C# - Xamarin：Objecttype 和 NSObject 之间没有隐式引用转换

如何解决C# - Xamarin：Objecttype 和 NSObject 之间没有隐式引用转换

我遇到了 Xamarin.iOS Objective-C 绑定问题。我正在使用 Objective Sharpie 3.5.41 来生成 ApiDeFinitions 和 StructsAndEnums。我正在生成具有自定义意图类型的意图协议定义。

问题在于 IntentAppliance 被输入到 INObject。

    [Watch (5,0),NoTV,Mac (10,16),iOS (12,0)]
    [BaseType (typeof(INObject))]
    interface IntentAppliance
    {
        // @property (readwrite,copy,nonatomic) Nsstring * _Nullable id __attribute__((availability(ios,introduced=13.0))) __attribute__((availability(macos,introduced=10.16))) __attribute__((availability(watchos,introduced=6.0)));
        //[Watch (6,iOS (13,0)]
        [NullAllowed,Export ("id")]
        string Id { get; set; }
    }

对于意图协议定义和自定义意图，有必要实现 provideApplianceOptionsCollectionForApplianceSelection:withCompletion:。转换后的方法看起来像

        [Abstract]
        [Export ("provideApplianceOptionsCollectionForApplianceSelection:withCompletion:")]
        void ProvideApplianceOptionsCollectionForApplianceSelection (ApplianceSelectionIntent intent,Action<INObjectCollection<IntentAppliance>,NSError> completion);

错误信息是：ApiDeFinitions.cs(150,150): Error CS0311: The type 'IntentBinding.IntentAppliance' cannot be used as type parameter 'ObjectType' in the generic type or method 'INObjectCollection<ObjectType>'. There is no implicit reference conversion from 'IntentBinding.IntentAppliance' to 'Foundation.NSObject'.

有没有人解决这个问题？