IOS如何在Host App 与 App Extension 之间发送通知

// 发送通知- (void)postNotificaiton {CFNotificationCenterRef notification = CFNotificationCenterGetDarwinNotifyCenter ();CFNotificationCenterPostNotification(notification, CFSTR("<notificaiton name>"), NULL,NULL, YES);} // 接收通知- (void)receiveNotification {CFNotificationCenterRef notification = CFNotificationCenterGetDarwinNotifyCenter (); CFNotificationCenterAddObserver(notification, (__bridge const void *)(self), observerMethod,CFSTR("<notificaiton name>"), NULL, CFNotificationSuspensionBehaviorDeliverImmediately); }void observerMethod (CFNotificationCenterRef center, void *observer, CFStringRef name, const void *object, CFDictionaryRef userInfo){ // Your custom work } // 移除通知- (void)removeNotification{CFNotificationCenterRef notification = CFNotificationCenterGetDarwinNotifyCenter ();CFNotificationCenterRemoveObserver(notification, (__bridge const void *)(self), CFSTR("<notificaiton name>"), NULL);}