+ (void)registerLocalNotification:(NSInteger)alertTime {

UILocalNotification *notification = [[UILocalNotification alloc] init];

// 设置触发通知的时间

NSDate *fireDate = [NSDate dateWithTimeIntervalSinceNow:alertTime];

NSLog(@"fireDate=%@",fireDate);

notification.fireDate = fireDate;

// 时区

notification.timeZone = [NSTimeZone defaultTimeZone];

// 设置重复的间隔

notification.repeatInterval = kCFCalendarUnitSecond;

// 通知内容

notification.alertBody =  @"该起床了...";

notification.applicationIconBadgeNumber = 1;

// 通知被触发时播放的声音

notification.soundName = UILocalNotificationDefaultSoundName;

// 通知参数

NSDictionary *userDict = [NSDictionary dictionaryWithObject:@"开始学习iOS开发了" forKey:@"key"];

notification.userInfo = userDict;

// ios8后，需要添加这个注册，才能得到授权

if ([[UIApplication sharedApplication] respondsToSelector:@selector(registerUserNotificationSettings:)]) {

UIUserNotificationType type =  UIUserNotificationTypeAlert | UIUserNotificationTypeBadge | UIUserNotificationTypeSound;

UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:type

categories:nil];

[[UIApplication sharedApplication] registerUserNotificationSettings:settings];

// 通知重复提示的单位，可以是天、周、月

notification.repeatInterval = NSCalendarUnitDay;

} else {

// 通知重复提示的单位，可以是天、周、月

notification.repeatInterval = NSDayCalendarUnit;

}

// 执行通知注册

[[UIApplication sharedApplication] scheduleLocalNotification:notification];

}