Xamarin链接器:找不到类型为Cirrious.CrossCore.IoC.MvxPropertyInjector的默认构造函数 [英] Xamarin Linker : Default constructor not found for type Cirrious.CrossCore.IoC.MvxPropertyInjector

问题描述

对于带有HotTuna包中的FirstView的骨架项目，并且将Build链接器行为设置为链接所有程序集"，我得到以下错误:

With a skeleton project with FirstView from HotTuna package, and with Build linker behavior set to "Link all assemblies", I get the following error:

System.MissingMethodException:找不到类型为Cirrious.CrossCore.IoC.MvxPropertyInjector的默认构造函数

System.MissingMethodException: Default constructor not found for type Cirrious.CrossCore.IoC.MvxPropertyInjector

对所有MvvmCross使用nuGet软件包v3.1.1(4个软件包)

Using nuGet package v3.1.1 for all MvvmCross (4 packages)

LinkerPleaseInclude文件确实包含该行 [MonoTouch.Foundation.Preserve(AllMembers = true)]

LinkerPleaseInclude file does have the line [MonoTouch.Foundation.Preserve(AllMembers = true)]

使用最新的稳定版本:

在PC上: Xamarin for VS 1.12.278 Xamarin.iOS 1.12.278

On PC: Xamarin for VS 1.12.278 Xamarin.iOS 1.12.278

Mac: Xamarin.iOS 7.2.2.2

Mac: Xamarin.iOS 7.2.2.2

当然，仅具有SDK的链接器行为，它运行良好.有任何建议吗?

Ofcourse with Linker behaviour of SDK only, it runs fine. Any suggestions anyone?

推荐答案

已解决；因此，在基础项目中，按以下顺序连续出现三个错误:

Solved; So, with the basic project, there were three consecutive errors in the following order:

System.MissingMethodException: Default constructor not found for type Cirrious.CrossCore.IoC.MvxPropertyInjector

• 可以通过--linkskip = Cirrious.Core(丑陋)解决，也可以通过在LinkerPleaseInclude.cs中包含以下内容来解决

  • can be resolved either by --linkskip=Cirrious.Core (ugly), or by including the following in LinkerPleaseInclude.cs

    public void Include(MvxPropertyInjector injector){
        injector = new MvxPropertyInjector ();
    } 
    

  下一个错误是:

      Cirrious.CrossCore.Exceptions.MvxException: Failed to construct and initialize ViewModel for type {0} from locator MvxDefaultViewModelLocator - check MvxTrace for more information
  

  这很难.简单的解决方法当然是执行--linkskip = portableLibrary或在某处创建ViewModel实例(也许在LinkerPleaseInclude.cs中)；在我的情况下，至少使用第二种方法的问题是，我的大多数VM都没有参数较少的构造函数，显然在这种情况下使用IOC并没有帮助.

  This one is difficult; Simple fix is to ofcourse to do a --linkskip=portableLibrary, or to crate an instance of the ViewModel somewhere (perhaps in LinkerPleaseInclude.cs); problem with the second approach at-least in my case is, most of my VM doesn't have a parameter less constructor, and obviously using IOC in this case wouldn't help.

  最终错误:

  System.ArgumentNullException: missing source event info in MvxWeakEventSubscription
  Parameter name: sourceEventInfo
  

  使用--linkskip = System(难看)，或将以下内容添加到LinkerPleaseInclude.cs

  Either use --linkskip=System (ugly), or add the following to LinkerPleaseInclude.cs

      public void Include(INotifyPropertyChanged changed)
      {
          changed.PropertyChanged += (sender, e) =>  {
              var test = e.PropertyName;
          };
      }
  

  这足以让我的基本项目与LinkAllAssemblies，使用LLVM优化器和使用SGen收集器一起运行.

  This was enough for my basic project to run with LinkAllAssemblies, Using LLVM optimizer, and Use SGen collector.

  希望这会帮助任何寻求解决方案的人.

  Hope this will help anyone looking for a solution.

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