How to resolve an app crash while setting "LinkAll" for Linker Behavior in Xamarin.iOS?

In this article, you can see how to resolve the "System.Reflection.MemberInfo.Invoke" using the "Link All Assemblies".

While setting the Link SDK Assembly only and Link All options in Android and iOS platforms, your code may also be removed if there is no static references.

The linker will sometimes remove your code as per the following category.

• You might have coded that you call dynamically via System.Reflection.MemberInfo.Invoke.
• If you instantiate types dynamically, you may want to preserve the default constructor of your types.
• If you use XML serialization, you may want to preserve the properties of your types.

If you have used custom classes in your application, you need to add the following attribute to preserve the class members from linking.

 
     [Preserve(AllMembers = true)]
 

Example code

 
   [Preserve(AllMembers = true)] 
     Public class Model
     {
       //do stuffs
     }
 
   [Preserve(AllMembers = true)] 
     Public class ViewModel
     {
       //do stuffs
     }
 

Refer the following links to know more details about the usage of preserve attribute:

https://docs.microsoft.com/en-gb/xamarin/ios/deploy-test/linker?tabs=macos#link-all-assemblies

https://docs.microsoft.com/en-gb/xamarin/android/deploy-test/linker#linker-behavior

Conclusion

I hope you enjoyed learning about how to resolve app crash when you set the "LinkAll" in the Linker Behavior in Xamarin.iOS.

You can refer to our Xamarin iOS feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our Xamarin iOS example to understand how to create and manipulate data.

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