如何将NSString HTML标记转换为纯文本NSString？ [英] How to convert NSString HTML markup to plain text NSString?

问题描述

正在搜索网络，以查看如何将HTML字符串标记转换为纯文本的示例。

我从包含 HTML 的提要中获取我的信息，然后在文本视图中显示此信息。 UITextView 是否有一个属性来转换 HTML 或者我必须在代码中执行它。我试过：

pre $ n code $ NSString * str = [NSString stringWithCString：self.fullText encoding：NSUTF8StringEndcoding];

但似乎不起作用。任何人有任何想法？

解决方案

你可以通过使用NSScanner类解析html来完成。

   - （NSString *）flattenHTML：（NSString *）html {
 
 NSScanner * theScanner; 
 NSString * text = nil; 
 theScanner = [NSScanner scannerWithString：html]; （[theScanner isAtEnd] == NO）{
 
 [theScanner scanUpToString：@< intoString：NULL]; 
 
 [theScanner scanUpToString：@> intoString：& text]; 
 
 html = [html stringByReplacingOccurrencesOfString：[NSString stringWithFormat：@％@>，text] withString：@]; 
} 
 // 
 html = [html stringByTrimmingCharactersInSet：[NSCharacterSet whitespaceAndNewlineCharacterSet]]; 
 
返回html; 
} 
  

希望这有助于您。

Been searching the net for an example of how to convert HTML string markup into Plain text.

I get my information from a feed which contains HTML, I then display this information in a Text View. does the UITextView have a property to convert HTML or do I have to do it in code. I tried:

NSString *str = [NSString stringWithCString:self.fullText encoding:NSUTF8StringEndcoding];

but doesn't seem to work. Anyone got any ideas?

解决方案

You can do it by parsing the html by using NSScanner class

- (NSString *)flattenHTML:(NSString *)html {

    NSScanner *theScanner;
    NSString *text = nil;
    theScanner = [NSScanner scannerWithString:html];

    while ([theScanner isAtEnd] == NO) {

        [theScanner scanUpToString:@"<" intoString:NULL] ; 

        [theScanner scanUpToString:@">" intoString:&text] ;

        html = [html stringByReplacingOccurrencesOfString:[NSString stringWithFormat:@"%@>", text] withString:@""];
    }
    //
    html = [html stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];

    return html;
}

Hope this helps.

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