添加Row Expanded 填充

lib/widgets/elements/Frame/Layout/Row/demo.dart

@@ -1,3 +1,4 @@
+ import 'package:flutter/material.dart';
 /// Author: xiaojia.dxj
  /// Date: 2018/11/22
  /// Email: xiaojia.dxj@alibaba-inc.com
@@ -92,3 +93,34 @@ class RowLayoutCreate extends StatelessWidget {
     );
   }
 }
+
+class RowExpanded extends StatelessWidget{
+  @override
+  Widget build(BuildContext context) {
+
+    return Row(
+      children: <Widget>[
+        ////填充数据
+        Expanded(child: new RaisedButton(
+            onPressed: (){
+            },
+            color: Color(0xfffce4ec),
+            child:new Text('flutter',style: TextStyle(color: Colors.white),)
+        ),),
+        Expanded(child: new RaisedButton(
+            onPressed: (){
+            },
+            color: Color(0xfff8bbd0),
+            child:new Text('Expanded',style: TextStyle(color: Colors.white),)
+        ),),
+        Expanded(child: new RaisedButton(
+            onPressed: (){
+            },
+            color: Color(0xfff48fb1),
+            child:new Text('flutter',style: TextStyle(color: Colors.white),)
+        ),),
+      ],
+    );
+  }
+
+}

lib/widgets/elements/Frame/Layout/Row/index.dart

@@ -60,6 +60,8 @@ class _DemoState extends State<Demo> {
     return  Column(
       children: <Widget>[
         RowLayoutCreate(),
+        SizedBox(height: 10.0,),
+        RowExpanded(),
         Row(
           children: <Widget>[
             Expanded(