Question

我有一个NSNumberFormatter，我试图用来从NSNumber生成一定数量的GBP（£）。无论我尝试哪种咒语，我都会得到两位小数。我的代码是：

    NSNumberFormatter *fmtCurrency = [[[NSNumberFormatter alloc] init] autorelease];
    [fmtCurrency setNumberStyle: NSNumberFormatterCurrencyStyle];
    [fmtCurrency setGeneratesDecimalNumbers:FALSE];
    [fmtCurrency setCurrencyCode:@"GBP"];
    [fmtCurrency setCurrencySymbol:@"£"];
    txtTotal.text = [fmtCurrency stringFromNumber: result.Bill ]; // this is an NSNumber

Answer 1

我想你想用零调用setMaximumFractionDigits。

NSNumberFormatter *fmtCurrency = [[[NSNumberFormatter alloc] init] autorelease];
[fmtCurrency setNumberStyle: NSNumberFormatterCurrencyStyle];
[fmtCurrency setGeneratesDecimalNumbers:NO];
[fmtCurrency setCurrencyCode:@"GBP"];
[fmtCurrency setCurrencySymbol:@"£"];

NSNumber* myNumber = [NSNumber numberWithFloat:12.34];
NSString* myString = [fmtCurrency stringFromNumber:myNumber];
NSLog( @"the number is %@", myString );

[fmtCurrency setMaximumFractionDigits:0];
myString = [fmtCurrency stringFromNumber:myNumber];
NSLog( @"now it's %@", myString );  


2011-07-25 01:05:39.823 FormatterTest[841:707] the number is £12.34
2011-07-25 01:05:39.824 FormatterTest[841:707] now it's £12

Answer 2

您可以尝试以下

[fmtCurrency setGeneratesDecimalNumbers:NO];
[fmtCurrency setMaximumFractionDigits:0];

或

根据@Praveen

的建议，从intValue获取NSNumber

Answer 3

您需要从intValue中提取NSNumber。

Answer 4

您可以删除所有NSNumberFormatter（这是非常密集的），只需执行：

txtTotal.text = [NSString stringWithFormat:@"£%d", result.Bill.intValue];

Answer 5

雨燕4

    let formatter = NumberFormatter()
    formatter.maximumFractionDigits = 0

Answer 6

将字符串格式化为两位小数...（我正在搜索的内容）适应...

            float distance = //distance with many decimals...;

            NSNumberFormatter *numberFormatter = [[[NSNumberFormatter alloc] init] autorelease];
            [numberFormatter setMaximumFractionDigits:2];

            //new distance with two decimals
            NSNumber* myNumber = [NSNumber numberWithFloat:distance];

祝你好运

使用NSNumberFormatter防止小数

6 个答案: