ios - UITextfield 验证 1 - 100 之间的国家/地区货币

Question

如何验证 UITextfield 接受 1 到 100 种货币值(最多 2 位小数值)。

有效。0.25 99.99, 1.99,100.00。其他国家货币小数点也表示。0,2599,991,99100,00

无效00.25、100.25、0000000.00、0.125、9.567

NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc]init];
    numberFormatter.locale = [NSLocale currentLocale];// this ensures the right separator behavior
    numberFormatter.numberStyle = NSNumberFormatterCurrencyStyle;
    numberFormatter.usesGroupingSeparator = YES;
    numberFormatter.usesSignificantDigits = YES;
    numberFormatter.currencyGroupingSeparator = numberFormatter.locale.groupingSeparator;
    numberFormatter.decimalSeparator = numberFormatter.locale.decimalSeparator;

NSString *expression = @"^([0-9]+)?(\\.,([0-9]{1,2})?)?$";
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:expression
                                                                       options:NSRegularExpressionCaseInsensitive error:nil];
NSUInteger numberOfMatches = [regex numberOfMatchesInString:newString
                                                    options:0 range:NSMakeRange(0, [newString length])];

if (numberOfMatches == 0)
    return NO;

无法正常工作，无法按 UITextfield 内的 , 。瑞典货币小数点表示“,”而不是“.”我想要工作计算两个输入的值，一个是 int，另一个值是 float

Answer 1

在 UItTxtfield 委托(delegate)方法中尝试此代码。

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
{

    NSInteger Currency = [textField.text integerValue];
    if(Currency >= 100)
    {
        return NO;
    }
    else
    {
        NSString *enteredCurrency=textField.text;
        if([enteredCurrency containsString:@"."])
        {
            NSArray *array=[enteredCurrency componentsSeparatedByString:@"."];
            if([array[1] length] >= 2 || [array[0] length] >= 2)
            {
                return NO;
            }
            else
            {
                return YES;
            }
        }
        else
        {
            return YES;
        }
    }
}