58 строки
1.5 KiB
C#
58 строки
1.5 KiB
C#
using System;
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using Xamarin.Forms.CustomAttributes;
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using Xamarin.Forms.Internals;
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using System.Linq;
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using System.Threading.Tasks;
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namespace Xamarin.Forms.Controls
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{
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[Preserve(AllMembers = true)]
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[Issue(IssueTracker.Bugzilla, 33561, "ListView Pull-to-Refresh ActivityIndicator animation stuck when navigating away and then back again")]
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public class Bugzilla33561 : TestTabbedPage
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{
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public class ListPage : ContentPage
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{
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ListView _listView;
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bool _isRefreshing;
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public ListPage()
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{
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var template = new DataTemplate(typeof(TextCell));
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template.SetBinding(TextCell.TextProperty, ".");
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_listView = new ListView()
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{
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IsPullToRefreshEnabled = true,
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ItemsSource = Enumerable.Range(0, 10).Select(no => $"FAIL {no}"),
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ItemTemplate = template,
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IsRefreshing = true
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};
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_listView.Refreshing += async (object sender, EventArgs e) =>
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{
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if (_isRefreshing)
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return;
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_isRefreshing = true;
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await Task.Delay(10000);
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_listView.EndRefresh();
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_listView.ItemsSource = Enumerable.Range(0, 10).Select(no => $"SUCCESS {no}");
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_isRefreshing = false;
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};
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Content = _listView;
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Device.StartTimer(TimeSpan.FromSeconds(5), () => { _listView.IsRefreshing = false; return false; });
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}
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}
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protected override void Init()
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{
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Children.Add(new NavigationPage(new ListPage()) { Title = "page 1" });
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Children.Add(new ContentPage() { Title = "page 2" });
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Children.Add(new ContentPage() { Title = "page 3" });
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}
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}
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}
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