UILocationNotification不遵守夏令时 [英] UILocationNotification not obeying daylight savings

问题描述

我正在安排像这样的本地通知

I am scheduling local notifications like so

+ (void) addLocalNotification: (Event *) event {
  UILocalNotification *localNotif = [[UILocalNotification alloc] init];
  localNotif.fireDate = event.scheduleTime;
  localNotif.alertBody = @"Time to apply drops\nPlease press view to see details";
  localNotif.soundName = ALARM_SOUND_FILE;
  localNotif.timeZone = [NSTimeZone localTimeZone];
  localNotif.applicationIconBadgeNumber = 1;
  NSDictionary * dict = [NSDictionary    dictionaryWithObjectsAndKeys:event.number,LN_EVENT_KEY,  ACTION_EVENT, LN_ACTION_KEY,  nil];
  localNotif.userInfo = dict;
  [[UIApplication sharedApplication] scheduleLocalNotification:localNotif];
}

然而，在上周末时钟前进之后，在时钟前进之前排定的通知将在一个小时后触发，即19:00而不是18:00

However after the clocks went forward this last weekend, the notifications scheduled before the clocks went forward are firing an hour later, ie 19:00 instead of 18:00

苹果文档说要获取挂钟"时间，请按上述设置时区.

The apple documentation says to get "wall clock" time set the time zone as above.

欢迎任何建议.

推荐答案

因此，与其添加我使用过的24小时时间间隔..

So rather than adding a time interval of 24 hours I have used ..

+ (NSDate *) addOneDayToDate: (NSDate *) date {
   return [currentCalendar dateByAddingComponents:oneDay toDate:date options:0];
}

其中

 oneDay = [[NSDateComponents alloc] init];
 [oneDay setDay:1];
 currentCalendar = [NSCalendar currentCalendar];

在大多数情况下，这是可行的，除非日期在午夜到时钟通常在凌晨2:00之间更改的时间.不需要逻辑，因为日期时间将在此之后.

This works in most cases unless the date is between midnight and the time the clocks change usually around 2:00am. Have not needed logic for this since the date times will be after this.

这篇关于UILocationNotification不遵守夏令时的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！