Hi, I’m András a

I am a seasoned software engineer from Budapest, Hungary with a strong focus on mobile app development using .NET MAUI and Xamarin.Forms. My expertise also extends to website building for my happy customers and other complex system designing. I am passionate about developing well-organized, maintainable software solutions.

I hope we can get to know each other, to make your uniqueness digital, and bring “your ideas on devices”

I write blog to share the knowledge I’ve gained.

You can explore my professional articles in software development

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Troubleshooting Xamarin and .NET MAUI: iOS Deployment Issues after XCode Upgrade

by September 21, 2023

This content has 1 year. Some of the information in this post may be out of date or no longer work. Please, read this page keeping its age in your mind.Are you facing deployment issues with your Xamarin or .NET MAUI iOS app after upgrading XCode? You’re not alone. Many developers encounter the frustrating “/usr/bin/xcrun exited with code 1” error message, coupled with the “actool exited with code 1” and an error about failing to locate a simulator runtime. In this blog post, we’ll delve into this problem and provide you with a solution to get your iOS app deployment back on track. Understanding the Problem After upgrading XCode to a newer version, you may notice that you can’t deploy your Xamarin or .NET MAUI iOS app to physical iOS devices, and the simulator targets are mysteriously missing from the drop-down menu where you select deployment targets. This issue can be perplexing and hinder your development workflow. The error message you encounter typically looks something like this: Resolution To tackle this deployment challenge, you should delve into your XCode configuration and confirm that the iOS platform is both accessible and correctly installed on your development machine. Follow these steps:

MAUI, Xamarin 1

Xamarin.iOS : “Failed to compile the generated registrar code” on Visual Studio for Mac

by September 14, 2022

This content has 2 years. Some of the information in this post may be out of date or no longer work. Please, read this page keeping its age in your mind.If you have recently upgraded your XCode version to 14.0, and installed the XCode command line tools too, you will probably notice some error messages when trying to run your Xamarin.Forms, or iOS application from Visual Studio for Mac. What actually helped me, is this:Navigate to https://developer.apple.com/download/all/ and search for Command Line Tools for Xcode 13.4 and Xcode 13.4. Both downloads are big, the XCode itself around 10GB and the CL Tools are around 1GB, so definitely do not do this on metered connections. Once the downloads are ready, open the XCode.XP file with the Package Archiver, let it extract to downloads, then move it to Applications folder. After that, install CL tools. Follow the installer’s instructions. Boom, it’s solved. Issue reported at: https://github.com/xamarin/xamarin-macios/issues/15954

Xamarin 2

Xamarin.UWP FontImageSource does not get displayed

by July 26, 2022

This content has 2 years. Some of the information in this post may be out of date or no longer work. Please, read this page keeping its age in your mind.You may have noticed that if you give an image a FontImageSource, the image does not display properly on the UWP platform. This is probably because the default value of the FontImageSource Color property is white, and you probably want to draw it white. Check if you are giving an explicit value to the Color property. If not, try it.

Xamarin 1

Forms.RecurrenceToolkit is discontinued

by May 8, 2022

This content has 3 years. Some of the information in this post may be out of date or no longer work. Please, read this page keeping its age in your mind.Just as Xamarin.Forms is changing to a .NET MAUI, banditoth.Forms.RecurrenceToolkit will also undergo a change. As of today, I do not plan to develop any new functionality in the aforementioned package. Some parts of the package will be developed for .NET MAUI compatibility. You will be able to find the new packages in the future with the banditoth.MAUI prefix, which will also be available on GitHub.I would like to thank you for the more than 2700 downloads.Bug fixes will continue to be made, so if someone actually uses this for a live application, in that case no worries. Let’s look at some statistics. The most popular package was MVVM with a total of 623 downloads. This was followed by the Logging package with 459 downloads. The Multilanguage and Converters packages were similarly successful, with around 430 downloads. I will be back soon with MAUI packages 😉

Xamarin 1

Xamarin: Project not selected to build for this solution configuration

by April 17, 2022

This content has 3 years. Some of the information in this post may be out of date or no longer work. Please, read this page keeping its age in your mind.If your Xamarin Android, iOS or UWP application is not starting when you are hitting the Run or F5 button, then probably your Build configurations are misconfigured. This usually happens when you are opening a too old source code. No worries, we will have a solution for it. Solution

Xamarin 0

Xamarin.UWP: Image from embedded resource throws “Operation is not supported on this platform” error

by April 17, 2022

This content has 3 years. Some of the information in this post may be out of date or no longer work. Please, read this page keeping its age in your mind. If you are getting the error “Operation is not supported on this platform” when you are trying to set an ImageResource from file for an image on Xamarin.UWP, then the problem comes from this line of code: The solution: Image as Embadded Ressource shows “operation is not supported on this platform” in UWP and Release (microsoft.com)In a short brief: You need to use the second parameter for FromResource method call. You must pass an assembly in order to success on UWP platform. iOS and Android is not affected with this error.

Xamarin 0

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