@Override
  public View onCreateView(
      LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    super.onCreateView(inflater, container, savedInstanceState);
    View v = inflater.inflate(R.layout.layout_list, container, false);

    File f = new File("/sys/block/mmcblk0/queue/iosched");
    String curSched = Helpers.getCurrentScheduler();
    File[] files = f.listFiles();
    if (files.length != 0) {
      MainActivity.menu.setEnabled(false);
      addPreferences();
      mCategory.setTitle(curSched + " Tweakable values");
    } else {
      Preference pref = new Preference(mContext);
      pref.setTitle("No tweakable values");
      pref.setSummary(curSched + " Doesn\'t have tweakable values");
      mCategory.addPreference(pref);
    }

    return v;
  }
      @Override
      protected String doInBackground(String... params) {
        if (mCategory.getPreferenceCount() != 0) {
          mCategory.removeAll();
        }

        File f = new File("/sys/block/mmcblk0/queue/iosched");
        File[] files = f.listFiles();
        for (File file : files) {
          String fileName = file.getName();
          String filePath = file.getAbsolutePath();
          final String fileContent = Helpers.getFileContent(file);
          CustomPreference pref = new CustomPreference(mContext, true, category);
          pref.setTitle(fileName);
          String color = "#ff0099cc";
          if (MainActivity.mPrefs.getBoolean(SettingsFragment.KEY_ENABLE_GLOBAL, false)) {
            int col =
                MainActivity.mPrefs.getInt(
                    SettingsFragment.KEY_GLOBAL_COLOR, Color.parseColor("#ff0099cc"));
            color = "#" + Integer.toHexString(col);
            pref.setTitleColor(color);
          } else {
            pref.setTitleColor(color);
          }
          pref.setSummary(fileContent);
          pref.setKey(filePath);
          mCategory.addPreference(pref);
          pref.setOnPreferenceClickListener(
              new OnPreferenceClickListener() {

                @Override
                public boolean onPreferenceClick(final Preference p) {
                  // TODO Auto-generated method stub
                  AlertDialog.Builder builder = new AlertDialog.Builder(mContext);
                  LinearLayout ll = new LinearLayout(mContext);
                  ll.setLayoutParams(
                      new LinearLayout.LayoutParams(
                          LinearLayout.LayoutParams.WRAP_CONTENT,
                          LinearLayout.LayoutParams.MATCH_PARENT));
                  final EditText et = new EditText(mContext);
                  LinearLayout.LayoutParams params =
                      new LinearLayout.LayoutParams(
                          LinearLayout.LayoutParams.MATCH_PARENT,
                          LinearLayout.LayoutParams.WRAP_CONTENT);
                  params.setMargins(40, 40, 40, 40);
                  params.gravity = Gravity.CENTER;
                  String val = p.getSummary().toString();
                  et.setLayoutParams(params);
                  et.setRawInputType(InputType.TYPE_CLASS_NUMBER);
                  et.setGravity(Gravity.CENTER_HORIZONTAL);
                  et.setText(val);
                  ll.addView(et);
                  builder.setView(ll);
                  builder.setPositiveButton(
                      "ok",
                      new DialogInterface.OnClickListener() {

                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                          // TODO Auto-generated method stub
                          String value = et.getText().toString();
                          p.setSummary(value);
                          // Log.d("TEST", "echo "+value+" > "+ p.getKey());
                          CMDProcessor.runSuCommand("echo " + value + " > " + p.getKey());
                          updateListDb(p, value, ((CustomPreference) p).isBootChecked());
                        }
                      });
                  AlertDialog dialog = builder.create();
                  dialog.show();
                  dialog.getWindow().getAttributes().windowAnimations = R.style.dialog_animation;
                  Window window = dialog.getWindow();
                  window.setLayout(800, LayoutParams.WRAP_CONTENT);
                  return true;
                }
              });
        }

        return "Executed";
      }