实际情况是，我在MvxViewTypeResolver类中添加了“Fragment”-Case，所以它看起来像这样：
#region Copyright
// <copyright file="MvxViewTypeResolver.cs" company="Cirrious">
// (c) Copyright Cirrious. http://www.cirrious.com
// This source is subject to the Microsoft Public License (Ms-PL)
// Please see license.txt on http://opensource.org/licenses/ms-pl.html
// All other rights reserved.
// </copyright>
//
// Project Lead - Stuart Lodge, Cirrious. http://www.cirrious.com
#endregion
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Android.Views;
using Cirrious.MvvmCross.Binding.Android.Interfaces.Binders;
namespace Cirrious.MvvmCross.Binding.Android.Binders
{
public class MvxViewTypeResolver : IMvxViewTypeResolver
{
private Dictionary<string, Type> _cache = new Dictionary<string, Type>();
public IDictionary<string, string> ViewNamespaceAbbreviations { get; set; }
#region IMvxViewTypeResolver Members
public virtual Type Resolve(string tagName)
{
Type toReturn;
if (_cache.TryGetValue(tagName, out toReturn))
return toReturn;
var unabbreviatedTagName = UnabbreviateTagName(tagName);
var longLowerCaseName = GetLookupName(unabbreviatedTagName);
var viewType = typeof(View);
#warning AppDomain.CurrentDomain.GetAssemblies is only the loaded assemblies - so we might miss controls if not already loaded
var query = from assembly in AppDomain.CurrentDomain.GetAssemblies()
from type in assembly.GetTypes()
where viewType.IsAssignableFrom(type)
where (type.FullName ?? "-").ToLowerInvariant() == longLowerCaseName
select type;
toReturn = query.FirstOrDefault();
_cache[tagName] = toReturn;
return toReturn;
}
private string UnabbreviateTagName(string tagName)
{
var filteredTagName = tagName;
if (ViewNamespaceAbbreviations != null)
{
var split = tagName.Split(new char[] {'.'}, 2, StringSplitOptions.RemoveEmptyEntries);
if (split.Length == 2)
{
var abbreviate = split[0];
string fullName;
if (ViewNamespaceAbbreviations.TryGetValue(abbreviate, out fullName))
{
filteredTagName = fullName + "." + split[1];
}
}
}
return filteredTagName;
}
#endregion
protected string GetLookupName(string tagName)
{
var nameBuilder = new StringBuilder();
switch (tagName)
{
case "View":
case "ViewGroup":
nameBuilder.Append("android.view.");
break;
case "fragment":
nameBuilder.Append("android.app.");
break;
default:
if (!IsFullyQualified(tagName))
nameBuilder.Append("android.widget.");
break;
}
nameBuilder.Append(tagName);
return nameBuilder.ToString().ToLowerInvariant();
}
private static bool IsFullyQualified(string tagName)
{
return tagName.Contains(".");
}
}
}
现在它正在提交正确的longLowerCaseTagName（android.app.fragment），但在查询中它无法解析类型。
我的建议是，在应该解析类型时不加载片段控件。也许还有其他方法可以解决类型？
此外，如果我添加一个自定义类型（Mvx.MyCustomType在 axml 中给出标签）它不会得到解决。MvxBindingAttributes.xml在这种情况下我必须添加一些东西吗？
谢谢您的帮助！