Question

我有以下代码在PCL中运行正常，其中TargetFrameworkVersion为4.0，TargetFrameworkProfile为Profile104。

 public class AppCapabilitiesRepository : IAppCapabilityRepository
    {
        private readonly Type _typeOfAppCapability = typeof (IAppCapability);

        public IList<IAppCapability> GetCapabilities()
        {
            var capabilities = Assembly.GetExecutingAssembly().GetTypes().Where(IsAppCapability).ToArray();
            var viewModels = capabilities.Select(capability => ((IAppCapability)Activator.CreateInstance(capability)))
                .Where(c => c.IsActive)
                .OrderBy(c => c.Popularity).ToList();
            return viewModels;
        }

        private bool IsAppCapability(Type type)
        {
            return _typeOfAppCapability.IsAssignableFrom(type) && !type.IsAbstract && !type.IsInterface;
        }
    }

将项目升级到4.5的TargetFrameworkVersion和Profile259的TargetFrameworkProfile后，无法再找到这些反射API：

Assembly.GetExecutingAssembly，Type.IsAbstract和Type.IsInterface。

如果这很重要，这个解决方案也使用MvvmCross 3.5.1。

我现在该怎么办？

Answer 1

感谢Stuart提示。我需要做的API更改如下：

Assembly.GetExecutingAssembly => this.GetType().GetTypeInfo().Assembly
Type.IsAbstract => TypeInfo.IsAbstract where TypeInfo.GetTypeInfo()
Type.IsInterface => TypeInfo.IsInterface where TypeInfo = Type.GetTypeInfo()

修改后的代码如下：

  public class AppCapabilitiesRepository : IAppCapabilityRepository
    {
        private readonly Type _typeOfAppCapability = typeof (IAppCapability);

        public IList<IAppCapability> GetCapabilities()
        {
            var capabilities =  GetType().GetTypeInfo().Assembly.GetTypes().Where(IsAppCapability).ToArray();
            var viewModels = capabilities.Select(capability => ((IAppCapability)Activator.CreateInstance(capability)))
                .Where(c => c.IsActive)
                .OrderBy(c => c.Popularity).ToList();
            return viewModels;
        }

        private bool IsAppCapability(Type type)
        {
            var typeInfo = type.GetTypeInfo();
            return _typeOfAppCapability.IsAssignableFrom(type) && !typeInfo.IsAbstract && !typeInfo.IsInterface;
        }
    }

有些法律在这里被违反，但是......

希望这有助于其他人。

可移植类库Profile259中缺少Reflection API

1 个答案: