UILocalNotification 应该在每个工作日重复，但也会在周末触发

Question

我有一个 UILocalNotification 应该每天触发一次，从周一到周五，但不是在周末。我认为将通知的 repeatInterval 属性设置为 NSWeekdayCalendarUnit 可以完成此操作。对我来说可悲的是，我的通知仍然在周末触发。谁能建议为什么？这是我的代码：

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

localNotification.alertAction = @"View";
localNotification.alertBody = NSLocalizedString(@"ALERT_MESSAGE", nil);
localNotification.soundName = UILocalNotificationDefaultSoundName;

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"MM-dd-yyyy HH:mm"];
[dateFormatter setTimeZone:[NSTimeZone timeZoneWithName:@"America/Toronto"]];

// Notification fire times are set by creating a notification whose fire date 
// is an arbitrary weekday at the correct time, and having it repeat every weekday
NSDate *fireDate = [dateFormatter dateFromString:@"01-04-2012 11:00"]; 

localNotification.fireDate = fireDate;
localNotification.repeatInterval = NSWeekdayCalendarUnit;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
            break;

[localNotification release];

Answer 1

iOS 中的工作日仅表示一周中的一天。与周末相比，它没有“工作周”的含义。

文档说得更清楚一点，建议您使用 1-7 作为单位：

NSWeekdayCalendarUnit

指定工作日单位。

对应的值为 kCFCalendarUnitSecond。等于 kCFCalendarUnitWeekday。工作日单位是数字 1 到 N（对于公历 N=7，1 是星期日）。

来源：http://developer.apple.com/library/ios/#documentation/Cocoa/Reference/Foundation/Classes/NSCalendar_Class/Reference/NSCalendar.html

为了正确设置周一到周五的通知，这里有一些框架代码。你必须执行 5 次，所以最好将它封装在一个为 fireDate 提供参数的方法中。我已经向你展示了如何在星期一做到这一点。

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

// Set this to an NSDate that is for the time you want, on Monday
notification.fireDate = fireDate;            

// Repeat every week
notification.repeatInterval = NSWeekCalendarUnit;

Answer 2

您必须为本地通知单独设置日期，并将本地通知 repeatInterval 设置为 NSWeekCalendar Unit。作为

            [self notificationWithItem:tempDict Date:[self SetDateForAlarmWithWeekday:2 :tempDict] andRepeatInterval:NSWeekCalendarUnit];
            [self notificationWithItem:tempDict Date:[self SetDateForAlarmWithWeekday:3 :tempDict]andRepeatInterval:NSWeekCalendarUnit];
            [self notificationWithItem:tempDict Date:[self SetDateForAlarmWithWeekday:4 :tempDict] andRepeatInterval:NSWeekCalendarUnit];
            [self notificationWithItem:tempDict Date:[self SetDateForAlarmWithWeekday:5 :tempDict] andRepeatInterval:NSWeekCalendarUnit];
            [self notificationWithItem:tempDict Date:[self SetDateForAlarmWithWeekday:6 :tempDict] andRepeatInterval:NSWeekCalendarUnit];

在这里，我创建了 setDateForAlarmWithWeekday 方法，该方法返回要在本地通知的 fireDate 属性中设置的日期，以及设置本地通知的 notificationWithItem。

-(void) notificationWithItem:(NSDictionary*)tmpdict Date:(NSDate *)date andRepeatInterval:(NSCalendarUnit)CalUnit
{
    UILocalNotification *localNotification =[[UILocalNotification alloc]init];

    if (localNotification==nil) {
        return;
    }

    localNotification.fireDate=date;
    localNotification.timeZone=[NSTimeZone defaultTimeZone];
    localNotification.repeatCalendar=[NSCalendar currentCalendar];
    localNotification.alertBody=[NSString stringWithFormat:@"%@",[tmpdict objectForKey:@"Reminder"]];

    NSDictionary *snoozeDic=[tmpdict objectForKey:@"Snooze"];
    if ([[snoozeDic valueForKey:@"Switch"]intValue]==1) {
        localNotification.alertAction=@"Snooze";
    }else
    {
        localNotification.hasAction=NO;
    }

    localNotification.repeatInterval=CalUnit;
    localNotification.soundName=[NSString stringWithFormat:@"%@.caf",[tmpdict objectForKey:@"Tone"]];
    localNotification.userInfo=[NSDictionary dictionaryWithObject:tmpdict forKey:@"AlarmInfo"];
    localNotification.applicationIconBadgeNumber=1;

    [[UIApplication sharedApplication]scheduleLocalNotification:localNotification];

}


-(NSDate*)SetDateForAlarmWithWeekday:(int)WeekDay:(NSDictionary*)dics
{
    NSLog(@"set date for alarm called");
    NSCalendar *calendar=[NSCalendar currentCalendar];
    [calendar setTimeZone:[NSTimeZone defaultTimeZone]];

    unsigned currentFlag=NSDayCalendarUnit|NSMonthCalendarUnit|NSYearCalendarUnit|NSWeekdayCalendarUnit;

    NSDateComponents *comp=[calendar components:currentFlag fromDate:[NSDate date]];

    NSArray *array=[[dics objectForKey:@"Time"] componentsSeparatedByString:@" "];
    NSInteger hour=[[[[array objectAtIndex:0] componentsSeparatedByString:@":"] objectAtIndex:0] intValue];
    NSInteger min=[[[[array objectAtIndex:0] componentsSeparatedByString:@":"] objectAtIndex:1] intValue];

    if ([[array objectAtIndex:1] isEqualToString:@"PM"]) {
        hour=hour+12;
    }
    else
    {
        if (hour==12) {
            hour=0;
        }
    }

    comp.hour=hour;
    comp.minute=min;
    comp.second=0;

    NSLog(@"set date for alarm (%i:%i:%i)",comp.hour,comp.minute,comp.second);
    NSLog(@"weekday :%i ",WeekDay);
    NSLog(@"comp weekday %i",comp.weekday);
    int diff=(WeekDay-comp.weekday);
    NSLog(@"difference :%i",diff);

    int multiplier;
    if (WeekDay==0) {
     multiplier=0;
    }else
    {
     multiplier=diff>0?diff:(diff==0?diff:diff+7);
    }

    NSLog(@"multiplier :%i",multiplier);

    return [[calendar dateFromComponents:comp]dateByAddingTimeInterval:multiplier*secondsInOneDay];
}

我希望这会对你有所帮助。

Answer 3

我也搜索过。下面的代码对我有用。将工作日值 1 传递到 7 星期日到星期六，通知正文与您要触发的操作并指定您的日期，然后通知将在该特定日期出现。 周末调用此函数两次，值为 7，周六和周日分别为 1。

希望对您有所帮助。

- (void) weekEndNotificationOnWeekday: (int)weekday :(UILocalNotification *)notification : (NSDate*) alramDate
{
    NSCalendar *calendar = [NSCalendar currentCalendar];

    NSDateComponents *componentsForFireDate = [calendar components:(NSYearCalendarUnit | NSWeekCalendarUnit |  NSHourCalendarUnit | NSMinuteCalendarUnit| NSSecondCalendarUnit | NSWeekdayCalendarUnit) fromDate: alramDate];
    [componentsForFireDate setWeekday: weekday] ; //for fixing Sunday
    //    [componentsForFireDate setHour: 20] ; //for fixing 8PM hour
    //    [componentsForFireDate setMinute:0] ;
    //    [componentsForFireDate setSecond:0] ;
    notification.repeatInterval = NSWeekCalendarUnit;
    notification.fireDate=[calendar dateFromComponents:componentsForFireDate];
    [[UIApplication sharedApplication] scheduleLocalNotification:notification];

}

Answer 4

类似但在 Swift 中。

请记住，WeekDay 从 1 = Sunday 开始，一直到 7。请参阅 Apple Docs：https://developer.apple.com/library/ios/documentation/Cocoa/Reference/Foundation/Classes/NSDateComponents_Class/

func scheduleLocalNotification(date:NSDate, weekDay:Int){

        guard let calendar =  NSCalendar(calendarIdentifier: NSCalendarIdentifierGregorian),
    let groupName = dateFormatter?.stringFromDate(date) else { return }

        calendar.timeZone = NSTimeZone.defaultTimeZone()

        let dateComponents = NSDateComponents()
        dateComponents.calendar = calendar
        dateComponents.hour = calendar.component(.Hour, fromDate: date)
        dateComponents.minute = calendar.component(.Minute, fromDate: date)
        dateComponents.weekOfYear = calendar.component(.WeekOfYear, fromDate: date)
        dateComponents.weekday = weekDay

        let localNotificaion = UILocalNotification()
        localNotificaion.fireDate = calendar.dateFromComponents(dateComponents)
        localNotificaion.alertBody = "Hey!"
        localNotificaion.timeZone = NSTimeZone.defaultTimeZone()
        localNotificaion.userInfo = ["Time": groupName]
        localNotificaion.repeatInterval = .WeekOfYear
        UIApplication.sharedApplication().scheduleLocalNotification(localNotificaion)

}