iphone - 从特定于区域设置的字符串中解析数字？

Question

我必须从 France-number-style 字符串中获取号码:@"30.000,00" 当我使用 NSNumberFormattern 解析时

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

返回了30，我的预期返回是30000 我尝试使用其他选项

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

或

[numberFormatter setDecimalSeparator:@","];

但它仍然返回意外值:30

告诉 NSNumberFormatter 解析 @"30.000,00"的正确方法是什么？

Answer 1

设置区域设置应该可以，但您必须告诉数字格式化程序使用分组分隔符:

[numberFormatter setUsesGroupingSeparator:YES];

如果这不起作用，下面的方法肯定会起作用:

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

检查后，“fr-FR”语言环境似乎没有您期望的属性。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"];