MvvmCross 5.2 Xamarin.Android抛出错误 '大会' 找不到

Question

从MvvmCross 5.1升级Xamarin.Android项目到5.2后，代码抛出错误

Error CS0246 The type or namespace name 'Assembly' could not be found (are you missing a using directive or an assembly reference?) 

public class CustomAndroidPresenter : MvxAndroidViewPresenter 
{ 
    public CustomAndroidPresenter(IEnumerable<Assembly> androidViewAssemblies) : base(androidViewAssemblies) 
    { 
    } 

    public override void Show(MvxViewModelRequest request) 
    { 
     if (request != null && request.PresentationValues != null) 
     { 
      if (request.PresentationValues.ContainsKey("MyCustomFlag")) 
      { 
       // Get intent from request and set flags to clear backstack. 
       var intent = base.CreateIntentForRequest(request); 
       intent.AddFlags(ActivityFlags.ClearTask | ActivityFlags.ClearTop | ActivityFlags.NewTask); 
       base.Show(intent); 
       return; 
      } 
     } 
     base.Show(request); 
    } 
} 

Answer 1

没有给定的参数对应于所要求的形式参数“androidViewAssemblies”“CustomAndroidPresenter.CustomAndroidPresenter（IEnumerable的）”

请注意，在你Setup.cs类，你初始化CustomAndroidPresenter为：

var presenter = new CustomAndroidPresenter(); 

但你必须在你的CustomAndroidPresenter类添加一个构造函数：

public CustomAndroidPresenter(IEnumerable<Assembly> androidViewAssemblies) : base(androidViewAssemblies) 
{ 
} 

所以，当你初始化CustomAndroidPresenter，给它的参数：

var presenter = new CustomAndroidPresenter(AndroidViewAssemblies); 

不能转换从 'Android.Content.Intent' 到 'MvvmCross.Core.ViewModels.MvxViewModelRequest'

使用base.ShowIntent(intent)而不是base.Show(intent)。