doInBackground

protected String doInBackground(String... aurl) {
            int count;

        try {

        URL url2 = new URL(aurl[0]);
        URLConnection conexion = url2.openConnection();
        conexion.connect();

        int lenghtOfFile = conexion.getContentLength();
        Log.d("ANDRO_ASYNC", "Lenght of file: " + lenghtOfFile);

        //String version = Build.USER;

        InputStream input = new BufferedInputStream(url2.openStream());
        OutputStream output = new FileOutputStream(Environment.getExternalStorageDirectory() + "/MIUIPolska_" + device + "_" + upversion + "-" + realbase + ".zip");

        byte data[] = new byte[1024];

        long total = 0;

            while (((count = input.read(data)) != -1) && (this.isCancelled()==false)){
                total += count;
                publishProgress(""+(int)((total*100)/lenghtOfFile));
                output.write(data, 0, count);
            }
            //String mixtapefilename = "miuipl_hotfix.zip";
            //String zipname = mixtapefilename;
            //String path = Environment.getExternalStorageDirectory() + "/";
            //unpackZip(path, zipname);

            output.flush();
            output.close();
            input.close();
        } catch (Exception e) {}
        return null;

        }