iOS8-获取当前时间的年、月、日、时、分、秒

    //获取当前时间

    NSDate *now = [NSDate date];

    NSLog(@"now date is: %@", now);

    //创建日历对象

    NSCalendar *calendar = [NSCalendar currentCalendar];

    NSUInteger unitFlags = NSCalendarUnitYear |NSCalendarUnitMonth | NSCalendarUnitDay | NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond;

    NSDateComponents *dateComponent = [calendar components:unitFlags fromDate:now];

        NSInteger year = [dateComponent year];

        NSInteger month = [dateComponent month];

        NSInteger day = [dateComponent day];

        NSInteger hour = [dateComponent hour];

        NSInteger minute = [dateComponent minute];

        NSInteger second = [dateComponent second];

    

        NSLog(@"year is: %ld", (long)year);

        NSLog(@"month is: %ld", (long)month);

        NSLog(@"day is: %ld", (long)day);

        NSLog(@"hour is: %ld", (long)hour);

        NSLog(@"minute is: %ld", (long)minute);

        NSLog(@"second is: %ld", (long)second);