故事板不会在 Visual Studio (Xamarin) 中打开。设计器无法初始化答案

【问题标题】：Storyboard won't open in Visual Studio (Xamarin). The designer could not be initialized故事板不会在 Visual Studio (Xamarin) 中打开。设计器无法初始化
【发布时间】：2022-03-16 16:51:22
【问题描述】：

我们使用 Visual Studio (Xamarin) 为 Apple 开发应用程序。由于我安装了最新的更新，故事板不会在 Visual Studio 中打开。

我尝试降级到最新版本，但这似乎不起作用。已重建、重新启动和卸载项目。

错误信息：

MonoTouch.Design.Client.CouldNotInitializeRendererException: Exception of type 'MonoTouch.Design.Client.CouldNotInitializeRendererException' was thrown.
   at MonoTouch.Design.Client.ServerProcessConnection.SendRequest(CommandRequest req, Boolean throwIfNotRunning) in E:\A\_work\1898\s\Xamarin.Designer.iOS\MonoTouch.Design.Client\Connection\ServerProcessConnection.cs:line 232
   at MonoTouch.Design.Client.ServerProcessConnection.SendRequest[TResponse](CommandRequest req, Boolean throwIfNotRunning) in E:\A\_work\1898\s\Xamarin.Designer.iOS\MonoTouch.Design.Client\Connection\ServerProcessConnection.cs:line 243
   at MonoTouch.Design.Client.ServerProcessConnection.CreateSession() in E:\A\_work\1898\s\Xamarin.Designer.iOS\MonoTouch.Design.Client\Connection\ServerProcessConnection.cs:line 111
   at MonoTouch.Design.Client.ServerProcessConnection.<CreateSessionAsync>b__28_0() in E:\A\_work\1898\s\Xamarin.Designer.iOS\MonoTouch.Design.Client\Connection\ServerProcessConnection.cs:line 116
   at System.Threading.Tasks.Task`1.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()
...
...
...
[2019-10-11 15:43:30.7] INFO: [2019-10-11 15:43:30.6] INFO: Waiting for renderer to start... 300
[2019-10-11 15:43:30.9] INFO: [2019-10-11 15:43:30.9] ERROR: Could not initialize renderer
[2019-10-11 15:43:30.9] INFO: MonoTouch.Design.Client.CouldNotInitializeRendererException: The renderer never started, bailing out... ---> MonoTouch.Design.Client.RetryConnectionException ---> System.Net.Sockets.SocketException: Connection refused
[2019-10-11 15:43:30.9] INFO:   at System.Net.Sockets.Socket.Connect (System.Net.EndPoint remoteEP) [0x000b6] in <118907f5eb5f4e538f3e3bdd8361378f>:0 
[2019-10-11 15:43:30.9] INFO:   at Mono.Unix.UnixClient.Connect (Mono.Unix.UnixEndPoint remoteEndPoint) [0x00006] in <47e71035f6774c5fa65560f4ab0cc60e>:0 
[2019-10-11 15:43:30.9] INFO:   at (wrapper remoting-invoke-with-check) Mono.Unix.UnixClient.Connect(Mono.Unix.UnixEndPoint)
[2019-10-11 15:43:30.9] INFO:   at MonoTouch.Design.Client.Mac.MacServerProcessConnection.SendRequestImpl (MonoTouch.Design.CommandRequest request) [0x0000d] in <75e4a400d63a46619c2379952ad9ffcc>:0 
[2019-10-11 15:43:30.9] INFO:    --- End of inner exception stack trace ---
[2019-10-11 15:43:30.9] INFO:   at MonoTouch.Design.Client.Mac.MacServerProcessConnection.SendRequestImpl (MonoTouch.Design.CommandRequest request) [0x0001b] in <75e4a400d63a46619c2379952ad9ffcc>:0 
[2019-10-11 15:43:30.9] INFO:   at MonoTouch.Design.Client.ServerProcessConnection.SendRequestCore (MonoTouch.Design.CommandRequest request, System.Boolean throwIfNotRunning) [0x00050] in <3fb2608a4c644b7faeb25f7a26ae637f>:0 
[2019-10-11 15:43:30.9] INFO:    --- End of inner exception stack trace ---
[2019-10-11 15:43:30.9] INFO:   at MonoTouch.Design.Client.ServerProcessConnection.SendRequestCore (MonoTouch.Design.CommandRequest request, System.Boolean throwIfNotRunning) [0x000c2] in <3fb2608a4c644b7faeb25f7a26ae637f>:0 
[2019-10-11 15:43:30.9] INFO:   at MonoTouch.Design.Client.ServerProcessConnection.SendRequest (MonoTouch.Design.CommandRequest req, System.Boolean throwIfNotRunning) [0x00000] in <3fb2608a4c644b7faeb25f7a26ae637f>:0 
[2019-10-11 15:43:30.9] INFO:   at CSProxyHost.MainClass.HandleMessage (MonoTouch.Design.CommandRequest message) [0x0015b] in <22267ef404cb4303b2debccd373e2a94>:0 
[2019-10-11 15:43:30.9] INFO: Reloading: Server rendering completed in 61335ms
[2019-10-11 15:43:30.9] ERROR: EnsureSession (counter 1): System.AggregateException: One or more errors occurred. ---> MonoTouch.Design.Client.CouldNotInitializeRendererException: Exception of type 'MonoTouch.Design.Client.CouldNotInitializeRendererException' was thrown.
   at MonoTouch.Design.Client.ServerProcessConnection.SendRequest(CommandRequest req, Boolean throwIfNotRunning) in E:\A\_work\1898\s\Xamarin.Designer.iOS\MonoTouch.Design.Client\Connection\ServerProcessConnection.cs:line 232
   at MonoTouch.Design.Client.ServerProcessConnection.SendRequest[TResponse](CommandRequest req, Boolean throwIfNotRunning) in E:\A\_work\1898\s\Xamarin.Designer.iOS\MonoTouch.Design.Client\Connection\ServerProcessConnection.cs:line 243
   at MonoTouch.Design.Client.ServerProcessConnection.CreateSession() in E:\A\_work\1898\s\Xamarin.Designer.iOS\MonoTouch.Design.Client\Connection\ServerProcessConnection.cs:line 111
   at MonoTouch.Design.Client.ServerProcessConnection.<CreateSessionAsync>b__28_0() in E:\A\_work\1898\s\Xamarin.Designer.iOS\MonoTouch.Design.Client\Connection\ServerProcessConnection.cs:line 116
   at System.Threading.Tasks.Task`1.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()
   --- End of inner exception stack trace ---
---> (Inner Exception #0) MonoTouch.Design.Client.CouldNotInitializeRendererException: Exception of type 'MonoTouch.Design.Client.CouldNotInitializeRendererException' was thrown.
   at MonoTouch.Design.Client.ServerProcessConnection.SendRequest(CommandRequest req, Boolean throwIfNotRunning) in E:\A\_work\1898\s\Xamarin.Designer.iOS\MonoTouch.Design.Client\Connection\ServerProcessConnection.cs:line 232
   at MonoTouch.Design.Client.ServerProcessConnection.SendRequest[TResponse](CommandRequest req, Boolean throwIfNotRunning) in E:\A\_work\1898\s\Xamarin.Designer.iOS\MonoTouch.Design.Client\Connection\ServerProcessConnection.cs:line 243
   at MonoTouch.Design.Client.ServerProcessConnection.CreateSession() in E:\A\_work\1898\s\Xamarin.Designer.iOS\MonoTouch.Design.Client\Connection\ServerProcessConnection.cs:line 111
   at MonoTouch.Design.Client.ServerProcessConnection.<CreateSessionAsync>b__28_0() in E:\A\_work\1898\s\Xamarin.Designer.iOS\MonoTouch.Design.Client\Connection\ServerProcessConnection.cs:line 116
   at System.Threading.Tasks.Task`1.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()<---

【问题讨论】：

如果您在 macOS 上，我建议您使用 Xcode Interface Builder 而不是 Visual Studio，您可以通过右键单击故事板文件打开它，然后“打开方式”和“Xcode 界面”建设者”
@roachoverflow 我在 Windows 上使用 Vs。这个问题有时会发生。 VS 2019 与最新版本 16.3 一起使用。

标签： ios visual-studio xamarin xamarin.ios

【解决方案1】：

Report the bug 因为情节提要应使用 Visual Studio 打开。同时，您可以右键单击 Visual Studio For Mac 中的文件并使用“Xcode Interface Builder”打开它。

【讨论】：

解决了。谢谢。没有考虑到这一点。此外，我将所有内容（Windows 上的 VS、Mac 上的 VS 和 Mac 上的 xCode）都更新到了最新版本，现在它又可以工作了。不知道第一次出了什么问题。

【解决方案2】：

当我尝试在 Visual Studio 2019 版本 16.0.3 中打开 Main.Storyboard 时遇到了类似的问题。我对此进行了研究，因为我已经购买了一台二手 Mac Book Pro。

在寻找解决方案的搜索中，我看到一篇帖子说您至少需要 Visual Studio 2019 版本 16.3 及更高版本。我去了 Visual Studio 2019 中的 Help About，我现在已经安装了 Visual Studio 19 版本的更新：16.5.4。

我的 Mac 使用的是 Catalina 10.15.3，因此我还将我的 Mac Book Pro 更新到了 Catalina 10.15.4（Apple 图标并选择关于本机以更新 Catalina）。我在 Mac 上安装的 XCode 说它只支持在 macOS Catalina 10.15.4 上开发应用程序，因此升级了。

Visual Studio 2019 版本更新超过 8GB，而 mac 更新仅略超过 3GB。所以就像你说的那样，将所有内容更新到最新/最有效！

有了这些更新，大家都很开心。

【讨论】：

@Dharman 的编辑很不错，请保持不变。 Stack Overflow 上的材料可以被认为更接近 Wikipedia，而不像聊天室。保持材料永恒、简洁和中性通常是这里的首选。