在xamarin android中具有字母索引的RecyclerView

Question

谁能帮我解决这个问题我想在 Xamarin android 中使用 Recyclerview 实现字母索引。

Answer 1

您必须先对我们的列表进行排序

示例：

 List<Email> emails = new List<Email>();
    emails.Add(new Email { Address="Test1@contoso.com" , CreateTime=new DateTime(2016, 7, 14, 3, 15, 0) });
    emails.Add(new Email { Address = "Test2@contoso.com", CreateTime = new DateTime(2013, 8, 11, 3, 15, 0) });
    emails.Add(new Email { Address = "Test3@contoso.com", CreateTime = new DateTime(2017, 6, 13, 3, 15, 0) });
    emails.Add(new Email { Address = "Test4@contoso.com", CreateTime = new DateTime(2011, 8, 14, 3, 15, 0) });
    emails.Add(new Email { Address = "Test5@contoso.com", CreateTime = new DateTime(2013, 9, 16, 3, 15, 0) });
    emails.Add(new Email { Address = "Test6@contoso.com", CreateTime = new DateTime(2015, 1, 15, 3, 15, 0) });

    emails.Sort((x, y) => DateTime.Compare(x.CreateTime, y.CreateTime));

    var recyclerView = FindViewById<RecyclerView>(Resource.Id.recyclerView);
    RecyclerViewAdapter adapter = new RecyclerViewAdapter(emails, this);
    recyclerView.SetLayoutManager(new LinearLayoutManager(this));
    recyclerView.SetAdapter(adapter);