圆形图片并裁剪

lib/liangjialin/liangjialin.dart

@@ -37,7 +37,7 @@ class LiangjialinHome extends StatelessWidget{
                       builder: (context) => liangjialin_image(),
                     ));
               },
-              child: Text("图片组件Demo"),
+              child: Text("网络加载图片并裁剪"),
             ),
           ],
         ),

lib/liangjialin/liangjialin_image.dart

 import 'package:flutter/material.dart';
 
-class liangjialin_image extends StatelessWidget{
+class liangjialin_image extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    // TODO: implement build
-    return MaterialApp(
-      title: "梁佳霖",
-      home: new Scaffold(
-        appBar: AppBar(title:Text('梁佳霖'),centerTitle: true),
+    return new MaterialApp(
+        title: '图片Demo',
+        home: Scaffold(
+          appBar: AppBar(title: Text("网络获取图片裁剪"),centerTitle: true,),
+          body: ImageDemoSection(),
+        )
+    );
+  }
+}
+
+class ImageDemoSection extends StatelessWidget{
+
+  @override
+  Widget build(BuildContext context) {
+
+    return new Center(
+        child: new Container(
+          width: 300,
+          height: 300,
+          decoration: BoxDecoration(
+            color: Colors.green,
+            borderRadius: BorderRadius.all(Radius.circular(150.0)),
+            image: DecorationImage(
+                image: new NetworkImage('https://flylai.com/wp-content/uploads/2019/02/flutter_bg2-576x1024.png'),
+                fit: BoxFit.cover
+            ),
           ),
+        )
     );
   }
 }
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