将nsstring转换为其cocoa货币等价物的最简单方法

您需要使用数字格式化程序。注意:这也是为用户区域设置以正确格式显示日期/时间等的方式。

// alloc formatter
NSNumberFormatter *currencyStyle = [[NSNumberFormatter alloc] init];

// set options.
[currencyStyle setFormatterBehavior:NSNumberFormatterBehavior10_4];
[currencyStyle setNumberStyle:NSNumberFormatterCurrencyStyle];

NSNumber *amount = [NSNumber numberWithInteger:78000];

// get formatted string
NSString* formatted = [currencyStyle stringFromNumber:amount]

[currencyStyle release];

末端的小数/分可以控制如下:

[currencyStyle setMaximumFractionDigits:0];

这是文档链接,来自 apple

上面的答案将转换一个数字,但这里有一种方法可以将nsstring实际转换为货币格式。

- (NSString*) formatCurrencyWithString: (NSString *) string
{
    // alloc formatter
    NSNumberFormatter *currencyStyle = [[NSNumberFormatter alloc] init];

    // set options.
    [currencyStyle setFormatterBehavior:NSNumberFormatterBehavior10_4];

    // reset style to no style for converting string to number.
    [currencyStyle setNumberStyle:NSNumberFormatterNoStyle];

    //create number from string
    NSNumber * balance = [currencyStyle numberFromString:string];

    //now set to currency format
    [currencyStyle setNumberStyle:NSNumberFormatterCurrencyStyle];

    // get formatted string
    NSString* formatted = [currencyStyle stringFromNumber:balance];

    //release
    [currencyStyle release];

    //return formatted string
    return formatted;
}