iOS 在应用程序退出 10 天时创建本地通知

Question

我将在 10 天和 15:30 退出应用程序时创建一个本地通知。这是一个代码:

    NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
    NSDate *now = [NSDate date];
    float day = 10;
    NSDate *newDate = [now dateByAddingTimeInterval:60*60*24*day];

    NSDateComponents *componentsForFireDate = [calendar components:(NSYearCalendarUnit | NSWeekCalendarUnit |  NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit | NSWeekdayCalendarUnit) fromDate: newDate];

    [componentsForFireDate setHour: 15];
    [componentsForFireDate setMinute:30];
    [componentsForFireDate setSecond:0];
    NSDate *fireDateOfNotification = [calendar dateFromComponents:componentsForFireDate];
    UILocalNotification* localNotification = [[UILocalNotification alloc] init];
    localNotification.fireDate = fireDateOfNotification;
    localNotification.repeatInterval = NSWeekCalendarUnit;
    localNotification.timeZone = [NSTimeZone defaultTimeZone];
    localNotification.applicationIconBadgeNumber = [[UIApplication sharedApplication] applicationIconBadgeNumber] + 1;
    [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];

当我尝试将手机中的日期和时间更改为第二天(现在 + 1)时，它仍然显示通知，第二天，仍然显示。我希望在应用程序退出时每 10 天显示一次本地通知。有什么建议可以解决这个问题吗？

Answer 1

尝试此代码:您的应用在 10 天通知触发和其他 1 天触发后打开。

 NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];

NSDateComponents *componentsForFireDate = [calendar components:( NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit | NSCalendarUnitDay | NSCalendarUnitMonth | NSCalendarUnitYear) fromDate: [NSDate date]];
componentsForFireDate.day = componentsForFireDate.day + 10;
[componentsForFireDate setHour: 15];
[componentsForFireDate setMinute:30];
[componentsForFireDate setSecond:0];
NSDate *fireDateOfNotification = [calendar dateFromComponents:componentsForFireDate];
NSLog(@"Date: %@",fireDateOfNotification);
UILocalNotification* localNotification = [[UILocalNotification alloc] init];
localNotification.fireDate = fireDateOfNotification;
localNotification.alertBody = @"This is local notification!";
localNotification.repeatInterval = NSCalendarUnitDay;
localNotification.timeZone = [NSTimeZone defaultTimeZone];
localNotification.applicationIconBadgeNumber = [[UIApplication sharedApplication] applicationIconBadgeNumber] + 1;
[[UIApplication sharedApplication] scheduleLocalNotification:localNotification];

希望这段代码对你有帮助。