silence_0313的博客

通知中心需要熟悉NSNotificationCenter和NSNotification两个类： NSNotificationCenter：是通知系统的中心，下表列出常用的方法。 - (void)addObserver:(id)observer selector:(SEL)aSelector name:(NSString *)aName object:(id)anObject

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {     // Override point for customization after application launch.     //想APNS（苹果推送服务器）注

#import "AppDelegate.h" @interface AppDelegate () @end @implementation AppDelegate - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOp