1.app 第一次打开时调用的代理
__-[AppDelegate application:willFinishLaunchingWithOptions:]
__-[AppDelegate application:didFinishLaunchingWithOptions:]
__-[AppDelegate applicationDidBecomeActive:]
2.
app 切换到其他应用
__-[AppDelegate applicationWillResignActive:]
__-[AppDelegate applicationDidEnterBackground:]
__-[AppDelegate applicationWillEnterForeground:]
__-[AppDelegate applicationDidBecomeActive:]
3.home键切换的时候
__-[AppDelegate applicationWillResignActive:]
4.收到电话或者下拉选择栏的时候
_-[AppDelegate applicationWillResignActive:]
5.收到通知
6.杀死app
[AppDelegate applicationWillResignActive:]
[AppDelegate applicationDidEnterBackground:]
__-[AppDelegate applicationWillTerminate:]
