first commit

moehu/moehu_fontend/lib/widget/WaterfallFlow/TileWidget.dart

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+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/widgets.dart';
+
+class TileWidget extends StatelessWidget {
+  const TileWidget(
+      {Key key, @required this.index, this.backgroundColor: Colors.green})
+      : super(key: key);
+
+  final int index;
+  final Color backgroundColor;
+
+  @override
+  Widget build(BuildContext context) {
+    return new Container(
+      color: this.backgroundColor,
+      child: new Center(
+          child: new CircleAvatar(
+        backgroundColor: Colors.white,
+        child: new Text('$index+1'),
+      )),
+    );
+  }
+}