在Xamarin.Forms中使用StructureMap

Question

I am developping a cross-platform application based on Xamarin Forms. In my application, I want to use StructureMap for IoC.

I made a sample application. As soon as I add StructureMap package (4.6.1), I get an error on deploy :

Synchronizing files... Building and running... Built with 1 messages. (1,1): error: Failed to load assembly from stream: System.AggregateException: One or more errors occurred. ---> System.AggregateException: One or more errors occurred. ---> System.IO.DirectoryNotFoundException: Could not find a part of the path "/data/user/0/com.xamarin.live/files/External/.nuget/packages/system.runtime.loader/4.3.0/ref/netstandard1.5/System.Runtime.Loader.dll". at System.IO.FileStream..ctor (System.String path, System.IO.FileMode mode, System.IO.FileAccess access, System.IO.FileShare share, System.Int32 bufferSize, System.Boolean anonymous, System.IO.FileOptions options) [0x0017d] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 at System.IO.FileStream..ctor (System.String path, System.IO.FileMode mode, System.IO.FileAccess access, System.IO.FileShare share) [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 at (wrapper remoting-invoke-with-check) System.IO.FileStream:.ctor (string,System.IO.FileMode,System.IO.FileAccess,System.IO.FileShare)
at System.IO.File.OpenRead (System.String path) [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 at .$LocalFileSystem+Upsight-IFileSystem-OpenReadAsync@49-1.Invoke () [0x00012] in <5a7d391011b47c3aa745038310397d5a>:0 at System.Threading.Tasks.Task 1[TResult].InnerInvoke () [0x0000f] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 at System.Threading.Tasks.Task.Execute () [0x00010] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 --- End of inner exception stack trace --- --- End of inner exception stack trace --- ---> (Inner Exception #0) System.AggregateException: One or more errors occurred. ---> System.IO.DirectoryNotFoundException: Could not find a part of the path "/data/user/0/com.xamarin.live/files/External/.nuget/packages/system.runtime.loader/4.3.0/ref/netstandard1.5/System.Runtime.Loader.dll". at System.IO.FileStream..ctor (System.String path, System.IO.FileMode mode, System.IO.FileAccess access, System.IO.FileShare share, System.Int32 bufferSize, System.Boolean anonymous, System.IO.FileOptions options) [0x0017d] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 at System.IO.FileStream..ctor (System.String path, System.IO.FileMode mode, System.IO.FileAccess access, System.IO.FileShare share) [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 at (wrapper remoting-invoke-with-check) System.IO.FileStream:.ctor (string,System.IO.FileMode,System.IO.FileAccess,System.IO.FileShare)
at System.IO.File.OpenRead (System.String path) [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 at <StartupCode$Continuous-Core-Droid>.$LocalFileSystem+Upsight-IFileSystem-OpenReadAsync@49-1.Invoke () [0x00012] in <5a7d391011b47c3aa745038310397d5a>:0 at System.Threading.Tasks.Task 1[TResult].InnerInvoke () [0x0000f] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 at System.Threading.Tasks.Task.Execute () [0x00010] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 --- End of inner exception stack trace --- --- End of inner exception stack trace --- ---> (Inner Exception #0) System.AggregateException: One or more errors occurred. ---> System.IO.DirectoryNotFoundException: Could not find a part of the path "/data/user/0/com.xamarin.live/files/External/.nuget/packages/system.runtime.loader/4.3.0/ref/netstandard1.5/System.Runtime.Loader.dll". at System.IO.FileStream..ctor (System.String path, System.IO.FileMode mode, System.IO.FileAccess access, System.IO.FileShare share, System.Int32 bufferSize, System.Boolean anonymous, System.IO.FileOptions options) [0x0017d] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 at System.IO.FileStream..ctor (System.String path, System.IO.FileMode mode, System.IO.FileAccess access, System.IO.FileShare share) [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 at (wrapper remoting-invoke-with-check) System.IO.FileStream:.ctor (string,System.IO.FileMode,System.IO.FileAccess,System.IO.FileShare)
at System.IO.File.OpenRead (System.String path) [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 at <StartupCode$Continuous-Core-Droid>.$LocalFileSystem+Upsight-IFileSystem-OpenReadAsync@49-1.Invoke () [0x00012] in <5a7d391011b47c3aa745038310397d5a>:0 at System.Threading.Tasks.Task 1[TResult].InnerInvoke () [0x0000f] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 at System.Threading.Tasks.Task.Execute () [0x00010] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 --- End of inner exception stack trace --- --- End of inner exception stack trace --- ---> (Inner Exception #0) System.AggregateException: One or more errors occurred. ---> System.IO.DirectoryNotFoundException: Could not find a part of the path "/data/user/0/com.xamarin.live/files/External/.nuget/packages/system.runtime.loader/4.3.0/ref/netstandard1.5/System.Runtime.Loader.dll". at System.IO.FileStream..ctor (System.String path, System.IO.FileMode mode, System.IO.FileAccess access, System.IO.FileShare share, System.Int32 bufferSize, System.Boolean anonymous, System.IO.FileOptions options) [0x0017d] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 at System.IO.FileStream..ctor (System.String path, System.IO.FileMode mode, System.IO.FileAccess access, System.IO.FileShare share) [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 at (wrapper remoting-invoke-with-check) System.IO.FileStream:.ctor (string,System.IO.FileMode,System.IO.FileAccess,System.IO.FileShare)
at System.IO.File.OpenRead (System.String path) [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 at <StartupCode$Continuous-Core-Droid>.$LocalFileSystem+Upsight-IFileSystem-OpenReadAsync@49-1.Invoke () [0x00012] in <5a7d391011b47c3aa745038310397d5a>:0 at System.Threading.Tasks.Task 1[TResult].InnerInvoke () [0x0000f] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 at System.Threading.Tasks.Task.Execute () [0x00010] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 --- End of inner exception stack trace --- ---> (Inner Exception #0) System.IO.DirectoryNotFoundException: Could not find a part of the path "/data/user/0/com.xamarin.live/files/External/.nuget/packages/system.runtime.loader/4.3.0/ref/netstandard1.5/System.Runtime.Loader.dll". at System.IO.FileStream..ctor (System.String path, System.IO.FileMode mode, System.IO.FileAccess access, System.IO.FileShare share, System.Int32 bufferSize, System.Boolean anonymous, System.IO.FileOptions options) [0x0017d] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 at System.IO.FileStream..ctor (System.String path, System.IO.FileMode mode, System.IO.FileAccess access, System.IO.FileShare share) [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 at (wrapper remoting-invoke-with-check) System.IO.FileStream:.ctor (string,System.IO.FileMode,System.IO.FileAccess,System.IO.FileShare)
at System.IO.File.OpenRead (System.String path) [0x00000] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 at .$LocalFileSystem+Upsight-IFileSystem-OpenReadAsync@49-1.Invoke () [0x00012] in <5a7d391011b47c3aa745038310397d5a>:0 at System.Threading.Tasks.Task`1[TResult].InnerInvoke () [0x0000f] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 at System.Threading.Tasks.Task.Execute () [0x00010] in <896ad1d315ca4ba7b117efb8dacaedcf>:0 <--- <---

Failed to debug your app.

I use Visual Studio 2017 (15.7.1) and Xamarin Forms 3.0.0.482510.

I also have the same type of issue with Entity Framerwork Core SQLite

Have you ever encountered this error ?

Answer 1

I would suggest you don't use StructureMap on Xamarin.Forms as it is unsupported:

StructureMap 4.5+ will not work on Xamarin iOS because it depends on System.Reflection.Emit, which is not available in MonoTouch. StructureMap 4.4 works for at least basic scenarios on that platform. Nobody in the core StructureMap team is currently working with Xamarin mobile runtimes, but we are interested in verifying StructureMap on new platforms if any volunteers are interested in helping us out.

http://structuremap.github.io/get-structuremap/