URL url = new URL(urlToDownload);
        URLConnection connection = url.openConnection();
        connection.connect();
        // this will be useful so that you can show a typical 0-100% progress bar
        int fileLength = connection.getContentLength();

        // download the file
        InputStream input = new BufferedInputStream(connection.getInputStream());
        OutputStream output = new FileOutputStream("/sdcard/BarcodeScanner-debug.apk");

        byte data[] = new byte[1024];
        long total = 0;
        int count;
        while ((count = input.read(data)) != -1) {
            total += count;
            // publishing the progress....
            Bundle resultData = new Bundle();
            resultData.putInt("progress" ,(int) (total * 100 / fileLength));
            receiver.send(UPDATE_PROGRESS, resultData);
            output.write(data, 0, count);
        }

        output.flush();
        output.close();
        input.close();

private  void srcDirs(String path)

  {
        File directory = new File(path);
        File [] DirList = directory.listFiles();

AssetManager assetManager = this.getAssets();
InputStream in = null;
OutputStream out = null;

for(File dirname: DirList)
{
    String fullPath = extStorageDirectory + "/Pictures/" +  dirname.getName(); // destination
    if(dirname.isFile())
    {
        try{
        in = assetManager.open(path);
        String newFileName = fullPath + "/"   + dirname ;
        out = new FileOutputStream(newFileName);

            byte[] buffer = new byte[1024];
            int read;
            while ((read = in.read(buffer)) != -1) {
                out.write(buffer, 0, read);
            }
            in.close();
            in = null;
            out.flush();
            out.close();
            out = null;


        }
        catch (Exception e) {
            Log.e("tag", e.getMessage());
        }

    }
   else if(dirname.isDirectory())
    {
        File desdir = new File(fullPath);

        if(!desdir.exists())
        {
            desdir.mkdirs();

        }

    }

}

<uses-permission
     android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />

URL url = new URL("10.../.././CPI"); // hypothetically
        URLConnection connection = url.openConnection();