@Override
    protected void onProgressUpdate(Integer... values) {
        super.onProgressUpdate(values);
        progress.setText(values[0] + "%");
    }

    @Override
    protected Void doInBackground(Void... voids) {
        for (i = 0; i <= 100; ++i) {
            publishProgress(i);

            try {
                Thread.sleep(10);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            Log.i("progress", i + "");

        }
        return null;
    }