ios - 仅在周一发出本地通知

Question

我尝试在每周一发送本地通知。假设我有一个场景，我必须在一个月内每周一发送服药提醒。所以一个月内总共有4个通知。我的代码如下，但我无法弄清楚以下内容；1)如何发送特定日期的通知2)如何限制通知的最大结束日期。

发送通知的代码如下；

let notification = UILocalNotification()
                    notification.alertBody = "Take Medication"                       notification.alertAction = "open" // text that is displayed after "slide to..." on the lock screen - defaults to "slide to view"
                    notification.fireDate = NSDate()
                    notification.userInfo = ["title": "notification app", "UUID": "Some Unique Guid"]
UIApplication.sharedApplication().scheduleLocalNotification(notification) 

有人可以帮忙吗？问候，尼娜

Answer 1

将 NSWeekCalendarUnit 添加到 NSDateComponents 并将重复间隔设置为 NSWeekCalendarUnit。例如:

NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDate *now = [NSDate date];
NSDateComponents *componentsForFireDate = [calendar components:(NSYearCalendarUnit | NSWeekCalendarUnit |  NSHourCalendarUnit | NSMinuteCalendarUnit| NSSecondCalendarUnit | NSWeekdayCalendarUnit) fromDate: now];
[componentsForFireDate setWeekday: 2] ; // Monday
[componentsForFireDate setHour: 18] ; // 4PM 
[componentsForFireDate setMinute:0] ;
[componentsForFireDate setSecond:0] ;

  //...
  notification.repeatInterval = NSWeekCalendarUnit;