Util for finding components of Toolbar such as navigation icon view

ToolbarNavigationUtil.java

public class ToolbarNavigationUtil{
    public static View getToolbarNavigationIcon(Toolbar toolbar){
        //check if contentDescription previously was set
        boolean hadContentDescription = TextUtils.isEmpty(toolbar.getNavigationContentDescription());
        String contentDescription = !hadContentDescription ? toolbar.getNavigationContentDescription() : "navigationIcon";
        toolbar.setNavigationContentDescription(contentDescription);
        ArrayList<View> potentialViews = new ArrayList<View>();
        //find the view based on it's content description, set programatically or with android:contentDescription
        toolbar.findViewsWithText(potentialViews,contentDescription, View.FIND_VIEWS_WITH_CONTENT_DESCRIPTION);
        //Nav icon is always instantiated at this point because calling setNavigationContentDescription ensures its existence 
        View navIcon = null;
        if(potentialViews.size() > 0){
            navIcon = potentialViews.get(0); //navigation icon is ImageButton
        }
         //Clear content description if not previously present
        if(hadContentDescription)
            toolbar.setNavigationContentDescription(null);
        return navIcon;
     }
     
     public static TextView getToolbarTitleView(ActionBarActivity activity, Toolbar toolbar){
        ActionBar actionBar = activity.getSupportActionBar();
        CharSequence actionbarTitle = null;
        if(actionBar != null)
            actionbarTitle = actionBar.getTitle();
        actionbarTitle = TextUtils.isEmpty(actionbarTitle) ? toolbar.getTitle() : actionbarTitle;
        if(TextUtils.isEmpty(actionbarTitle)) return null;
        // can't find if title not set
        for(int i= 0; i < toolbar.getChildCount(); i++){
            View v = toolbar.getChildAt(i);
            if(v != null && v instanceof TextView){
                TextView t = (TextView) v;
                CharSequence title = t.getText();
                if(!TextUtils.isEmpty(title) && actionbarTitle.equals(title) && t.getId() == View.NO_ID){
                    //Toolbar does not assign id to views with layout params SYSTEM, hence getId() == View.NO_ID
                    //in same manner subtitle TextView can be obtained.
                    return t;
                }
            }
        }
        return null;
   }

}