Israel Perez's CollectionView Feedback

CollectionViewChallenge/CollectionViewChallenge/RssFeedItem.cs

@@ -0,0 +1,12 @@
+namespace CollectionViewChallenge
+{
+    public class RssFeedItem
+    {
+        public string Title { get; set; }
+        public string Description { get; set; }
+        public string Link { get; set; }
+        public string AuthorEmail { get; set; }
+        public int Id { get; set; }
+        public string PublishDate { get; set; }
+    }
+}

CollectionViewChallenge/CollectionViewChallenge/Views/CollectionViewChallengePage.xaml

@@ -1,32 +1,41 @@
-<?xml version="1.0" encoding="utf-8" ?>
-<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
-             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
-             xmlns:d="http://xamarin.com/schemas/2014/forms/design"
-             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-             mc:Ignorable="d"
-             x:Class="CollectionViewChallenge.Views.CollectionViewChallengePage">
+<?xml version="1.0" encoding="utf-8"?>
+<ContentPage xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" xmlns:d="http://xamarin.com/schemas/2014/forms/design" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" x:Class="CollectionViewChallenge.Views.CollectionViewChallengePage">
     <ContentPage.Content>
-        <StackLayout>
-            <!-- Use your own layout and functionality here! -->
-            <CollectionView>
-                <CollectionView.ItemsSource>
-                    <x:Array Type="{x:Type x:String}">
-                        <x:String>This is a CollectionView!</x:String>
-                        <x:String>Your feedback on the experience of converting a ListView to a CollectionView is incredibly appreciated.</x:String>
-                        <x:String>Here are three general questions:</x:String>
-                        <x:String>1. How was the experience of converting your existing ListView to a CollectionView?</x:String>
-                        <x:String>2. How is the performance compared to the ListView?</x:String>
-                        <x:String>3. Is there a specific piece of functionality that you'd like to see?</x:String>
-                    </x:Array>
-                </CollectionView.ItemsSource>
+        <StackLayout Padding="15, 25, 15, 15" Spacing="10" HorizontalOptions="CenterAndExpand" VerticalOptions="CenterAndExpand">
+        <Label FontSize="18" Text="Lector de RSS con CollectionView">
+            </Label>
+            <CollectionView x:Name="clvRssItems">
                 <CollectionView.ItemTemplate>
                     <DataTemplate>
-                        <StackLayout Padding="5">
-                            <Label Text="{Binding .}" d:Text="Design Time Data" FontSize="10"/>
+                        <StackLayout Spacing="10" Padding="15">
+                            <Label Text="{Binding Title}" FontSize="16">
+                            </Label>
+                            <Label Text="{Binding AuthorEmail}" FontSize="12">
+                            </Label>
+                            <Label Text="{Binding PublishDate}" FontSize="12">
+                            </Label>
                         </StackLayout>
                     </DataTemplate>
                 </CollectionView.ItemTemplate>
             </CollectionView>
+            <!--<Label FontSize="18" Text="Lector de RSS con ListView">
+            </Label>
+            <ListView x:Name="lstRssItems" HasUnevenRows="true" >
+                <ListView.ItemTemplate>
+                    <DataTemplate>
+                        <ViewCell>
+                            <StackLayout Spacing="10" Padding="15">
+                                <Label Text="{Binding Title}" FontSize="16">
+                                </Label>
+                                <Label Text="{Binding AuthorEmail}" FontSize="12">
+                                </Label>
+                                <Label Text="{Binding PublishDate}" FontSize="12">
+                                </Label>
+                            </StackLayout>
+                        </ViewCell>
+                    </DataTemplate>
+                </ListView.ItemTemplate>
+            </ListView>-->
         </StackLayout>
     </ContentPage.Content>
-</ContentPage>
+</ContentPage>

CollectionViewChallenge/CollectionViewChallenge/Views/CollectionViewChallengePage.xaml.cs

@@ -1,9 +1,8 @@
-using System;
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.Linq;
-using System.Text;
+using System.Net.Http;
 using System.Threading.Tasks;
-
+using System.Xml.Linq;
 using Xamarin.Forms;
 using Xamarin.Forms.Xaml;
 
@@ -16,5 +15,49 @@ public CollectionViewChallengePage()
         {
             InitializeComponent();
         }
+
+        protected override void OnAppearing()
+        {
+            base.OnAppearing();
+            LoadItems();
+        }
+
+        private async void LoadItems()
+        {
+            // cargando la lista de elementos de rss
+            using (HttpClient client = new HttpClient())
+            {
+                HttpResponseMessage response = await client.GetAsync("https://www.excelsior.com.mx/rss.xml");
+                if (response.IsSuccessStatusCode)
+                {
+                    string rssFeedList = await response.Content.ReadAsStringAsync();
+                    clvRssItems.ItemsSource = await ParseFeed(rssFeedList);
+                    //lstRssItems.ItemsSource = await ParseFeed(rssFeedList);
+                }
+                else
+                {
+                    await App.Current.MainPage.DisplayAlert("Rss Feed", "Algo falló", "Aceptar");
+                }
+            }
+        }
+
+        private async Task<List<RssFeedItem>> ParseFeed(string rss)
+        {
+            return await Task.Run(() =>
+            {
+                var xdoc = XDocument.Parse(rss);
+                var id = 0;
+                return (from item in xdoc.Descendants("item")
+                        select new RssFeedItem
+                        {
+                            Title = (string)item.Element("title"),
+                            Description = (string)item.Element("description"),
+                            Link = (string)item.Element("link"),
+                            PublishDate = (string)item.Element("pubDate"),
+                            AuthorEmail = (string)item.Element("author"),
+                            Id = id++
+                        }).ToList();
+            });
+        }
     }
-}
+}