cocoa - 你如何提取可可中当前日期的数量？

Question

如何在可可中提取当前月日数？我就是这样做的，但它返回类似 309420938420422 的内容。谢谢！

-(int)getNumberOfCurrentDay:(NSDate*)date_
{
    NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];

    NSDateComponents *comps = [gregorian components:NSMonthCalendarUnit fromDate:date_];
    NSInteger numberday = [comps day];

    NSLog(@"Number of the day %i", numberday);


    return numberday;
}

Answer 1

你需要使用：NSDayCalendarUnit

-(int)getNumberOfCurrentDay:(NSDate*)date_
{
    NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];

    NSDateComponents *comps = [gregorian components:NSDayCalendarUnit fromDate:date_];
    NSInteger numberday = [comps day];

    NSLog(@"Number of the day %d", numberday);


    return numberday;
}

Answer 2

尝试使用NSDayCalendarUnit而不是NSMonthCalendarUnit. 或执行以下操作以获得更多信息（天、月、年、小时、分钟、秒等）：

int comp = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit;
NSDateComponents *theDateComponents = [gregorian components:comp fromDate:date_];
int day = [theDateComponents day];

希望能帮助到你