Question

我正在使用以下NSNumberFormatter在货币值中添加逗号和符号。

self.currencyFormatter = [NSNumberFormatter new];
self.currencyFormatter.numberStyle = NSNumberFormatterCurrencyStyle;
self.currencyFormatter.currencySymbol = @"£";
self.currencyFormatter.currencyCode = @"GBP";
self.currencyFormatter.roundingMode = NSNumberFormatterRoundHalfUp;
self.currencyFormatter.maximumFractionDigits = 0;

用法：

self.principleAmountTextField.text = [self.currencyFormatter stringFromNumber:[NSNumber numberWithInteger:100000]];

按预期显示100,000英镑。现在如果我在textfield中插入两个以上的数字（文本变成£100,00096）并尝试将字符串转换为Integer，我得到0！基本上后面的行返回0.我不知道如何处理这个问题。

NSLog(@"%d", [[self.currencyFormatter numberFromString:@"£100,00096"] integerValue]);

仅供参考我有自定义输入视图到文本字段，只允许数字进入文本字段。在Did Edit End中，即使我格式化数字并以逗号显示。

Answer 1

您需要删除逗号以使其正常工作，您仍然可以在文本字段中显示它们，但在将字符串传递给格式化程序之前应将其删除。像这样：

NSString *userInput = @"£100,00096";    
userInput = [userInput stringByReplacingOccurrencesOfString:@"," withString:@""];
NSLog(@"%ld", (long)[[currencyFormatter numberFromString:userInput] integerValue]);

Answer 2

100,00096不正确......

你的意思是其中之一吗？

[[self.currencyFormatter numberFromString:@"£10000096"] integerValue]
[[self.currencyFormatter numberFromString:@"£100,000.96"] integerValue]
[[self.currencyFormatter numberFromString:@"£100000.96"] integerValue]
[[self.currencyFormatter numberFromString:@"£10,000,096"] integerValue]

Answer 3

我的参考代码。带货币符号的数字也无效！以下照顾一切。

    NSCharacterSet *doNotWant = [NSCharacterSet characterSetWithCharactersInString:[NSString stringWithFormat:@"%@%@", self.currencyFormatter.groupingSeparator, self.currencyFormatter.currencySymbol]];
    self.amountTextField.text = [[self.amountTextField.text componentsSeparatedByCharactersInSet:doNotWant] componentsJoinedByString:@""];
    self.amountTextField.text = [NSString stringWithFormat:@"£%@", self.amountTextField.text];
    NSUInteger amount = [[self.currencyFormatter numberFromString:self.amountTextField.text] integerValue];
    self.amountTextField.text = [self.currencyFormatter stringFromNumber:[NSNumber numberWithInteger:amount]]

iOS：NSNumberFormatter不会将字符串转换回NSNumber

3 个答案: