Android Spinner 未使用新选择的项目 Xamarin.Android 进行更新

Question

我有一个包含国家列表的微调器。页面加载如下

用户从下拉菜单中选择一个国家。假设我们选择阿尔及利亚

选择阿尔及利亚后，下拉菜单将关闭，但所选国家/地区仍显示为未知

接下来，当我选择另一个国家时，只会显示之前的国家阿尔及利亚。不是新选择的国家/地区。

我的代码

public class SpinnerActivity : Activity
{
    private ArrayAdapter adapter;
    private Spinner spinner;
    protected override void OnCreate(Bundle bundle)
    {
        base.OnCreate(bundle);

        // Set our view from the "Main" layout resource
        SetContentView(Resource.Layout.SpinnerControl);

        spinner = FindViewById<Spinner>(Resource.Id.spinner);
        spinner.ItemSelected += new EventHandler<AdapterView.ItemSelectedEventArgs>(spinner_ItemSelected);

        adapter = ArrayAdapter.CreateFromResource(
            this, Resource.Array.countries_array, Android.Resource.Layout.SimpleSpinnerItem);

        adapter.SetDropDownViewResource(Android.Resource.Layout.SimpleSpinnerDropDownItem);
        adapter.NotifyDataSetChanged();
        spinner.Adapter = adapter;

        spinner.SetSelection(GameSettings.ISettings.CountrySetting);
    }


    private void spinner_ItemSelected(object sender, AdapterView.ItemSelectedEventArgs e)
    {
        Spinner spinner = (Spinner)sender;
        spinner.SetSelection(adapter.GetPosition(e.Position));
        Console.WriteLine("Setting{0}", GameSettings.ISettings.CountrySetting);
        if (e.Position != GameSettings.ISettings.CountrySetting)
        {
            GameSettings.ISettings.CountrySetting = e.Position;
            Options.countryText.ChangeText("Country: " + System.Environment.NewLine + ScoreHelper.GetCountry(GameSettings.ISettings.CountrySetting));
            ScoreBoards.Board.IsInfoUpdated = true;

        }
    }
}

那么，当下拉菜单关闭时，如何立即使用所选项目更新微调器？

Answer 1

显然这个问题只发生在设备模拟器上。在物理设备上调试的时候没有遇到过。