如何在iOS中检查日期是否属于本周？

Question

您好，我有一个这样的日期字符串。{{1}}。我想做的是检查它是否是

今天或本周或本月。我可以比较今天和月份。但是我如何检查这个日期是否属于＆＃34;本周＆＃34;

请帮帮我。 感谢

Answer 1

鉴于两个日期，

NSDate *now = [NSDate date];
NSDate *then = // some other date

了解他们是否在同一周内与：

BOOL sameWeek = [[NSCalendar currentCalendar] isDate:then equalToDate:now 
    toUnitGranularity:NSCalendarUnitWeekOfYear];

该行询问他们是否相等＆＃34;一周的粒度，意味着他们是平等的＃34;如果他们在同一周内。

Answer 2

尝试以下代码，

- (void)thisWeek:(NSDate *)date
{
    NSCalendar *gregorian = [[NSCalendar alloc]
                             initWithCalendarIdentifier:NSGregorianCalendar];
    NSDateComponents *todaysComponents = [gregorian components:NSCalendarUnitWeekOfYear fromDate:[NSDate date]];
    NSUInteger todaysWeek = [todaysComponents weekOfYear];
    NSDateComponents *otherComponents = [gregorian components:NSCalendarUnitWeekOfYear fromDate:date];
    NSUInteger datesWeek = [otherComponents weekOfYear];

    //NSLog(@"Date %@",date);
    if(todaysWeek==datesWeek){
        NSLog(@"Date is in this week");
    }else if(todaysWeek+1==datesWeek){
        NSLog(@"Date is in next week");
    }

}