iOS替换uitextfield中的char [英] iOS Replace char in uitextfield

问题描述

我发现了一个恼人的问题。我有一个带有数字十进制键盘的文本字段，但模拟器有点，设备有逗号（均为6.1）。我该怎么办，如果你插入一个逗号，它会被一个点替换？

I found an annoying problem. I have a textfield with the numeric decimal keyboard, but the simulator has the point, the device has the comma (both 6.1). How can I do, if you insert a comma, this is replaced by a point?

谢谢

编辑：

此过程必须在此方法中实时进行

this process, must take place in this method, in real time

- (BOOL) textField: (UITextField *) theTextField shouldChangeCharactersInRange: (NSRange) range ReplacementString: (NSString *) string

否则写入逗号，并在下一个字符处替换它

otherwise the comma is written, and at the next character, it is replaced

推荐答案

您可以使用

- (NSString *)stringByReplacingOccurrencesOfString:(NSString *)target 
                                        withString:(NSString *)replacement

例如：

NSString *str = myTextfield.text;

str = [str stringByReplacingOccurrencesOfString:@"."
                                     withString:@","];

自定义键盘的

请参阅 link

编辑
您可以检查此函数中的字符串输入以及是否为@。然后你可以用@，

Edit You can check the string enter in this function and if its @"." then you can change it with @","

    // using something this


- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
    {
        NSString *newString = [textField.text stringByReplacingCharactersInRange:range withString:string];
        [self updateTextLabelsWithText: newString];
        NSLog(@"Changed Str: %@",newString);

        return YES;
    }

    -(void)updateTextLabelsWithText:(NSString *)str
    {
     str = [str stringByReplacingOccurrencesOfString:@"."
                                             withString:@","];
         [myTextFiled setText:str];
    }

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