Xamarin链接器：找不到类型为Cirrious.CrossCore.IoC.MvxPropertyInjector的默认构造函数(Xamarin Linker : Default construc

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

使用HotTuna软件包中的FirstView构建骨架项目，并将Build链接器行为设置为“链接所有程序集”时，出现以下错误：

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

对所有MvvmCross使用nuGet软件包v3.1.1（4个软件包）

LinkerPleaseInclude文件确实有[MonoTouch.Foundation.Preserve（AllMembers = true）]行

使用最新的稳定版本：

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

Mac：Xamarin.iOS 7.2.2.2

只有SDK的链接器行为，它运行良好。 有人建议吗？

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

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

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

Using latest stable build:

On PC: Xamarin for VS 1.12.278 Xamarin.iOS 1.12.278

Mac: Xamarin.iOS 7.2.2.2

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

最满意答案

解决了; 因此，对于基本项目，按以下顺序连续出现三个错误：

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

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

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

这个很难; 简单的解决办法是做一个--linkskip = portableLibrary，或者在某处（或许在LinkerPleaseInclude.cs中）创建一个ViewModel的实例; 至少在我的情况下，第二种方法的问题是，我的大多数VM没有参数较少的构造函数，显然在这种情况下使用IOC无济于事。

最终错误：

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

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

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

这足以让我的基本项目能够运行LinkAllAssemblies，使用LLVM优化器和使用SGen收集器。

希望这会帮助任何寻找解决方案的人。

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

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 (); }

Next error is:

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

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.

Final Error:

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

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; }; }

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

Hope this will help anyone looking for a solution.