Resolves #178

lib/main.dart

@@ -491,10 +491,15 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver {
 
   final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();
 
-  Scaffold _buildScaffold(bool empty) {
-    return Scaffold(
-      key: _scaffoldKey,
-      appBar: AppBar(
+  Widget _buildScaffoldBody(bool empty) {
+    return NestedScrollView(
+      headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) {
+        return <Widget>[
+          SliverAppBar(
+            //expandedHeight: 100.0,
+            floating: true,
+            pinned: true,
+            primary: true,
             title: _buildAppTitle(),
             leading: IconButton(
               icon: Icon(Icons.menu),
@@ -505,13 +510,18 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver {
                 });
               },
             ),
-        primary: true,
+            flexibleSpace: FlexibleSpaceBar(
+              centerTitle: false,
+              //title: _buildAppTitle(),
+            ),
             bottom: empty ? null : TabBar(
               tabs: buildUIViewTabs(),
               isScrollable: true,
             ),
           ),
-      drawer: _buildAppDrawer(),
+
+        ];
+      },
       body: empty ?
       Center(
         child: Column(
@@ -526,7 +536,7 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver {
         ),
       )
           :
-        _homeAssistant.buildViews(context, _useLovelaceUI)
+      _homeAssistant.buildViews(context, _useLovelaceUI),
     );
   }
 
@@ -534,11 +544,19 @@ class _MainPageState extends State<MainPage> with WidgetsBindingObserver {
   Widget build(BuildContext context) {
     // This method is rerun every time setState is called.
     if (_homeAssistant.ui == null || _homeAssistant.ui.views == null) {
-      return _buildScaffold(true);
+      return Scaffold(
+        key: _scaffoldKey,
+        drawer: _buildAppDrawer(),
+        body: _buildScaffoldBody(true)
+      );
     } else {
-      return DefaultTabController(
-          length: _homeAssistant.ui.views.length,
-          child: _buildScaffold(false)
+      return Scaffold(
+        key: _scaffoldKey,
+        drawer: _buildAppDrawer(),
+        body: DefaultTabController(
+          length: _homeAssistant.ui?.views?.length ?? 0,
+          child: _buildScaffoldBody(false),
+        ),
       );
     }
   }