add activity

.gitignore

 .DS_Store
+.history
 .dart_tool/
 
 .packages

lib/ActivityReportModel/page/AnimationList.dart

@@ -37,20 +37,13 @@ class _AnimatedListSampleState extends State<AnimatedListSample> {
         _listKey.currentState.insertItem(length, duration: Duration(milliseconds: seconds));
       });
     });
-    return new MaterialApp(
-      home: new Scaffold(
-        appBar: new AppBar(
-          title: Text('${_list.length}')
-        ),
-        body: new Padding(
+    return Padding(
       padding: const EdgeInsets.all(16.0),
       child: new AnimatedList(
         key: _listKey,
         initialItemCount: _list.length,
         itemBuilder: _buildItem,
       ),
-        ),
-      ),
     );
   }
 
@@ -69,14 +62,14 @@ class CardItem extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     TextStyle textStyle = Theme.of(context).textTheme.display1;
-    return new Padding(
+    return Padding(
       padding: const EdgeInsets.all(2.0),
-      child: new SizeTransition(
+      child: SizeTransition(
         axis: Axis.vertical,
         sizeFactor: animation,
-        child:SizedBox(
+        child: SizedBox(
           height: 100,
-          child: Text('Item ${item['b']}', style: textStyle),
+          child: Text('Item $item', style: textStyle),
         )
       )
     );