Question

以前，我一直致力于本地通知，但现在我遇到了问题。假设今天，我必须在日期前一天设置通知：2012年7月7日在我的应用程序中。我怎样才能做到这一点。我正在设置这样的通知..

- (IBAction) scheduleNotification:(id) sender {

    AppDelegate *delegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
    NSDateFormatter *formatter = [[[NSDateFormatter alloc]init]autorelease];

    for (int i = 0; i< [delegate.viewController.contactList count] ; i++) {
        UILocalNotification *localNotification = [prototypeNotification copy];
        NSString *name = [[delegate.viewController.contactList objectAtIndex:i]objectForKey:NAME_KEY];
        NSString *birthday = [[delegate.viewController.contactList objectAtIndex:i]objectForKey:BIRTHDAY_KEY];
        if (birthday) {
            [formatter setDateFormat:@"MM/dd/yyyy"];
            NSDate *date = [formatter dateFromString:birthday];
            if (date == nil) {
                [formatter setDateFormat:@"MM/dd"];
                NSDate *date = [formatter dateFromString:birthday];
            }
            else {

            }
            self.alarmTime = [date dateByAddingTimeInterval:10];
            localNotification.fireDate = alarmTime;
            localNotification.timeZone = [NSTimeZone defaultTimeZone];
            localNotification.applicationIconBadgeNumber = 1;

            NSString *itemName = @"B'day Alert!!!";
            NSString *msgName = [NSString stringWithFormat:@"Celebrate %@'s B'day",name];
            NSDictionary *userDict = [NSDictionary dictionaryWithObjectsAndKeys:itemName,MessageKey, msgName,TitleKey, nil];
            localNotification.userInfo = userDict;
            localNotification.soundName = self.soundName;
            // Schedule the notification
            [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];

        }

        else {
//            write else part
        }
        [localNotification release];
    }

}

当我遇到NSDate *date = [formatter dateFromString:birthday];这一行时，日期没有准确到来，所以我无法正确设置本地通知。如果有任何问题，请帮帮我。

Answer 1

NSDateFormatter的行为与您想象的行为不同。如果您对使用GMT，UTC，基于当前系统区域设置的时区或其他内容感到困惑，请阅读此问题并回答：NSDateFormatter return incorrect date from string

iphone中的本地通知

1 个答案: