Wednesday, August 24, 2011

Happy Birthday Aximedia Soft

Today is the birthday of Aximedia Soft LLC. Happy birthday Aximedia Soft! С днём рождения Аксимедиа Софт! Bonne anniversaire Aximedia Soft! 生日快乐 Aximedia Soft!

Tuesday, August 23, 2011

An error has occurred. Please try again later

I'm suddenly discovered that when tried to open Android Market on Android a message appeared:
"An error has occurred. Please try again later"

To get rid of it you just need to enable Background data checkbox:

This item is located here:
Settings -> Accounts & sync -> Background data

Friday, August 19, 2011

Android upload progress

Some time ago I got a task to create a file uploader for Android. Writing file uploader code it not difficult and I’ve done it quickly. To indicate the uploading progress I’ve shown standard rotating progress control while uploading.
But it’s not quite clear for users. Much better is to show the usual progress bar with bytes uploaded and total size. So I decided to implement this user friendliness.
Source code of BackgroundUploader class is here:

class BackgroundUploader extends AsyncTask<Void, Integer, Void> implements DialogInterface.OnCancelListener {

  private ProgressDialog progressDialog;
  private String url;
  private File file;

   public BackgroundUploader(String url, File file) {
    this.url = url;
    this.file = file;

  protected void onPreExecute() {
    progressDialog = new ProgressDialog(context);
    progressDialog.setMax((int) file.length());;

  protected Void doInBackground(Void... v) {
    HttpURLConnection connection = null;
    String fileName = file.getName();
    try {
      connection = (HttpURLConnection) new URL(url).openConnection();
      String boundary = "---------------------------boundary";
      String tail = "\r\n--" + boundary + "--\r\n";
      connection.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + boundary);

      String metadataPart = "--" + boundary + "\r\n"
          + "Content-Disposition: form-data; name=\"metadata\"\r\n\r\n"
          + "" + "\r\n";

      String fileHeader1 = "--" + boundary + "\r\n"
          + "Content-Disposition: form-data; name=\"uploadfile\"; filename=\""
          + fileName + "\"\r\n"
          + "Content-Type: application/octet-stream\r\n"
          + "Content-Transfer-Encoding: binary\r\n";

       long fileLength = file.length() + tail.length();
      String fileHeader2 = "Content-length: " + fileLength + "\r\n";
      String fileHeader = fileHeader1 + fileHeader2 + "\r\n";
      String stringData = metadataPart + fileHeader;

      long requestLength = stringData.length() + fileLength;
      connection.setRequestProperty("Content-length", "" + requestLength);
      connection.setFixedLengthStreamingMode((int) requestLength);

      DataOutputStream out = new DataOutputStream(connection.getOutputStream());

      int progress = 0;
      int bytesRead = 0;
      byte buf[] = new byte[1024];
      BufferedInputStream bufInput = new BufferedInputStream(new FileInputStream(file));
      while ((bytesRead = != -1) {
        // write output
        out.write(buf, 0, bytesRead);
        progress += bytesRead;
        // update progress bar

       // Write closing boundary and close stream

       // Get server response
      BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
      String line = "";
      StringBuilder builder = new StringBuilder();
      while((line = reader.readLine()) != null) {

    } catch (Exception e) {
      // Exception
    } finally {
      if (connection != null) connection.disconnect();

    return null;

  protected void onProgressUpdate(Integer... progress) {
    progressDialog.setProgress((int) (progress[0]));

  protected void onPostExecute(Void v) {

  public void onCancel(DialogInterface dialog) {

* This source code was highlighted with Source Code Highlighter.

To execute file uploader the next code should be used:

new BackgroundUploader(url, file).execute();

I wrote the code based on the

Friday, August 5, 2011

Wifi интернет для HTC с ноутбука

Для отладки проектов на HTC устройстве под управлением Android, потребовалось наличие на устройстве интернета.

Настроить интернет на устройстве, имея ноутбук с wifi, можно с помощью программы Virtual Router.

Данная программа позволяет создать wifi точку доступа на компьютере с ОС Windows 7 или Windows 2008 R2.

Скачать программу можно с сайта проекта