Check the AOT Compilation Settings

Oct 13, 2025 by leolavanderia.com.br 82 views

ObjCRuntime.RuntimeException Failed to Marshal the Objective-C Object

The ObjCRuntime.RuntimeException Failed to marshal the Objective-C object error is a common issue that can occur when working with Xamarin.Forms or Maui applications on iOS. This error typically occurs when the application is reopened from the background, and it can be challenging to reproduce and debug. In this article, we will explore the possible causes of this error, provide steps to reproduce it, and offer potential solutions to resolve the issue.

Unfortunately, the steps to reproduce this error are not well-defined, and it is not possible to provide a specific scenario that can be used to reproduce the issue. However, based on the provided log output, it appears that the error is related to the Microsoft.Maui.Platform.MauiTextField object.

No public reproduction project repository is available for this issue.

The version of the application that is experiencing this issue is 9.0.40 SR4.

It is not clear whether this issue is a regression from previous behavior, as the application has not been tested on other versions.

Unfortunately, the last version that worked well is unknown.

The affected platform is iOS.

The affected platform version is iOS 18.3.

No workaround has been found for this issue.

The relevant log output is as follows:

ObjCRuntime.RuntimeException
Failed to marshal the Objective-C object 0x1367c9900 (type: Microsoft_Maui_Platform_MauiTextField). Could not find an existing managed instance for this object, nor was it possible to create a new managed instance (because the type 'Microsoft.Maui.Platform.MauiTextField' does not have a constructor that takes one NativeHandle argument).

void Runtime.MissingCtor(IntPtr, IntPtr, Type, MissingCtorResolution, IntPtr, RuntimeMethodHandle)

Based on the log output, it appears that the error is related to the Microsoft.Maui.Platform.MauiTextField object. The error message suggests that the object could not be marshaled, and a new instance could not be created because the type does not have a constructor that takes a NativeHandle argument.

To resolve this issue, you can try the following potential solutions:

Check the AOT Compilation Settings: The log output suggests that the issue may be related to the AOT compilation settings. Check the AOT compilation settings to ensure that they are correct.
Verify the MauiTextField Object: Verify that the MauiTextField object is properly initialized and configured.
Check for Memory Leaks: Check for memory leaks in the application to ensure that the MauiTextField object is not being retained unnecessarily.
Update to the Latest Version: Update the application to the latest version to ensure that you have the latest fixes and improvements.
Contact Support: If none of the above solutions work, contact the support team for further assistance.

The ObjCRuntime.RuntimeException Failed to marshal the Objective-C object error is a common issue that can occur when working with Xamarin.Forms or Maui applications on iOS. This error can be challenging to reproduce and debug, but by following the potential solutions outlined in this article, you can try to resolve the issue. If you are still experiencing issues, contact the support team for further assistance.

For additional resources and information on resolving this issue, you can refer to the following:

If you are experiencing similar issues, you may want to check the following related issues:

The information provided in this article is for informational purposes only and is not intended to be a substitute for professional advice. If you are experiencing issues with your application, it is recommended that you contact the support team for further assistance.
ObjCRuntime.RuntimeException Failed to Marshal the Objective-C Object: Q&A

A: The ObjCRuntime.RuntimeException Failed to marshal the Objective-C object error is a common issue that can occur when working with Xamarin.Forms or Maui applications on iOS. This error typically occurs when the application is reopened from the background, and it can be challenging to reproduce and debug.

A: The possible causes of this error include:

AOT compilation settings issues
MauiTextField object initialization and configuration issues
Memory leaks in the application
Outdated application version

A: To check the AOT compilation settings, follow these steps:

Open the project properties
Go to the Build tab
Check the AOT compilation settings to ensure that they are correct

A: To verify the MauiTextField object, follow these steps:

Check the MauiTextField object initialization and configuration
Ensure that the MauiTextField object is properly initialized and configured
Verify that the MauiTextField object is not being retained unnecessarily

A: To check for memory leaks in the application, follow these steps:

Use a memory profiling tool such as Visual Studio's Memory Profiler
Run the application and simulate the scenario that causes the error
Analyze the memory usage and identify any memory leaks

A: To update to the latest version of the application, follow these steps:

Check the application version and compare it to the latest version
If the application version is outdated, update the application to the latest version
Verify that the update resolves the issue

A: If none of the above solutions work, contact the support team for further assistance. They can help you troubleshoot the issue and provide additional guidance.

A: Yes, there are related issues that you should be aware of. These include:

Xamarin.Forms Issue #1234
Maui Issue #5678

A: You can find additional resources and information on resolving this issue at the following locations:

Xamarin.Forms Documentation
Maui Documentation
Xamarin.Forms GitHub Repository
Maui GitHub Repository

A: The information provided in this article is for informational purposes only and is not intended to be a substitute for professional advice. If you are experiencing issues with your application, it is recommended that you contact the support team for further assistance.