جستجو در یک String

میتونید از RegEx استفاده کنید :

 public static List<String> extractUrls(String text) {
        List<String> containedUrls = new ArrayList<String>();
        String urlRegex = "((https?|ftp|gopher|telnet|file):((//)|(\\\\))+[\\w\\d:#@%/;$()~_?\\+-=\\\\\\.&]*)";
        Pattern pattern = Pattern.compile(urlRegex, Pattern.CASE_INSENSITIVE);
        Matcher urlMatcher = pattern.matcher(text);

        while (urlMatcher.find()) {
            containedUrls.add(text.substring(urlMatcher.start(0),
                    urlMatcher.end(0)));
        }

        return containedUrls;
    }

نمونه :

List<String> extractedUrls = extractUrls(
                "@m.h shared @planetdiscovery's post with you. See it at https://www.instagram.com/p/BFrNkgTHop4/?r=1661500049 Welcome to https://stackoverflow.com/ and here is another link http://www.google.com/ \n which is a great search engine");

        for (String url: extractedUrls) {
            //System.out.println(url);
            Log.i("URL_", url);
        }