added a page to view individual listings, switched from list to map

lib/main.dart

@@ -17,6 +17,7 @@
 
 import 'package:buyeeb_mobile/pages/main_page.dart';
 import 'package:buyeeb_mobile/pages/splash.dart';
+import 'package:buyeeb_mobile/pages/view_listing.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'models/user_listings.dart';
@@ -30,6 +31,7 @@ void main() {
           routes: {
             '/': (context) => RouteHome(),
             '/splash': (context) => RouteSplash(),
+            '/view_listing': (context) => RouteViewListing(),
           },
 
           title: "Buypeeb Mobile",

lib/models/user_listings.dart

@@ -3,17 +3,18 @@ import 'package:buyeeb_mobile/models/yahoo_auctions_item.dart';
 import 'package:flutter/foundation.dart';
 
 class UserListings extends ChangeNotifier {
-  final List<YahooAuctionsItem> _items = [];
+  // final List<YahooAuctionsItem> _items = [];
+  final Map<String, YahooAuctionsItem> _items = {};
 
-  UnmodifiableListView<YahooAuctionsItem> get items => UnmodifiableListView(_items);
+  UnmodifiableMapView<String, YahooAuctionsItem> get items => UnmodifiableMapView(_items);
 
-  void add (YahooAuctionsItem item) {
-    _items.add(item);
+  void add (String key, YahooAuctionsItem item) {
+    _items[key] = item;
     notifyListeners();
   }
 
-  void remove(YahooAuctionsItem item) {
-    _items.remove(item);
+  void remove(String key) {
+    _items.remove(key);
     notifyListeners();
   }
 

lib/models/yahoo_auctions_item.dart

@@ -1,12 +1,10 @@
 import 'package:flutter/foundation.dart';
 
 class YahooAuctionsItem {
-  String id;
   String name;
   int price;
 
   YahooAuctionsItem({
-    @required this.id,
     @required this.name,
     @required this.price
   });

lib/pages/main_page.dart

@@ -52,13 +52,23 @@ class _MainPageState extends State<MainPage> {
       padding: EdgeInsets.all(8.0),
       separatorBuilder: (context, i) => Divider(),
       itemCount: listings.items.length,
-      itemBuilder: (context, i) => ListTile(
-        title: Text(listings.items[i].name),
+      itemBuilder: (context, i) {
+        String key = listings.items.keys.elementAt(i);
+        return ListTile(
+            title: Text(listings.items[key].name),
             subtitle: Text(sprintf(
               "¥%d (≈\$%2.2f)",
-            [listings.items[i].price, listings.items[i].getLocalPrice()]
+              [listings.items[key].price, listings.items[key].getLocalPrice()]
             )),
-      ),
+            onTap: () {
+              Navigator.pushNamed(
+                context,
+                '/view_listing',
+                arguments: key
+              );
+            }
+        );
+      }
     );
   }
 }

lib/pages/splash.dart

@@ -18,8 +18,9 @@ class _RouteSplashState extends State<RouteSplash> {
     var _rng = new Random();
     final names = ["Hi Pempa!", "Pebulon Crystal", "The Peebler Chronicles", "Pecha Sludge", "The Forbidden Book of Peebus"];
     for (var i = 0; i < 15; i++) {
-      listings.add(YahooAuctionsItem(
-          id: "Henlo",
+      listings.add(
+          "k" + (_rng.nextInt(500000) + 100000).toString(),
+          YahooAuctionsItem(
           name: names[_rng.nextInt(names.length)],
           price: _rng.nextInt(5000) + 500
       ));

lib/pages/view_listing.dart

@@ -0,0 +1,26 @@
+import 'package:flutter/material.dart';
+
+class RouteViewListing extends StatefulWidget {
+  @override
+  _RouteViewListingState createState() => _RouteViewListingState();
+}
+
+class _RouteViewListingState extends State<RouteViewListing> {
+  @override
+  Widget build(BuildContext context) {
+    final String id = ModalRoute.of(context).settings.arguments;
+    return Scaffold(
+      appBar: AppBar(
+        title: Text("View listing"),
+        automaticallyImplyLeading: false, // remove the useless back button
+      ),
+      body: ListView(
+        children: [
+          ListTile(
+            title: Text("ID: $id")
+          )
+        ]
+      )
+    );
+  }
+}