Default contacts demo to pinned AppBar (flutter#8445)

cbracken · web-flow · commit c54cc969056e · 2017-03-02T14:40:13.000-08:00
diff --git a/examples/flutter_gallery/lib/demo/contacts_demo.dart b/examples/flutter_gallery/lib/demo/contacts_demo.dart
@@ -93,7 +93,7 @@ class ContactsDemoState extends State<ContactsDemo> {
   static final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();
   final double _appBarHeight = 256.0;
 
-  AppBarBehavior _appBarBehavior;
+  AppBarBehavior _appBarBehavior = AppBarBehavior.pinned;
 
   @override
   Widget build(BuildContext context) {
