myhomie_app/lib/Screens/Main/index.dart

import 'package:flutter/material.dart';
import 'package:myhomie_app/Components/Custom_Navigation_Bar/custom_nav_item.dart';
import 'package:myhomie_app/Models/homieContext.dart';

class Index with ChangeNotifier {
  int _index = 0;
  HomieAppContext _homieAppContext = new HomieAppContext();

  Index(this._index, this._homieAppContext);

  getIndex() => _index;
  setIndex(int index) {
    _index = index;
    notifyListeners();
  }

  getTitle() {
   switch(NavItemIcon.values[_index]) {
     case NavItemIcon.home:
       return "Home";
     case NavItemIcon.security:
       return "Security";
     case NavItemIcon.automations:
       return "Automations";
     case NavItemIcon.energy:
       return "Energy";
     case NavItemIcon.profile:
       return "Profile";
     /*case NavItemIcon.profile:
       if (_homieAppContext == null) {
         return '';
       }
       if (_homieAppContext.userId == null) {
         return 'null';
       }
       return _homieAppContext.userId;
       break;*/
   }
  }

}