d5697a8867
This makes diagnosing what happens much easier in some cases.
Exhibit A, pre fix:
*** Terminating app due to uncaught exception 'ObjCRuntime.RuntimeException', reason: 'Failed to lookup the required marshalling information.
Additional information:
Selector: conformsToProtocol:
Type: ViewController
Exhibit B, post fix:
*** Terminating app due to uncaught exception 'ObjCRuntime.RuntimeException', reason: 'Failed to lookup the required marshalling information.
Additional information:
Selector: conformsToProtocol:
Type: ViewController
(ObjCRuntime.RuntimeException)
Failed to get the 'this' instance in a method call to templ.ViewController.InvokeConformsToProtocol. (ObjCRuntime.RuntimeException)
at Registrar.DynamicRegistrar.GetMethodDescriptionAndObject(Type type, IntPtr selector, Boolean is_static, IntPtr obj, IntPtr& mthis, IntPtr desc)
at ObjCRuntime.Runtime.GetMethodAndObjectForSelector(IntPtr klass, IntPtr sel, Boolean is_static, IntPtr obj, IntPtr& mthis, IntPtr desc)
at ObjCRuntime.Runtime.get_method_and_object_for_selector(IntPtr cls, IntPtr sel, Boolean is_static, IntPtr obj, IntPtr& mthis, IntPtr desc, IntPtr& exception_gchandle)
Failed to marshal the Objective-C object 0x7f813fd2f470 (type: ViewController). Could not find an existing managed instance for this object, nor was it possible to create a new managed instance (because the type 'templ.ViewController' does not have a constructor that takes one NativeHandle argument). (ObjCRuntime.RuntimeException)
at ObjCRuntime.Runtime.MissingCtor(IntPtr ptr, IntPtr klass, Type type, MissingCtorResolution resolution)
at ObjCRuntime.Runtime.ConstructNSObject[T](IntPtr ptr, Type type, MissingCtorResolution missingCtorResolution)
at ObjCRuntime.Runtime.ConstructNSObject(IntPtr ptr, IntPtr klass, MissingCtorResolution missingCtorResolution)
at ObjCRuntime.Runtime.GetNSObject(IntPtr ptr, MissingCtorResolution missingCtorResolution, Boolean evenInFinalizerQueue)
at Registrar.DynamicRegistrar.GetMethodDescriptionAndObject(Type type, IntPtr selector, Boolean is_static, IntPtr obj, IntPtr& mthis, IntPtr desc)
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| fsharp | ||
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| ISSUE_TEMPLATE.md | ||
| LICENSE | ||
| Make.config | ||
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| NOTICE.txt | ||
| NuGet.config | ||
| README.md | ||
| SECURITY.MD | ||
| Versions-ios.plist.in | ||
| Versions-mac.plist.in | ||
| Xamarin.Mac.sln | ||
| Xamarin.iOS.sln | ||
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| configure | ||
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README.md
Xamarin.iOS & Xamarin.Mac
Welcome!
This module is the main repository for both Xamarin.iOS and Xamarin.Mac.
These SDKs allow us to create native iOS, tvOS, watchOS and macOS applications using the same UI controls we would in Objective-C and Xcode, except with the flexibility and elegance of a modern language (C#), the power of the .NET Base Class Library (BCL), and two first-class IDEs—Visual Studio for Mac and Visual Studio—at our fingertips.
This repository is where we do development for the Xamarin.iOS and Xamarin.Mac SDKs. There are a few ways that you can contribute, for example:
- Submit bugs and feature requests
- Review source code changes
- Submit pull requests to resolve issues and fix bugs
Contributing
If you are interested in fixing issues and contributing directly to the code base, please see the document How to Contribute, which covers the following:
- How to build and run from source
- The development workflow, including debugging and running tests
- Coding Guidelines
- Submitting pull requests
Downloads
The preferred method for installing Xamarin.iOS and Mac is to use the Visual Studio installers (Windows, Mac).
The team also strongly recommends using the latest Xamarin SDK and Xcode whenever possible.
However, we provide links to older Xamarin.iOS and Mac packages for macOS downgrades and build machine configuration.
| Version | Xamarin.iOS | Xamarin.Mac |
|---|---|---|
| d16.11 (Xcode 13.1) | 15.2.0.1 | 8.2.0.1 |
| d16.11 (Xcode 13.0) | 15.0.0.6 | N/A |
| d16.10 | 14.20.0.24 | 7.14.0.27 |
| d16.9 (Xcode 12.5) | 14.16.0.5 | 7.10.0.5 |
| d16.9 | 14.14.2.5 | 7.8.2.5 |
| d16.8 (Xcode 12.4) | 14.10.0.4 | 7.4.0.10 |
| d16.8 (Xcode 12.3) | 14.8.0.3 | 7.2.0.3 |
| d16.8 (Xcode 12.2) | 14.6.0.15 | 7.0.0.15 |
| d16.8 | 14.4.1.3 | 6.22.1.26 |
| d16.7 | 14.2.0.12 | 6.20.2.2 |
| d16.6 | 13.18.2.1 | 6.18.2.1 |
| d16.5 | 13.16.0.13 | 6.16.0.13 |
| d16.4 | 13.10.0.21 | 6.10.0.21 |
| d16.3 | 13.6.0.12 | 6.6.0.12 |
| d16.2 | 12.14.0.114 | 5.14.0.114 |
| d16.1 | 12.10.0.157 | 5.10.0.157 |
| d16.0 | 12.8.0.2 | 5.8.0.0 |
Feedback
- Ask a question on Stack Overflow or the Xamarin Forums
- Request a new feature on GitHub
- Vote on existing feature requests
- Submit bugs to GitHub Issues
- Discuss development and design on Discord
License
Copyright (c) .NET Foundation Contributors. All rights reserved. Licensed under the MIT License.