summaryrefslogtreecommitdiff
path: root/Xamarin.Forms.Controls/GalleryPages/ListViewDemoPage.cs
diff options
context:
space:
mode:
Diffstat (limited to 'Xamarin.Forms.Controls/GalleryPages/ListViewDemoPage.cs')
-rw-r--r--Xamarin.Forms.Controls/GalleryPages/ListViewDemoPage.cs231
1 files changed, 231 insertions, 0 deletions
diff --git a/Xamarin.Forms.Controls/GalleryPages/ListViewDemoPage.cs b/Xamarin.Forms.Controls/GalleryPages/ListViewDemoPage.cs
new file mode 100644
index 00000000..a30ec170
--- /dev/null
+++ b/Xamarin.Forms.Controls/GalleryPages/ListViewDemoPage.cs
@@ -0,0 +1,231 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Xamarin.Forms;
+
+namespace Xamarin.Forms.Controls
+{
+ internal class ListViewDemoPage : ContentPage
+ {
+ class Person
+ {
+ public Person(string name, DateTime birthday, Color favoriteColor)
+ {
+ Name = name;
+ Birthday = birthday;
+ FavoriteColor = favoriteColor;
+ }
+
+ public string Name { private set; get; }
+
+ public DateTime Birthday { private set; get; }
+
+ public Color FavoriteColor { private set; get; }
+ };
+
+ class MyDataTemplateSelector : DataTemplateSelector
+ {
+ DataTemplate _oddTemplate;
+ DataTemplate _evenTemplate;
+
+ public MyDataTemplateSelector ()
+ {
+ _evenTemplate = new DataTemplate (() => {
+ // Create views with bindings for displaying each property.
+ Label nameLabel = new Label ();
+ nameLabel.SetBinding (Label.TextProperty, "Name");
+
+ Label birthdayLabel = new Label ();
+ birthdayLabel.SetBinding (Label.TextProperty,
+ new Binding ("Birthday", BindingMode.OneWay,
+ null, null, "Born {0:d}"));
+
+ BoxView boxView = new BoxView ();
+ boxView.SetBinding (BoxView.ColorProperty, "FavoriteColor");
+
+ // Return an assembled ViewCell.
+ return new ViewCell {
+ View = new StackLayout {
+ Padding = new Thickness (0, 5),
+ Orientation = StackOrientation.Horizontal,
+ Children = {
+ new Image {
+ HeightRequest = 40,
+ WidthRequest = 40,
+ Source = new UriImageSource {
+ // CacheValidity = TimeSpan.FromSeconds (10),
+ Uri = new Uri ("https://xamarin.com/content/images/pages/index/xamarin-studio-icon.png"),
+ }
+ },
+ boxView,
+ new StackLayout {
+ VerticalOptions = LayoutOptions.Center,
+ Spacing = 0,
+ Children = {
+ nameLabel,
+ birthdayLabel
+ }
+ }
+ }
+ }
+ };
+ });
+
+ _oddTemplate = new DataTemplate (() => {
+ // Create views with bindings for displaying each property.
+ Label nameLabel = new Label ();
+ nameLabel.SetBinding (Label.TextProperty, "Name");
+
+ Label birthdayLabel = new Label ();
+ birthdayLabel.SetBinding (Label.TextProperty,
+ new Binding ("Birthday", BindingMode.OneWay,
+ null, null, "Born {0:d}"));
+
+ BoxView boxView = new BoxView ();
+ boxView.SetBinding (BoxView.ColorProperty, "FavoriteColor");
+
+ // Return an assembled ViewCell.
+ return new ViewCell {
+ View = new StackLayout {
+ Padding = new Thickness (0, 5),
+ Orientation = StackOrientation.Horizontal,
+ Children = {
+ new Image {
+ HeightRequest = 40,
+ WidthRequest = 40,
+ Source = new UriImageSource {
+ // CacheValidity = TimeSpan.FromSeconds (10),
+ Uri = new Uri ("https://xamarin.com/content/images/pages/index/xamarin-studio-icon.png"),
+ }
+ },
+
+ new StackLayout {
+ VerticalOptions = LayoutOptions.Center,
+ Spacing = 0,
+ Children = {
+ birthdayLabel,
+ nameLabel,
+ }
+ },
+ boxView,
+ }
+ }
+ };
+ });
+ }
+
+ protected override DataTemplate OnSelectTemplate (object item, BindableObject container)
+ {
+ return ((Person)item).Birthday.Month % 2 == 0 ? _evenTemplate : _oddTemplate;
+ }
+ }
+
+ public ListViewDemoPage()
+ {
+ Label header = new Label
+ {
+ Text = "ListView",
+ Font = Font.BoldSystemFontOfSize(50),
+ HorizontalOptions = LayoutOptions.Center
+ };
+
+ // Define some data.
+ List<Person> people = new List<Person>
+ {
+ new Person("Abigail", new DateTime(1975, 1, 15), Color.Aqua),
+ new Person("Bob", new DateTime(1976, 2, 20), Color.Black),
+ new Person("Cathy", new DateTime(1977, 3, 10), Color.Blue),
+ new Person("David", new DateTime(1978, 4, 25), Color.Fuschia),
+ new Person("Eugenie", new DateTime(1979, 5, 5), Color.Gray),
+ new Person("Freddie", new DateTime(1980, 6, 30), Color.Green),
+ new Person("Greta", new DateTime(1981, 7, 15), Color.Lime),
+ new Person("Harold", new DateTime(1982, 8, 10), Color.Maroon),
+ new Person("Irene", new DateTime(1983, 9, 25), Color.Navy),
+ new Person("Jonathan", new DateTime(1984, 10, 10), Color.Olive),
+ new Person("Kathy", new DateTime(1985, 11, 20), Color.Purple),
+ new Person("Larry", new DateTime(1986, 12, 5), Color.Red),
+ new Person("Monica", new DateTime(1975, 1, 5), Color.Silver),
+ new Person("Nick", new DateTime(1976, 2, 10), Color.Teal),
+ new Person("Olive", new DateTime(1977, 3, 20), Color.White),
+ new Person("Pendleton", new DateTime(1978, 4, 10), Color.Yellow),
+ new Person("Queenie", new DateTime(1979, 5, 15), Color.Aqua),
+ new Person("Rob", new DateTime(1980, 6, 30), Color.Blue),
+ new Person("Sally", new DateTime(1981, 7, 5), Color.Fuschia),
+ new Person("Timothy", new DateTime(1982, 8, 30), Color.Green),
+ new Person("Uma", new DateTime(1983, 9, 10), Color.Lime),
+ new Person("Victor", new DateTime(1984, 10, 20), Color.Maroon),
+ new Person("Wendy", new DateTime(1985, 11, 5), Color.Navy),
+ new Person("Xavier", new DateTime(1986, 12, 30), Color.Olive),
+ new Person("Yvonne", new DateTime(1987, 1, 10), Color.Purple),
+ new Person("Zachary", new DateTime(1988, 2, 5), Color.Red)
+ };
+ List<Person> people2 = new List<Person>
+ {
+ new Person("Abigail", new DateTime(1975, 1, 15), Color.Aqua),
+ new Person("Bob", new DateTime(1976, 2, 20), Color.Black),
+ new Person("Cathy", new DateTime(1977, 3, 10), Color.Blue),
+ new Person("David", new DateTime(1978, 4, 25), Color.Fuschia),
+ new Person("Eugenie", new DateTime(1979, 5, 5), Color.Gray),
+ new Person("Freddie", new DateTime(1980, 6, 30), Color.Green),
+ new Person("Greta", new DateTime(1981, 7, 15), Color.Lime),
+ new Person("Harold", new DateTime(1982, 8, 10), Color.Maroon),
+ new Person("Irene", new DateTime(1983, 9, 25), Color.Navy),
+ new Person("Jonathan", new DateTime(1984, 10, 10), Color.Olive),
+ new Person("Kathy", new DateTime(1985, 11, 20), Color.Purple),
+ new Person("Larry", new DateTime(1986, 12, 5), Color.Red),
+ new Person("Monica", new DateTime(1975, 1, 5), Color.Silver),
+ new Person("Nick", new DateTime(1976, 2, 10), Color.Teal),
+ new Person("Olive", new DateTime(1977, 3, 20), Color.White),
+ new Person("Pendleton", new DateTime(1978, 4, 10), Color.Yellow),
+ new Person("Queenie", new DateTime(1979, 5, 15), Color.Aqua),
+ new Person("Rob", new DateTime(1980, 6, 30), Color.Blue),
+ new Person("Sally", new DateTime(1981, 7, 5), Color.Fuschia),
+ new Person("Timothy", new DateTime(1982, 8, 30), Color.Green),
+ new Person("Uma", new DateTime(1983, 9, 10), Color.Lime),
+ new Person("Victor", new DateTime(1984, 10, 20), Color.Maroon),
+ new Person("Wendy", new DateTime(1985, 11, 5), Color.Navy),
+ new Person("Xavier", new DateTime(1986, 12, 30), Color.Olive),
+ new Person("Yvonne", new DateTime(1987, 1, 10), Color.Purple),
+ new Person("Zachary", new DateTime(1988, 2, 5), Color.Red)
+ };
+
+ // Create the ListView.
+ ListView listView = new ListView (ListViewCachingStrategy.RecycleElement)
+ {
+ // Source of data items.
+ ItemsSource = new List<List<Person>> {people, people2},
+ IsPullToRefreshEnabled = true,
+ IsGroupingEnabled = true,
+
+ // Define template for displaying each item.
+ // (Argument of DataTemplate constructor is called for
+ // each item; it must return a Cell derivative.)
+ ItemTemplate = new MyDataTemplateSelector ()
+ };
+
+ listView.Refreshing += async (sender, e) => {
+ await Task.Delay (5000);
+ listView.IsRefreshing = false;
+ };
+
+ listView.ItemSelected += (sender, args) => {
+ if (listView.SelectedItem == null)
+ return;
+ listView.SelectedItem = null;
+ };
+
+ // Accomodate iPhone status bar.
+ Padding = new Thickness(10, Device.OnPlatform(20, 0, 0), 10, 5);
+
+ // Build the page.
+ Content = new StackLayout
+ {
+ Children =
+ {
+ header,
+ listView
+ }
+ };
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-14 23:26:49 +0000