@Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
      case android.R.id.home:
        super.onBackPressed();
        Helper.isEditAllChecked = false;
        break;

      default:
        break;
    }
    return true;
  }
 @Override
 public void onBackPressed() {
   Helper.isEditAllChecked = false;
   super.onBackPressed();
 }