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using System;
using Xamarin.Forms.CustomAttributes;
using Xamarin.Forms.Internals;
#if UITEST
using Xamarin.UITest;
using NUnit.Framework;
#endif
namespace Xamarin.Forms.Controls
{
[Preserve(AllMembers = true)]
[Issue(IssueTracker.Bugzilla, 38723, "Update Content in Picker's SelectedIndexChanged event causes NullReferenceException", PlatformAffected.iOS)]
public class Bugzilla38723 : TestContentPage // or TestMasterDetailPage, etc ...
{
Picker _datePicker;
Label _dateLabel;
protected override void Init()
{
_datePicker = new Picker
{
//HorizontalOptions = LayoutOptions.FillAndExpand,
VerticalOptions = LayoutOptions.Center,
Title = "Pick a Date",
};
_datePicker.SelectedIndexChanged += DatePickerSelected;
for (var i = 0; i < 7; i++)
{
_datePicker.Items.Add(DateTime.Now.AddDays(i).ToString("dd, MMM, yyyy(dddd)"));
}
var stackLayout = new StackLayout
{
Padding = new Thickness(10, 10)
};
_dateLabel = new Label
{
HorizontalOptions = LayoutOptions.StartAndExpand,
VerticalOptions = LayoutOptions.Center,
Text = "Placeholder"
};
stackLayout.Children.Add(_datePicker);
stackLayout.Children.Add(_dateLabel);
// Update current page's UI would cause NullReferenceException
Content = stackLayout;
}
void DatePickerSelected(object sender, EventArgs args)
{
_dateLabel.Text = args.ToString();
Content = _dateLabel;
}
}
}
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