我正在嘗試設置一個自定義可擴展列表視圖適配器（繼承自 BaseExpandableListAdapter）以用作 Xamarin.Android 中 ExpandableListView 小部件的適配器。我正在使用 Visual Studio 2019 和 Xamarin.Android v28.0.0.1根據這些網站的示例，我得到了一些我認為應該有效的東西。http://www.appliedcodelog.com/2016/06/expandablelistview-in-xamarin-android.html https://gist.github.com/lprichar/904ade6f1aaf96d172436bed3fb24d9b https://www.codeproject.com/Articles/677206/MonoAndroid-Writing-ExpandableListView-amdanswers_fragment.axml<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="match_parent"    android:layout_height="match_parent">    <ExpandableListView        android:minWidth="25px"        android:minHeight="25px"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:id="@+id/answers" /></LinearLayout>片段.cs    public class AnswersFragment : Fragment    {        private readonly Dictionary<string, bool> answers;        public AnswersFragment(Dictionary<string, bool> answers)        {            this.answers = answers;        }        // Display list of the questions and where answers matched.        public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)        {            View view = inflater.Inflate(Resource.Layout.answers_fragment, container, false);            view.FindViewById<ExpandableListView>(Resource.Id.answers).Adapter = new AnswersListViewAdapter(Context, answers); // This is where the implicit type conversion error occurs            return view;        }    }