一、鍵盤
1、UIKeyboardWillShowNotification-將要彈出鍵盤
2、UIKeyboardDidShowNotification-顯示鍵盤
3、UIKeyboardWillHideNotification-將要隱藏鍵盤
4、UIKeyboardDidHideNotification-鍵盤已經隱藏
5、UIKeyboardWillChangeFrameNotification-鍵盤將要改變frame
6、UIKeyboardDidChangeFrameNotification-鍵盤已經改變frame

二、窗口
1、UIWindowDidBecomeVisibleNotification-窗口可見
2、UIWindowDidBecomeHiddenNotification-窗口隱藏
3、UIWindowDidBecomeKeyNotification
4、UIWindowDidResignKeyNotification
三、程序消息
1、UIApplicationDidBecomeActiveNotification-程序從後台激活
2、UIApplicationDidChangeStatusBarFrameNotification-狀態欄frame改變
3、UIApplicationDidChangeStatusBarOrientationNotification-狀態欄方向改變
4、UIApplicationDidEnterBackgroundNotification-進入後台
5、UIApplicationDidFinishLaunchingNotification-程序加載完成
6、UIApplicationDidReceiveMemoryWarningNotification-內存警告
7、UIApplicationProtectedDataDidBecomeAvailable
8、UIApplicationProtectedDataWillBecomeUnavailable
9、UIApplicationSignificantTimeChangeNotification 重要的時間變化（新的一天開始或時區變化）
10、UIApplicationWillChangeStatusBarOrientationNotification-將要改變狀態欄方向
11、UIApplicationWillChangeStatusBarFrameNotification-將要改變狀態欄frame
12、UIApplicationWillEnterForegroundNotification
13、UIApplicationWillResignActiveNotification
14、UIApplicationWillTerminateNotification

四、電池、方向、傳感器
1、UIDeviceBatteryLevelDidChangeNotification //電池電量
2、UIDeviceBatteryStateDidChangeNotification //電池狀態
3、UIDeviceOrientationDidChangeNotification //方向
4、UIDeviceProximityStateDidChangeNotification //近距離傳感器

五、音視頻
1、MPMediaLibraryDidChangeNotification
2、MPMusicPlayerControllerPlaybackStateDidChangeNotification
3、MPMusicPlayerControllerNowPlayingItemDidChangeNotification
4、MPMusicPlayerControllerVolumeDidChangeNotification

六、其他
1、NSUserDefaultsDidChangeNotification 用戶默認設置變化
2 NSCurrentLocaleDidChangeNotification 本地化語言變化