UNNotificationAction * action = [UNNotificationAction actionWithIdentifier:@"action" title:@"活动标题1" options:UNNotificationActionOptionNone];
UNNotificationAction * action2 = [UNNotificationAction actionWithIdentifier:@"action" title:@"活动标题2" options:UNNotificationActionOptionNone];
UNNotificationAction * action3 = [UNNotificationAction actionWithIdentifier:@"action" title:@"活动标题3" options:UNNotificationActionOptionNone];
UNNotificationAction * action4 = [UNNotificationAction actionWithIdentifier:@"action" title:@"活动标题4" options:UNNotificationActionOptionNone];
UNNotificationCategory * category = [UNNotificationCategory categoryWithIdentifier:@"myNotificationCategoryBtn" actions:@[action,action2,action3,action4] intentIdentifiers:@[] options:UNNotificationCategoryOptionCustomDismissAction];
UNMutableNotificationContent * content = [UNMutableNotificationContent new];
content.badge = @1;
content.body = @"这是iOS10的新通知内容：普通的iOS通知";
//默认的通知提示音
content.sound = [UNNotificationSound defaultSound];
content.subtitle = @"这里是副标题";
content.title = @"这里是通知的标题";
content.categoryIdentifier = @"myNotificationCategoryBtn";
//设置5S之后执行
UNTimeIntervalNotificationTrigger * trigger = [UNTimeIntervalNotificationTrigger triggerWithTimeInterval:5 repeats:NO];
UNNotificationRequest * request = [UNNotificationRequest requestWithIdentifier:@"NotificationDefault" content:content trigger:trigger];
[[UNUserNotificationCenter currentNotificationCenter] setNotificationCategories:[NSSet setWithObjects:category, nil]];
[[UNUserNotificationCenter currentNotificationCenter] addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) {
}];
需要注意，系统模板最多支持添加4个用户交互按钮，如下图：
八、自定义通知模板UI
通过前边的介绍，我们发现通过UserNotification框架开发者已经可以完成许多从来很难实现的效果。然而这都不是UserNotification框架最强大的地方，UserNotification框架最强大的地方在于其可以完全自定义通知的UI界面。
完全自定义通知界面是通过iOS扩展来实现的，首先创建一个新的target，如下图：
