MvxTimePicker不会绑定到时间跨度

我有一个使用MvvmCross 6.0的android应用程序。我正在尝试将MvxTimePicker绑定到时间跨度。我的布局是:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:local="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">
  <TextView
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      style="@style/TableHeaderTextView"
      android:text="Start Time"/>
  <MvxTimePicker
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:timePickerMode="spinner"
    android:textSize="20dp"
    local:MvxBind="Value StoreOpens" />
  <Button
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:text="Close"
      local:MvxBind="Click CloseCommand" />
</LinearLayout>

我的ViewModel是:

public class StoreOpenDialogViewModel : MvxViewModel<Site, bool>
{

    private readonly IMvxNavigationService _navigationService;

    public StoreOpenDialogViewModel(IMvxNavigationService navigationService)
    {
        _navigationService = navigationService;

        CloseCommand = new MvxAsyncCommand(async () => await _navigationService.Close(this, true));
    }

    public override System.Threading.Tasks.Task Initialize()
    {
        return base.Initialize();
    }

    public override void Prepare(Site parm)
    {
        base.Prepare();
        this.Site = parm;
    }

    public IMvxAsyncCommand CloseCommand { get; private set; }

    private Site _Site;
    public Site Site
    {
        get
        {
            return _Site;
        }
        set
        {
            _Site = value;
            RaisePropertyChanged(() => Site);
            RaisePropertyChanged(() => StoreOpens);
        }
    }


    public TimeSpan StoreOpens
    {
        get
        {
            if (Site == null || Site.Opens == null)
                return new TimeSpan(8, 0, 0);
            else
                return Site.Opens;
        }
        set
        {
            if (Site != null)
            {
                Site.Opens = value;
                RaisePropertyChanged(() => StoreOpens);
            }
        }
    }
}

我的观点是:

[MvxDialogFragmentPresentation]
[Register(nameof(StoreOpenDialogView))]
public class StoreOpenDialogView : MvxDialogFragment<StoreOpenDialogViewModel>
{
    public StoreOpenDialogView()
    {
    }

    protected StoreOpenDialogView(IntPtr javaReference, JniHandleOwnership transfer)
        : base(javaReference, transfer)
    {
    }

    public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
    {
        var ignore = base.OnCreateView(inflater, container, savedInstanceState);

        var view = this.BindingInflate(Resource.Layout.StoreOpenDialogView, null);

        return view;
    }
}

这应该是一个非常普通的实现。地点这是一个时间跨度。打开对话框时,出现以下错误:

[错误](MvxBind)在绑定执行期间发现绑定问题 StoreOpens的值-问题TargetInvocationException:异常 已由调用的目标引发。

此时将显示对话框并显示当前时间。当我尝试更改时间时,我得到:

04-29 21:26:55.562输入/单声道标准输出(20515):java。lang.NoSuchMethodError: 没有非静态方法“Landroid/widget/TimePicker;.getHour()I” mvvmcross。平台。安卓结合视图。MVXLAyoutFlater。n\u onCreateView(本机 方法)04-29 21:26:55.562 I/单标准输出(20515):at mvvmcross。平台。安卓结合视图。MVXLAyoutFlater。n\u onCreateView(本机 方法)

我从另一个仍在运行MvvmCross 5的项目中复制了此内容。x,它正在工作。我不知道我是否错过了一步,或者6.0中是否有什么东西坏了。有人对此有什么想法吗?

谢谢 吉姆