@Override
 public void setActionBarDescription(int contentDescRes) {
   final ActionBar actionBar = mActivity.getActionBar();
   if (actionBar != null) {
     actionBar.setHomeActionContentDescription(contentDescRes);
   }
 }
 @Override
 public void setActionBarUpIndicator(Drawable drawable, int contentDescRes) {
   final ActionBar actionBar = mActivity.getActionBar();
   if (actionBar != null) {
     actionBar.setHomeAsUpIndicator(drawable);
     actionBar.setHomeActionContentDescription(contentDescRes);
   }
 }