Question

尝试使用Xamarin.Android + ReactiveUI调用WireUpControls（）时出现以下异常。

System.TypeInitializationException：类型初始值设定项＆＃39; ReactiveUI.ControlFetcherMixin＆＃39;抛出异常

我已经检查过以下内容，但我仍然得到例外。

https://reactiveui.net/docs/handbook/data-binding/xamarin-android/wire-up-controls
通过更改解决策略。

我在布局中只有一个ListView。

主要活动：

protected override void OnCreate(Bundle savedInstanceState)
        {
            base.OnCreate(savedInstanceState);

            SetContentView(Resource.Layout.Main);
            this.WireUpControls(ControlFetcherMixin.ResolveStrategy.ExplicitOptIn);
            SetupUserInterface();

            this.OneWayBind(ViewModel, x => x.OutletListing, x => x.OutletListItems).DisposeWith(SubscriptionDisposables);

        }

更新找到内部异常

+       ex  {System.TypeInitializationException: The type initializer for 'ReactiveUI.ControlFetcherMixin' threw an exception. ---> System.InvalidOperationException: You're using multiple resource ID's with the same name but with different casings which isn't allowed for WireUpControls: { Image = image }, { Text = text }, { Text2 = text2 } ---> System.ArgumentException: An item with the same key has already been added. Key: image
  at System.Collections.Generic.Dictionary`2[TKey,TValue].TryInsert (TKey key, TValue value, System.Collections.Generic.InsertionBehavior behavior) [0x000bb] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Collections.Generic.Dictionary`2[TKey,TValue].Add (TKey key, TValue value) [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 
  at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] keySelector, System.Func`2[T,TResult] elementSelector, System.Collections.Generic.IEqualityComparer`1[T] comparer) [0x0009e] in <b5bd9d990a0b4733885e90ca5ec6c0fb>:0 
  at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] keySelector, System.Func`2[T,TResult] elementSelector) [0x00000] in <b5bd9d990a0b4733885e90ca5ec6c0fb>:0 
  at ReactiveUI.ControlFetcherMixin..cctor () [0x00048] in C:\projects\reactiveui\src\ReactiveUI\Android\ControlFetcherMixin.cs:34 
   --- End of inner exception stack trace ---
  at ReactiveUI.ControlFetcherMixin..cctor () [0x0010c] in C:\projects\reactiveui\src\ReactiveUI\Android\ControlFetcherMixin.cs:45 
   --- End of inner exception stack trace ---

Answer 1

您的实际异常可能在InnerException中，请特别注意文档中的这段文字：

由于字典是在名称的小写变体上编制索引，因此在布局中使用不同的外壳不能使用相同的资源名称两次。 Android在生成资源ID时区分大小写，因此将其映射到单个资源ID以与WireUpControl一起使用是不可能的。

您可能正在使用多个相似但只有外壳不同的资源名称。

Xamarin.Android System.TypeInitializationException：＆＃39; ReactiveUI.ControlFetcherMixin＆＃39;的类型初始值设定项。抛出一个例外

1 个答案: