从特定于语言环境的字符串解析数字？

Question

我必须从法国数字字符串中获取数字：@“30.000,00” 当我使用NSNumberFormattern来解析

时

 NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
 NSNumber *priceNumberValue = [numberFormatter numberFromString:@30.000"];

它返回30，我的预期回报是30000 我尝试使用其他选项

NSLocale *vnLocale = [[NSLocale alloc] initWithLocaleIdentifier:@"fr_FR"];
[numberFormatter setLocale:vnLocale];

或

[numberFormatter setDecimalSeparator:@","];

但仍会返回意外值：30

我告诉NSNumberFormatter解析@“30.000,00”的正确方法是什么？

Answer 1

设置区域设置应该有效，但您必须告诉numberformatter使用分组分隔符：

[numberFormatter setUsesGroupingSeparator:YES];

如果这不起作用，以下一定会起作用：

NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
[numberFormatter setDecimalSeparator:@","];
[numberFormatter setGroupingSeparator:@"."];
[numberFormatter setUsesGroupingSeparator:YES];
NSNumber *priceNumberValue = [numberFormatter numberFromString:@"30.000,00"];

检查完后，似乎“fr-FR”语言环境没有您期望的属性。但是，使用“fr-BE”语言环境可以正常工作：

NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
NSLocale *locale = [[NSLocale alloc] initWithLocaleIdentifier:@"fr_BE"];
[numberFormatter setLocale:locale];
[locale release];
[numberFormatter setUsesGroupingSeparator:YES];
NSNumber *priceNumberValue = [numberFormatter numberFromString:@"30.000,00"];