public void ValidateStackLayoutDisabledVirtualizationWithItemsRepeater() { RunOnUIThread.Execute(() => { var repeater = new ItemsRepeater(); var stackLayout = new StackLayout(); stackLayout.DisableVirtualization = true; repeater.Layout = stackLayout; repeater.ItemsSource = Enumerable.Range(0, 10); repeater.ItemTemplate = (DataTemplate)XamlReader.Parse( @"<DataTemplate xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'> <Button Content='{Binding}' Height='100' /> </DataTemplate>"); var scrollViewer = new ScrollViewer() { Content = repeater }; scrollViewer.Height = 100; Content = scrollViewer; Content.UpdateLayout(); for (int i = 0; i < repeater.ItemsSourceView.Count; i++) { var child = repeater.TryGetElement(i) as Button; Verify.IsNotNull(child); } }); }
public void VerifySwitchingLayoutDynamically() { LayoutPanel panel = null; Button button1 = null; Button button2 = null; RunOnUIThread.Execute(() => { Log.Comment("Create LayoutPanel with StackLayout"); panel = new LayoutPanel() { Width = 400, Height = 400 }; var stackLayout = new StackLayout { Orientation = Orientation.Vertical }; panel.Layout = stackLayout; button1 = new Button { Height = 100, Content = "1" }; button2 = new Button { Height = 100, Content = "2" }; panel.Children.Add(button1); panel.Children.Add(button2); Content = panel; Content.UpdateLayout(); Log.Comment("Verify layout for StackLayout:"); Verify.AreEqual(new Rect(0, 0, 400, 100), LayoutInformation.GetLayoutSlot(button1), "Verify LayoutSlot of child 1"); Verify.AreEqual(new Rect(0, 100, 400, 100), LayoutInformation.GetLayoutSlot(button2), "Verify LayoutSlot of child 2"); }); IdleSynchronizer.Wait(); RunOnUIThread.Execute(() => { Log.Comment("Switch LayoutPanel to UniformGridLayout"); UniformGridLayout gridLayout = new UniformGridLayout(); gridLayout.MinItemWidth = 100; gridLayout.MinItemHeight = 100; panel.Layout = gridLayout; Content.UpdateLayout(); Log.Comment("Verify layout for UniformGridLayout:"); Verify.AreEqual(new Rect(0, 0, 100, 100), LayoutInformation.GetLayoutSlot(button1), "Verify LayoutSlot of child 1"); Verify.AreEqual(new Rect(100, 0, 100, 100), LayoutInformation.GetLayoutSlot(button2), "Verify LayoutSlot of child 2"); }); }