使用VideoView播放高质量Youtube视频

Question

null

Answer 1

    protected String[] extractLinks(String result) {
    //The title of the downloaded file
    String title = "bla bla bla";
    // An array of strings that will hold the links (in case of error, it will hold 1 string)
    String[] temper = new String[1];

    try{
        // Extract the "url_encoded_fmt_stream_map" attr from the flash object
        Pattern p = Pattern.compile("url_encoded_fmt_stream_map(.*?);");          
        Matcher m = p.matcher(result);
        List<String> matches = new ArrayList<String>();
        while(m.find()){
            matches.add(m.group().replace("url_encoded_fmt_stream_map=", "").replace(";", ""));                   
        }
        String[] streamMap = null;
        List<String> links = new ArrayList<String>();

        if(matches.get(0) != null &&  matches.get(0) != ""){
            // Split the "url_encoded_fmt_stream_map" into an array of strings that hold the link values
            streamMap = matches.get(0).split("%2C");
            for (int i = 0; i < streamMap.length; i++){
                String url = "";
                String sig = "";

                //Using regex, we will get the video url.
                Pattern p2 = Pattern.compile("url%3D(.*?)%26");       
                Matcher m2 = p2.matcher(streamMap[i]);
                List<String> matches2 = new ArrayList<String>();
                while(m2.find()){
                    // We don't need the "url=...&" part.
                    matches2.add(m2.group().substring(6, m2.group().length() - 3));
                }                     
                url = matches2.get(0);   

                //Using regex again, we will get the video signature.               
                p2 = Pattern.compile("sig%3D(.*?)%26");       
                m2 = p2.matcher(streamMap[i]);
                matches2 = new ArrayList<String>();
                while(m2.find()){
                // We don't need the "sig=...&" part.               
                    matches2.add(m2.group().substring(6, m2.group().length() - 3));
                }                     
                sig = matches2.get(0);   

                //Now lets add a link to our list. Link = url + sig + title.
                links.add(URLDecoder.decode(URLDecoder.decode(url + "&signature=", "UTF-8") + sig + "%26title%3D" + URLDecoder.decode(title, "UTF-8"), "UTF-8"));
            }
        }
        else{
        links.add("No download Links");
        }
        //Now lets make temper point to a array that holds the list items (aka links).
        temper = links.toArray(new String[links.size()]);
    }
    catch(Exception ex){
    temper[0] = ex.getMessage();
    }
    // That's it! temper has direct download links from youtube!
    return temper;
}