fix scan barcode in slide menu

lib/presentation/screens/slide_menu/home_drawer.dart

@@ -12,6 +12,8 @@ import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:get/get.dart';
 import 'package:get/state_manager.dart';
 
+import '../../../main.dart';
+
 class HomeDrawer extends StatefulWidget {
   const HomeDrawer(
       {Key key,
@@ -223,8 +225,13 @@ class _HomeDrawerState extends State<HomeDrawer> {
         splashColor: Colors.grey.withOpacity(0.1),
         highlightColor: Colors.transparent,
         onTap: () {
-          currentDrawerIndex = listData.index;
-          navigationtoScreen(listData.index);
+          if (listData.index == DrawerIndex.ScanBarcode) {
+            scan(context);
+            navigationtoScreen(currentDrawerIndex);
+          } else {
+            currentDrawerIndex = listData.index;
+            navigationtoScreen(currentDrawerIndex);
+          }
         },
         child: Stack(
           children: <Widget>[

lib/presentation/screens/slide_menu/navigation_home_screen.dart

@@ -63,10 +63,6 @@ class _NavigationHomeScreenState extends State<NavigationHomeScreen> {
           screenView = ControlDeviceScreen();
         });
       } else if (drawerIndex == DrawerIndex.ScanBarcode) {
-        setState(() {
-          changeIndex(DrawerIndex.Home);
-          scan(context);
-        });
       } else {
         //do in your way......
       }