NSString去除所有HTML标签

一般来说，干这种事正则才是王道。不过在ios上执行的效率貌似也高不了多少（第三方类库是在Obj-C的基础上写的），所以弄个一般的方法，基本满足需求就可以了。

废话不多说，直接上代码（google上能找到很多一样的代码）

- (NSString *)flattenHTML:(NSString *)html trimWhiteSpace:(BOOL)trim {

    NSScanner *theScanner = [NSScanner scannerWithString:html];

    NSString *text = nil;

 

    while ([theScanner isAtEnd] == NO) {

        // find start of tag

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

        // find end of tag         

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

        // replace the found tag with a space

        //(you can filter multi-spaces out later if you wish)

        html = [html stringByReplacingOccurrencesOfString:

                [ NSString stringWithFormat:@"%@>", text]

                                               withString:@""];

    }

 

    // trim off whitespace

    return trim ? [html stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] : html;  

}