UILocalNotification *notification=[[UILocalNotification alloc] init];
 if (notification!=nil) {
  NSDate *now=[NSDate new];
  notification.fireDate=[now dateByAddingTimeInterval:15];
  notification.timeZone=[NSTimeZone defaultTimeZone];
  notification.alertBody=@"定时推送通知！";
  notification.soundName = @"default";
  [notification setApplicationIconBadgeNumber:22];
  [[UIApplication sharedApplication] scheduleLocalNotification:notification];
 }

UILocalNotification *notification=[[UILocalNotification alloc] init];
 if (notification!=nil) {//判断系统是否支持本地通知
  notification.fireDate = [NSDate dateWithTimeIntervalSince1970:16*60*60*24];//本次开启立即执行的周期
  notification.repeatInterval=kCFCalendarUnitWeekday;//循环通知的周期
  notification.timeZone=[NSTimeZone defaultTimeZone];
  notification.alertBody=@"哇哇哇";//弹出的提示信息
  notification.applicationIconBadgeNumber=0; //应用程序的右上角小数字
  notification.soundName= UILocalNotificationDefaultSoundName;//本地化通知的声音
//notification.alertAction = NSLocalizedString(@"美女呀", nil); //弹出的提示框按钮
  notification.hasAction = NO;
  [[UIApplication sharedApplication] scheduleLocalNotification:notification];
 }