swift 4 两种方式匹配文本中包含的URL链接

swift 4 两种方式匹配文本中包含的URL链接

let content = "分享发红包的风格白癜风蝙蝠侠发布大风风格的分公司的\n奋斗故事如果生日公司的人过


"

            let regularRange = NSRange(location: 0, length: content.count)

            //利用NSDataDetector直接匹配出url链接
            guard let detector = try? NSDataDetector(types: NSTextCheckingResult.CheckingType.link.rawValue) else { return }
            detector.enumerateMatches(in: content, options: [], range: regularRange) { (textCheckingResult, falgs, nil) in
                print(textCheckingResult?.url ?? "没有链接")
            }

            //利用正则匹配
            let pattern = "]*?src=\"(.*?)\">"
            guard let regularExpression = try? NSRegularExpression.init(pattern: pattern, options: .dotMatchesLineSeparators) else { return }
            let regularResults = regularExpression.matches(in: content, options: NSRegularExpression.MatchingOptions(rawValue: 0), range: regularRange)

            for textCheckingResult in regularResults {
                //查找到的范围数量
                // 0: 和匹配方案完全一致的字符串
                // 1: ()中需要匹配的字符串
                for idx in 0..let range = textCheckingResult.rangeAt(idx)
                    let subStr = (content as NSString).substring(with: range)
                    print("\(range)--\(subStr)")
                }
            }
            print("=================")

https://img.aifootball365.cn/product/community/images/20180518/1526627127931.png
https://img.aifootball365.cn/product/community/images/20180518/1526627132497.png
https://img.aifootball365.cn/product/community/images/20180518/1526627137298.png
{40, 92}--"https://img.aifootball365.cn/product/community/images/20180518/1526627127931.png">
{50, 80}--https://img.aifootball365.cn/product/community/images/20180518/1526627127931.png
{133, 92}--"https://img.aifootball365.cn/product/community/images/20180518/1526627132497.png">
{143, 80}--https://img.aifootball365.cn/product/community/images/20180518/1526627132497.png
{226, 92}--"https://img.aifootball365.cn/product/community/images/20180518/1526627137298.png">
{236, 80}--https://img.aifootball365.cn/product/community/images/20180518/1526627137298.png
=================