ios - 如何获得下个月的第1、2、3、4个工作日(工作日)

Question

我一直在寻找下个月第一，第二，第三或第四工作日(工作日)的日期。

我有以下代码:

NSTimeInterval *lastDue; // unix time stamp from last due date
NSDate *ldue=[NSDate dateWithTimeIntervalSince1970:lastDue];                
NSDateComponents *dc =[calendar components:(NSYearCalendarUnit | NSMonthCalendarUnit | NSWeekdayCalendarUnit|NSWeekdayOrdinalCalendarUnit) fromDate:ldue];

NSLog(@"firstWeekday: %ld",(long)dc.weekday);

任何人都有从哪里开始的提示？

谢谢

Answer 1

我认为这可以解决您的问题:

    // Get the date of today
    NSDate *today = [[NSDate alloc] init];
    NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
    NSDateComponents *components = [gregorian components:(NSEraCalendarUnit | NSYearCalendarUnit | NSMonthCalendarUnit) fromDate:today];
    // Set the next month, you don't have t worry in December, it will automatically switch to the next year
    components.month = components.month+1;
    // Iterate over the first four days of the month
    for(int i=1;i<5;i++)
    {
        components.day = i;
        // Get the new date
        NSDate *dayInMonth = [gregorian dateFromComponents:components];
        // Get the day in the week
        NSDateComponents *weekdayComponents =[gregorian components:NSWeekdayCalendarUnit fromDate:dayInMonth];
        NSInteger weekday = [weekdayComponents weekday];
        // Sunday = 1, Monday = 2, ...
        BOOL isWeekDay = YES;
        if(weekday==7||weekday==1) {
            isWeekDay = NO;
        }
        // Format properly the output
        NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
        [formatter setDateFormat:@"dd/MM/yy - hh:mm a"];
        NSString *dateWithNewFormat = [formatter stringFromDate:dayInMonth];
        // Print the date and 1 if is a weekday or 0 if not
        NSLog(@"'%@': %d",dateWithNewFormat, isWeekDay);
    }