在方法调用stringByReplacingOccurrencesOfString中转义反斜杠在目标C中不起作用 [英] Escaping backslashes in method call stringByReplacingOccurrencesOfString Does not work in Objective C

问题描述

这行代码不会产生我期望的结果.

This line of code does not produce the result I am expecting.

NSString *tmpstoryTitle2 = [tmpstoryTitle stringByReplacingOccurrencesOfString:@"\"" withString:@"\\\""];

我正在尝试更改这样的字符串:

I am attempting to change a string like this:

你好，"this"是我的字符串.

hello, "this" is my string.

到

你好，\"this \"是我的字符串.

hello, \"this\" is my string.

使用上面的代码.但是，我得到的输出是:

With the code above. However, the output I get is:

你好，\\"this \\"是我的字符串.

hello, \\"this\\" is my string.

如果我从搜索字符串\\中删除\\以替换\"，则会得到输出:

If I remove the \\ from the search string \\" to replace \" I get the output:

你好，"this"是我的字符串.

hello, "this" is my string.

这是正确的，但是我无法在我的前面加上转义序列的\开头，对于反斜杠使用\\，对于双引号则使用\".

Which is right, but I am unable to add the \ infront of my " with the escape sequence, \\ for backslash and \" for double quotes.

推荐答案

您如何验证字符串?如果将其打印到控制台(使用NSLog())，则会为您插入那些前导的反斜杠；尝试为其设置UILabel的文本，然后查看它是否以这种方式显示.您的代码看起来正确.

How are you verifying the string? If you print it to the console (using NSLog()), those leading backslashes will be inserted for you; try setting a UILabel's text to it, and see if it shows up that way. Your code looks correct.

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