从可变目标c插入换行符 [英] Inserting a line break from a variable objective c

问题描述

我正在使用xml将数据提取到我的iPhone应用程序中.然后将xml值放入变量中.

I am pulling data into my iphone application using xml. The xml value is then placed in a variable.

示例变量:

123 London road \n London \n England

然后将该变量设置为标签.

The variable is then set as a label.

我希望换行符出现在标签中，而是打印\ n.

I want the line breaks to appear in the label, instead it is printing \n.

如果我手动设置标签值

locationLabel.text = @"123 London road \n London \n England"

它按我的意愿工作.

有人可以解释吗?

推荐答案

您必须将子字符串\n(由字符\和n组成)替换为实际的换行符(在C语言中表示)通过\n)，例如通过使用NSString的替换方法:

You have to replace the substrings \n (consisting of the characters \ and n) with the actual linebreak character (in C-sources expressed by \n), e.g. by using NSStrings replace methods:

NSString *res = [myStr stringByReplacingOccurrencesOfString:@"\\n" withString:@"\n"];

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