private void initPaintView() {

    creator = new PaintPadViewCreator((BaseActivity) getActivity(), container_ll);
    View v = creator.getView();
    v.setFocusable(true);
    v.setFocusableInTouchMode(true);
  }
  /**
   * @param canPrevious
   * @param canNext
   */
  private void changeUIWithField(boolean canPrevious, boolean canNext) {

    number_tv2.setText(number);
    score_tv4.setText(score);
    state_tv6.setText(state);
    content_wv1.loadUrl(content);
    answer_wv2.loadUrl(answerofSta);
    answer_tv10.setText(textAnswer);

    score_et1.setText(point);
    textofTeacher_et2.setText(textOfTeacher);
    setButton(canPrevious, canNext);

    if (answerofStu != null && !answerofStu.equals("")) {
      container_ll.setVisibility(View.VISIBLE);
      if (answerofTea != null) {
        creator.loadExsitedImage(answerofTea);
      } else {
        imageLoader.loadImageBitmap(answerofStu);
      }
    } else {
      container_ll.setVisibility(View.GONE);
    }
  }
            @Override
            public void onImageBitmapLoaded(Bitmap bitmap) {

              creator.setbg(bitmap);
            }