updated: using_listview example with working implementation

using_listview/lib/contact_page.dart

@@ -0,0 +1,33 @@
+import 'package:flutter/material.dart';
+import 'package:using_listview/contactlist/contact_list.dart';
+import 'package:using_listview/contactlist/modal/contact.dart';
+
+class ContactPage extends StatelessWidget {
+  _buildContactList() {
+    return <ContactModal>[
+      const ContactModal(
+          fullName: 'Romain Hoogmoed', email: 'romain.hoogmoed@example.com'),
+      const ContactModal(
+          fullName: 'Emilie Olsen', email: 'emilie.olsen@example.com'),
+      const ContactModal(
+          fullName: 'Nishant Srivastava', email: 'nishant.srivastava@example.com'),
+      const ContactModal(
+          fullName: 'Romain Hoogmoed', email: 'romain.hoogmoed@example.com'),
+      const ContactModal(
+          fullName: 'Emilie Olsen', email: 'emilie.olsen@example.com'),
+      const ContactModal(
+          fullName: 'Nishant Srivastava', email: 'nishant.srivastava@example.com'),
+      const ContactModal(
+          fullName: 'Romain Hoogmoed', email: 'romain.hoogmoed@example.com'),
+      const ContactModal(
+          fullName: 'Emilie Olsen', email: 'emilie.olsen@example.com'),
+      const ContactModal(
+          fullName: 'Nishant Srivastava', email: 'nishant.srivastava@example.com'),
+    ];
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return new Scaffold(body: new ContactsList(_buildContactList()));
+  }
+}

using_listview/lib/contactlist/contact_list.dart

@@ -0,0 +1,23 @@
+import 'package:flutter/material.dart';
+import 'package:using_listview/contactlist/contact_list_item.dart';
+import 'package:using_listview/contactlist/modal/contact.dart';
+
+class ContactsList extends StatelessWidget {
+  final List<ContactModal> _contactModal;
+
+  ContactsList(this._contactModal);
+
+  @override
+  Widget build(BuildContext context) {
+    return new ListView(
+      padding: new EdgeInsets.symmetric(vertical: 8.0),
+      children: _buildContactsList(),
+    );
+  }
+
+  List<ContactListItem> _buildContactsList() {
+    return _contactModal
+        .map((contact) => new ContactListItem(contact))
+        .toList();
+  }
+}

using_listview/lib/contactlist/contact_list_item.dart

@@ -0,0 +1,16 @@
+import 'package:flutter/material.dart';
+import 'package:using_listview/contactlist/modal/contact.dart';
+
+class ContactListItem extends StatelessWidget {
+  final ContactModal _contactModal;
+
+  ContactListItem(this._contactModal);
+
+  @override
+  Widget build(BuildContext context) {
+    return new ListTile(
+        leading: new CircleAvatar(child: new Text(_contactModal.fullName[0])),
+        title: new Text(_contactModal.fullName),
+        subtitle: new Text(_contactModal.email));
+  }
+}

using_listview/lib/contactlist/modal/contact.dart

@@ -0,0 +1,6 @@
+class ContactModal {
+  final String fullName;
+  final String email;
+
+  const ContactModal({this.fullName, this.email});
+}

using_listview/lib/main.dart

@@ -1,19 +1,13 @@
 import 'package:flutter/material.dart';
+import 'package:using_listview/contact_page.dart';
 
-void main() => runApp(new MyApp());
-
-class MyApp extends StatelessWidget {
-  // This widget is the root of your application.
-  @override
-  Widget build(BuildContext context) {
-    return new MaterialApp(
+void main() {
+  runApp(new MaterialApp(
     home: new Scaffold(
       appBar: new AppBar(
         title: new Text("Using Listview"),
       ),
-      body: new Center(
-        child: new Text("Hello World!"),
+      body: new ContactPage(),
     ),
   ));
-  }
 }