n日後の日時を求めたい
// n日後の日時をもとめる NSCalendar *calendar = [NSCalendar currentCalendar]; NSDate *now = [NSDate date]; NSDateComponents *sevenDays = [[NSDateComponents alloc] init]; [sevenDays setDay:7]; NSDate *sevenDaysLater = [calendar dateByAddingComponents:sevenDays toDate:now options:0]; NSLog(@"seven days later: %@", sevenDaysLater); // => seven days later: 2010-04-11 22:45:55