NSDateFormatter setDateFormat的序数月日后缀选项 [英] Ordinal Month-day Suffix Option for NSDateFormatter setDateFormat

问题描述

NSDateFormatter的什么setDateFormat选项用于获取一个月的序数后缀？

What setDateFormat option for NSDateFormatter do I use to get a month-day's ordinal suffix?

例如。下面的代码段目前生成：

3:11 PM 8月15日星期六

e.g. the snippet below currently produces:
3:11 PM Saturday August 15

我必须更改以获取：

3 ：11 PM Saturday August 15

NSDate *date = [NSDate date];
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setFormatterBehavior:NSDateFormatterBehavior10_4];
[dateFormatter setDateFormat:@"h:mm a EEEE MMMM d"];
NSString *dateString = [dateFormatter stringFromDate:date]; 
NSLog(@"%@", dateString);

在PHP中，我将使用上面的情况：

<？php echo date（'h：m A l F jS'）？>

In PHP, I'd use this for the case above:
<?php echo date('h:m A l F jS') ?>

NSDateFormatter等效于PHP格式字符串中的 S 选项？

Is there an NSDateFormatter equivalent to the S option in the PHP formatting string?

推荐答案

NSDate *date = [NSDate date];
NSDateFormatter *prefixDateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[prefixDateFormatter setFormatterBehavior:NSDateFormatterBehavior10_4];
[prefixDateFormatter setDateFormat:@"h:mm a EEEE MMMM d"];
NSString *prefixDateString = [prefixDateFormatter stringFromDate:date];
NSDateFormatter *monthDayFormatter = [[[NSDateFormatter alloc] init] autorelease];
[monthDayFormatter setFormatterBehavior:NSDateFormatterBehavior10_4];
[monthDayFormatter setDateFormat:@"d"];     
int date_day = [[monthDayFormatter stringFromDate:date] intValue];  
NSString *suffix_string = @"|st|nd|rd|th|th|th|th|th|th|th|th|th|th|th|th|th|th|th|th|th|st|nd|rd|th|th|th|th|th|th|th|st";
NSArray *suffixes = [suffix_string componentsSeparatedByString: @"|"];
NSString *suffix = [suffixes objectAtIndex:date_day];   
NSString *dateString = [prefixDateString stringByAppendingString:suffix];   
NSLog(@"%@", dateString);

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