bravegogo的专栏

原文：http://southpeak.github.io/blog/2015/03/14/nsnotificationyu-duo-xian-cheng/ 前几天与同事讨论到NOTIFICATION在多线程下的转发问题，所以就此整理一下。 先来看看官方的文档，是这样写的： In a multithreaded application, notifications are alway

1 步.   dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{                  [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(actionNotifica

1. 后台运行   - (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult result))completionHandler