Question

我每天上午10点在我的应用程序中安排UILocalNotification。

我使用了以下代码

 NSCalendar *calendar = [NSCalendar autoupdatingCurrentCalendar] ;

NSDateComponents *componentsForReferenceDate =

[calendar components:(NSDayCalendarUnit | NSYearCalendarUnit | NSMonthCalendarUnit ) fromDate:[NSDate date]];

[componentsForReferenceDate setDay:10] ;
[componentsForReferenceDate setMonth:10] ;
[componentsForReferenceDate setYear:2013] ;

NSDate *referenceDate = [calendar dateFromComponents:componentsForReferenceDate] ;

// set components for time 10:00 a.m.

NSDateComponents *componentsForFireDate =

[calendar components:(NSYearCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit| NSSecondCalendarUnit ) fromDate: referenceDate];

[componentsForFireDate setHour:10] ;
[componentsForFireDate setMinute:0] ;
[componentsForFireDate setSecond:0] ;

NSDate *fireDateOfNotification = [calendar dateFromComponents: componentsForFireDate];

// Create the notification

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

notification.fireDate = fireDateOfNotification ;
notification.timeZone = [NSTimeZone localTimeZone] ;
notification.alertBody = [NSString stringWithFormat: @"Good Morning! Have a great day!"] ;
notification.alertAction = @"go back";
notification.userInfo= [NSDictionary dictionaryWithObject:[NSString stringWithFormat:@"Some information"] forKey:@"information"];
notification.repeatInterval = NSDayCalendarUnit ;
notification.soundName = UILocalNotificationDefaultSoundName;
notification.applicationIconBadgeNumber = [[UIApplication sharedApplication] applicationIconBadgeNumber] + 1;
[[UIApplication sharedApplication] scheduleLocalNotification:notification] ;

它的工作非常好。但现在我想每隔一天和每隔三天安排一次UILocalNotification。那怎么办？

Answer 1

你不能自定义UILocalNotification的repeatTimeInterval ..有很多问题像你一样，而且前几天我有同样的问题，但我找不到任何解决方案所以请更好的是停止与它斗争。

您必须使用

中的重复时间间隔

日历单位指定日历和月份等日历单位。

enum {
   NSEraCalendarUnit = kCFCalendarUnitEra,
   NSYearCalendarUnit = kCFCalendarUnitYear,
   NSMonthCalendarUnit = kCFCalendarUnitMonth,
   NSDayCalendarUnit = kCFCalendarUnitDay,
   NSHourCalendarUnit = kCFCalendarUnitHour,
   NSMinuteCalendarUnit = kCFCalendarUnitMinute,
   NSSecondCalendarUnit = kCFCalendarUnitSecond,
   NSWeekCalendarUnit = kCFCalendarUnitWeek,
   NSWeekdayCalendarUnit = kCFCalendarUnitWeekday,
   NSWeekdayOrdinalCalendarUnit = kCFCalendarUnitWeekdayOrdinal,
   NSQuarterCalendarUnit = kCFCalendarUnitQuarter,
   NSWeekOfMonthCalendarUnit = kCFCalendarUnitWeekOfMonth,
   NSWeekOfYearCalendarUnit = kCFCalendarUnitWeekOfYear,
   NSYearForWeekOfYearCalendarUnit = kCFCalendarUnitYearForWeekOfYear
   NSCalendarCalendarUnit = (1 << 20),
   NSTimeZoneCalendarUnit = (1 << 21),
};
typedef NSUInteger NSCalendarUnit;

您可以从Apple的文档中找到。还读了这个问题......

How to set Local Notification repeat interval to custom time interval?

有关详细信息，您只安排了最大 64 的本地通知，因此请注意，如果您想要计划，请为自定义重复时间间隔创建多个通知。

Answer 2

您只能使用repeatInterval执行此操作，因为只有the following个时间间隔可用。

我能想到的解决方案之一是为每天设置单独的通知（没有repeatInterval）。但通过这种方式，你可以偶然发现64个通知限制。

如何每隔一天或每隔三天安排UILocalNotification？

2 个答案: