typedef NS_OPTIONS(NSUInteger, NSCalendarUnit) {
 NSCalendarUnitEra  = kCFCalendarUnitEra,
 NSCalendarUnitYear  = kCFCalendarUnitYear,
 NSCalendarUnitMonth  = kCFCalendarUnitMonth,
 NSCalendarUnitDay  = kCFCalendarUnitDay,
 NSCalendarUnitHour  = kCFCalendarUnitHour,
 NSCalendarUnitMinute  = kCFCalendarUnitMinute,
 NSCalendarUnitSecond  = kCFCalendarUnitSecond,
 NSCalendarUnitWeekday  = kCFCalendarUnitWeekday,
 NSCalendarUnitWeekdayOrdinal = kCFCalendarUnitWeekdayOrdinal,
 }

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
 // Override point for customization after application launch.
 //如果已经得到授权，就直接添加本地通知，否则申请询问授权
 if ([[UIApplication sharedApplication]currentUserNotificationSettings].types!=UIUserNotificationTypeNone) {
 [self addLocalNotification];
 }else{
 [[UIApplication sharedApplication]registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];
 }
 return YES;
}

-(void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings{
 if (notificationSettings.types!=UIUserNotificationTypeNone) {
 [self addLocalNotification];
 }
}

-(void)addLocalNotification{
 //定义本地通知对象
 UILocalNotification *notification=[[UILocalNotification alloc]init];
 //设置调用时间
 notification.fireDate=[NSDate dateWithTimeIntervalSinceNow:0];//立即触发
 //设置通知属性
 notification.alertBody=@"HELLO，我是本地通知哦!"; //通知主体
 notification.applicationIconBadgeNumber=1;//应用程序图标右上角显示的消息数
 notification.alertAction=@"打开应用"; //待机界面的滑动动作提示 
 notification.soundName=UILocalNotificationDefaultSoundName;//收到通知时播放的声音，默认消息声音
 //调用通知
 [[UIApplication sharedApplication] scheduleLocalNotification:notification];
}

-(void)applicationWillEnterForeground:(UIApplication *)application{
 [[UIApplication sharedApplication]setApplicationIconBadgeNumber:0];//进入前台取消应用消息图标
}