iOS 中 NSDecimalNumber 的小数分隔符错误

发布于 2025-01-01 11:53:37 字数 448 浏览 1 评论 0原文

我尝试通过以下方式输出具有正确的小数分隔符的十进制数字的描述：

NSString* strValue = @"9.94300";
NSDecimalNumber* decimalNumber = [NSDecimalNumber decimalNumberWithString: strValue];    
NSLocale* locale = [NSLocale currentLocale];
NSLog(@"%@", [locale localeIdentifier]);
NSLog(@"%@", [decimalNumber descriptionWithLocale: locale] );

输出为：

de_DE
9.943

小数分隔符应该是 ',' 而不是 '.'对于这个语言环境。错误在哪里？如何根据本地输出正确的小数点分隔符？

原文

I tried to output the description of a decimal number with the correct decimal separator in the following way:

NSString* strValue = @"9.94300";
NSDecimalNumber* decimalNumber = [NSDecimalNumber decimalNumberWithString: strValue];    
NSLocale* locale = [NSLocale currentLocale];
NSLog(@"%@", [locale localeIdentifier]);
NSLog(@"%@", [decimalNumber descriptionWithLocale: locale] );

The output is:

de_DE
9.943

The decimal separator should be ',' instead of '.' for this locale. Where is the error? How can I output the correct decimal separator depending on the local?

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池予 2025-01-08 11:53:37

@TriPhoenix：是的，我正在运行 iOS 5。

@Vignesh：非常感谢。如果我将 iPhone 语言设置为德语，以下代码现在可以运行：

NSString* strValue = @"9.94300";
NSDecimalNumber* decimalNumber = [NSDecimalNumber decimalNumberWithString: strValue];    
NSNumberFormatter* numberFormatter = [[NSNumberFormatter alloc] init];
[numberFormatter setFormatterBehavior: NSNumberFormatterBehavior10_4];
[numberFormatter setNumberStyle: NSNumberFormatterDecimalStyle];
NSLog(@"%@", [numberFormatter stringFromNumber: decimalNumber] );

输出为：
9,943

但现在我有另一个问题。如果我将 iPhone 语言切换回英语，输出仍然是 9,943，而不是 9.943。我做错了什么吗？

@TriPhoenix: Yes I'm running iOS 5.

@Vignesh: Thank you very much. The following code works now if I set the iPhone language to German:

NSString* strValue = @"9.94300";
NSDecimalNumber* decimalNumber = [NSDecimalNumber decimalNumberWithString: strValue];    
NSNumberFormatter* numberFormatter = [[NSNumberFormatter alloc] init];
[numberFormatter setFormatterBehavior: NSNumberFormatterBehavior10_4];
[numberFormatter setNumberStyle: NSNumberFormatterDecimalStyle];
NSLog(@"%@", [numberFormatter stringFromNumber: decimalNumber] );

The output is:
9,943

But now I have another problem. If I switch the iPhone language back to English the output is still 9,943 instead of 9.943. Do I make something wrong?

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娇柔作态 2025-01-08 11:53:37

你可以使用这个：

NSLocale *locale = [NSLocale currentLocale];

float r = 50/100;

NSString *str = [NSString stringWithFormat:@"%.2f%%", r];
str = [str stringByReplacingOccurrencesOfString:@"." withString:[locale objectForKey: NSLocaleDecimalSeparator]];

它有效！

You can use this:

NSLocale *locale = [NSLocale currentLocale];

float r = 50/100;

NSString *str = [NSString stringWithFormat:@"%.2f%%", r];
str = [str stringByReplacingOccurrencesOfString:@"." withString:[locale objectForKey: NSLocaleDecimalSeparator]];

It worked!

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