startup and shutdown. Delegates allow objects to manipulate each other through callbacks. Notifications allow asynchronous messaging between any objects through NSNotificationCenter by posting and observing notifications. The document provides examples and pros and cons of each approach.
![iPhone Programming [7/17] : Behind the Scene](https://cdn.slidesharecdn.com/ss_thumbnails/07-behindthescene-key-130115102951-phpapp02-thumbnail.jpg?width=640&height=640&fit=bounds)
