iOS-去掉字符串中的html标签的几种方法

方法一（单纯去除html标签）:

1. NSScanner去除标签

-(NSString *)filterHTML:(NSString *)html
{
    NSScanner * scanner = [NSScanner scannerWithString:html];
    NSString * text = nil;
    while([scanner isAtEnd]==NO)
    {
        //找到标签的起始位置
        [scanner scanUpToString:@"<" intoString:nil];
        //找到标签的结束位置
        [scanner scanUpToString:@">" intoString:&text];
        //替换字符
        html = [html stringByReplacingOccurrencesOfString:[NSString stringWithFormat:@"%@>",text] withString:@""];
    }
//    NSString * regEx = @"<([^>]*)>";
//    html = [html stringByReplacingOccurrencesOfString:regEx withString:@""];
    return html;
}

参考链接：http://www.cnblogs.com/machealking/p/4647012.html

• 正则去除标签

//正则去除标签
-(NSString *)getZZwithString:(NSString *)string{
    NSRegularExpression *regularExpretion=[NSRegularExpression regularExpressionWithPattern:@"<[^>]*>|\n"
                                                                                    options:0
                                                                                      error:nil];
    string=[regularExpretion stringByReplacingMatchesInString:string options:NSMatchingReportProgress range:NSMakeRange(0, string.length) withTemplate:@""];
    return string;
}

方法二（转化html标签为富文本）:

//转化html标签为富文本
+ (NSMutableAttributedString *)praseHtmlStr:(NSString *)htmlStr {
    NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithData:[htmlStr dataUsingEncoding:NSUnicodeStringEncoding] options:@{NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType,NSCharacterEncodingDocumentAttribute :@(NSUTF8StringEncoding)} documentAttributes:nil error:nil];
    [attributedString addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:13] range:NSMakeRange(0, attributedString.length)];
    [attributedString addAttribute:NSForegroundColorAttributeName value:CommonColor(Color333333) range:NSMakeRange(0, attributedString.length)];
    
    return attributedString;
}