没有“$”的Cocoa NSNumberFormatterCurrencyStyle返回零 [英] Cocoa NSNumberFormatterCurrencyStyle without "$" return zero

问题描述

我有一个数字格式化程序设置为将货币字符串转换为十进制值。问题是，如果文本字符串没有前导美元符号（$），它会转换为0，而不是一个有效的匹配数字。因此：

 $ 3.50转换为3.50 
3.50转换为0 
  

以下是转换器的代码：

  // formatter将值转换为货币字符串
 NSNumberFormatter * currencyFormatter = [[NSNumberFormatter alloc] init]; 
 [currencyFormatter setNumberStyle：NSNumberFormatterCurrencyStyle]; 
 [currencyFormatter setGeneratesDecimalNumbers：YES]; 
 
 
 
 
 <解决方案
我遇到了类似的问题。我结束了报废NSNumberFormatter解析和切换到RegexKit Lite有更好的结果。
 
 
 
在这里抓取一个副本： RegexKit Lite  
 
 
 
然后前往这里 http://regexlib.com/ ，并找到最适合您的正则表达式。
 
I have a number formatter set up to convert currency strings to decimal values. The problem is that if the text string does not have a leading dollar sign ("$"), it gets converted to 0, rather than a valid matching number. So:
"$3.50" converts to 3.50
 "3.50" converts to 0
Here is the code for the converter:
// formatter to convert a value to and from a currency string
NSNumberFormatter *currencyFormatter = [[NSNumberFormatter alloc] init];
[currencyFormatter setNumberStyle:NSNumberFormatterCurrencyStyle];
[currencyFormatter setGeneratesDecimalNumbers:YES];
Am I missing something?
解决方案
I ran into a similar problem.  I ended up scrapping the NSNumberFormatter for parsing and switched over to RegexKit Lite with much better results.

Grab a copy here: RegexKit Lite

Then go here http://regexlib.com/ and find the regex that works best for you.

                        
这篇关于没有“$”的Cocoa NSNumberFormatterCurrencyStyle返回零的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！