some modifications

lib/openlp_remote_app.dart

@@ -14,14 +14,11 @@ class _OpenLPRemoteAppState extends State<OpenLPRemoteApp>
     with SingleTickerProviderStateMixin {
   TabController tabController;
   SearchFloatingButton searchActionButton;
-  int tabBarIndex;
 
   @override
   void initState() {
     super.initState();
-    tabBarIndex = 0;
+    tabController = TabController(length: 2, vsync: this);
-    tabController =
-        TabController(length: 2, vsync: this, initialIndex: tabBarIndex);
     searchActionButton = SearchFloatingButton();
   }
 
@@ -46,11 +43,6 @@ class _OpenLPRemoteAppState extends State<OpenLPRemoteApp>
               Tab(text: 'SLIDES'),
             ],
             controller: tabController,
-            onTap: (index) {
-              setState(() {
-                tabBarIndex = index;
-              });
-            },
           ),
         ),
         floatingActionButton: searchActionButton,

lib/screens/service_screen.dart

@@ -0,0 +1,15 @@
+import 'package:flutter/material.dart';
+
+class ServiceScreen extends StatefulWidget {
+  @override
+  _ServiceScreenState createState() => _ServiceScreenState();
+}
+
+class _ServiceScreenState extends State<ServiceScreen> {
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      child: Text('Nothing here...'),
+    );
+  }
+}