4

local notifications为我的应用程序 启用有点困难。

是的,我和一个local notification女巫一起设置了我的项目,我想在应用程序关闭一周后安排我的时间。例如,如果用户在 8 号星期六打开应用程序,本地通知应该会在下一个星期六 15 号出现,但时间应该改变。例如,他/她在晚上 8 点关闭应用程序,我不想在下周晚上 8 点打扰他们,所以我想在下午 6 点或类似的时间显示每个通知。

现在您知道我的问题了,这是我正在使用的代码:

- (void)applicationDidEnterBackground:(UIApplication *)application
{
    [[UIApplication sharedApplication] cancelAllLocalNotifications];

    NSCalendar *calendar = [NSCalendar autoupdatingCurrentCalendar] ;
    NSDateComponents *componentsForReferenceDate = [[NSDateComponents alloc] init];

    //set day (saturday)

    [componentsForReferenceDate setDay:26] ;
    [componentsForReferenceDate setMonth:1] ;
    [componentsForReferenceDate setYear:2013] ;

    [componentsForReferenceDate setHour: 17] ;
    [componentsForReferenceDate setMinute:30] ;
    [componentsForReferenceDate setSecond:00] ;

    NSDate *fireDateOfNotification = [calendar dateFromComponents: componentsForReferenceDate];

    // Create the notification

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


    notification.fireDate = fireDateOfNotification ;
    notification.timeZone = [NSTimeZone localTimeZone] ;
    notification.alertBody = [NSString stringWithFormat: @"Du wirst vermisst! \nDeine App braucht dich, schreibe sie zu Ende!"] ;
    notification.alertAction = @"Zurückkehren";
    notification.userInfo= [NSDictionary dictionaryWithObject:[NSString stringWithFormat:@"Some information"] forKey:@"information"];
    notification.repeatInterval= NSWeekCalendarUnit ;
    notification.soundName = @"Appnotifisound.wav";
    notification.applicationIconBadgeNumber = 1;
    [[UIApplication sharedApplication] scheduleLocalNotification:notification] ;

}

我知道必须有更多的方法来删除徽章和didrecievenotification,但我把它们放出来了,因为这并不重要。

使用此代码,我设法将通知安排在每个星期六下午5:30(德国)。但我只想安排一次,当时应用程序已经关闭了整整一周。这有可能吗?如果有人可以更正我的代码或为此提供解决方案,我会很高兴。

最好的问候,并感谢您阅读这篇长文,

诺亚

4

3 回答 3

6

您应该取消安排以前的通知。

for (UILocalNotification *lNotification in [[UIApplication sharedApplication] scheduledLocalNotifications]) 
    {
        if ([[lNotification.userInfo valueForKey:@"information"] isEqualToString:@"Some information"])
        {
            [[UIApplication sharedApplication]cancelLocalNotification:lNotification];
            break;
        }
    }

通过以下方式设置火灾日期:

NSCalendar *calendar = [NSCalendar currentCalendar];
    NSDateComponents *componentsForReferenceDate = [calendar components:(NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit)
                                     fromDate:[NSDate date]];
    [componentsForReferenceDate setHour: 17] ;
    [componentsForReferenceDate setMinute:30] ;
    [componentsForReferenceDate setSecond:00] ;

    NSDate *tempDate = [calendar dateFromComponents: componentsForReferenceDate];
    [componentsForReferenceDate release];

    NSDateComponents *comps = [[NSDateComponents alloc]init];
    [comps setDay:7];
    NSDate *fireDateOfNotification = [calendar dateByAddingComponents:comps
                                                               toDate:tempDate options:0]
    [comps release];
于 2013-03-06T16:17:24.630 回答
1

notification.repeatInterval = NSWeekCalendarUnit是造成这种情况的。采用:

notification.repeatInterval = 0;

这可以防止重复(来源)。

于 2013-03-06T16:15:02.540 回答
1

这是Swift 2.0的适配

取消安排当前通知

    for notifMe:AnyObject in UIApplication.sharedApplication().scheduledLocalNotifications!{
        let title = notifMe.userInfo["information"] as? String
        if title == "some information"{
                UIApplication.sharedApplication().cancelLocalNotification(notifMe as! UILocalNotification)
        }
        }

设置通知日期

    let date = NSDate()
    let calendar = NSCalendar.currentCalendar()
    let components = calendar.components(NSCalendarUnit.Year.union(NSCalendarUnit.Month).union(NSCalendarUnit.Day),fromDate: date)
    components.hour = 17
    components.minute = 30
    components.second = 00

    let tempDate = calendar.dateFromComponents(components)!
    let comps = NSDateComponents()
    comps.day = 7
    let fireDateOfNotification = calendar.dateByAddingComponents(comps, toDate: tempDate, options:[])
于 2015-11-03T14:55:41.133 回答