@Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
      case R.id.action_pref:
        startActivity(new Intent(BaseActivity.this, PrefActivity.class));
        return true;
      case R.id.action_donate:
        IntentHelper.openWithBrowser(BaseActivity.this, getString(R.string.url_donate));
        return true;
      case R.id.action_feedback:
        mHuabanApp.sendFeedbackEmail();
        return true;
        //            case R.id.action_about:
        //                //...
        //                return true;
      case android.R.id.home:
        finish();
        return true;
    }

    return super.onOptionsItemSelected(item);
  }