字符串中去掉Html格式

- (NSString *)contentHandleContentWithHtmlString:(NSString *)htmlString {
      NSScanner * scanner = [NSScanner scannerWithString:htmlString];
      while ([scanner isAtEnd] == NO) {
          NSString * text = nil;
          [scanner scanUpToString:@"<" intoString:NULL];
          [scanner scanUpToString:@">" intoString:&text];
          if (text) {
                htmlString = [htmlString stringByReplacingOccurrencesOfString:[NSString stringWithFormat:@"%@>",text] withString:@""];
            }
        }
      return htmlString;
}