Unable to install Telerik UI for Xamarin

[Praveen]

Hello! Team,

I have downloaded the Progress COntrol panel after signing up for trial. I installed it. But the checkbox for installing Telerik UI for Xamarin is disabled. So I'm not able to install Telerik UI for Xamarin Please see the print screen. The error message says: 'Requires VIsual studio with Xamarin Support or Xamarin studio"

On my system I have Visual studio 2019 community edition with mobile application development workload installed, the following are already present on my system and I'm developing Xamarin Forms application actively:

Please suggest what is missing and what i can do.

The following is installed on my PC:

Microsoft Visual Studio Community 2019
Version 16.1.5
VisualStudio.16.Release/16.1.5+29025.244
Microsoft .NET Framework
Version 4.7.03062

Installed Version: Community

Azure App Service Tools v3.0.0   16.1.429.50124
Azure App Service Tools v3.0.0

C# Tools   3.1.1-beta4-19281-06+58a4b1e79aea28115e66b06f850c83a3f1fcb6d3
C# components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Common Azure Tools   1.10
Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.

Extensibility Message Bus   1.1.77 (master@24013d5)
Provides common messaging-based MEF services for loosely coupled Visual Studio extension components communication and integration.

IntelliCode Extension   1.0
IntelliCode Visual Studio Extension Detailed Info

Microsoft JVM Debugger   1.0
Provides support for connecting the Visual Studio debugger to JDWP compatible Java Virtual Machines

Microsoft MI-Based Debugger   1.0
Provides support for connecting Visual Studio to MI compatible debuggers

Mono Debugging for Visual Studio   16.1.1 (2473f22)
Support for debugging Mono processes with Visual Studio.

NuGet Package Manager   5.1.0
NuGet Package Manager in Visual Studio. For more information about NuGet, visit https://docs.nuget.org/

ProjectServicesPackage Extension   1.0
ProjectServicesPackage Visual Studio Extension Detailed Info

ResourcePackage Extension   1.0
ResourcePackage Visual Studio Extension Detailed Info

ResourcePackage Extension   1.0
ResourcePackage Visual Studio Extension Detailed Info

Visual Basic Tools   3.1.1-beta4-19281-06+58a4b1e79aea28115e66b06f850c83a3f1fcb6d3
Visual Basic components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Visual F# Tools 10.4 for F# 4.6   16.1.0-beta.19253.3+42526fe359672a05fd562dc16a91a43d0fe047a7
Microsoft Visual F# Tools 10.4 for F# 4.6

Visual Studio Code Debug Adapter Host Package   1.0
Interop layer for hosting Visual Studio Code debug adapters in Visual Studio

VisualStudio.Mac   1.0
Mac Extension for Visual Studio

Xamarin   16.1.0.545 (d16-1@db7c858e8)
Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android.

Xamarin Designer   16.1.0.418 (remotes/origin/d16-1@5b958bb10)
Visual Studio extension to enable Xamarin Designer tools in Visual Studio.

Xamarin Templates   16.2.112 (4db4af4)
Templates for building iOS, Android, and Windows apps with Xamarin and Xamarin.Forms.

Xamarin.Android SDK   9.3.0.23 (HEAD/d0b48056f)
Xamarin.Android Reference Assemblies and MSBuild support.
    Mono: mono/mono/2018-08@3a07bd426d3
    Java.Interop: xamarin/java.interop/d16-1@5ddc3e3
    LibZipSharp: grendello/LibZipSharp/d16-1@44de300
    LibZip: nih-at/libzip/rel-1-5-1@b95cf3f
    ProGuard: xamarin/proguard/master@905836d
    SQLite: xamarin/sqlite/3.27.1@8212a2d
    Xamarin.Android Tools: xamarin/xamarin-android-tools/d16-1@acabd26


Xamarin.iOS and Xamarin.Mac SDK   12.10.0.157 (6bd9475)
Xamarin.iOS and Xamarin.Mac Reference Assemblies and MSBuild support.

[Didi]

Hi Praveen,

Thank you for the provided information.

The most likely reason for being unable to install the Telerik Ui for Xamarin is a prerequisite that VS2019 seem to have changed in one of the latter Preview versions - it's called .NET Portable Library targeting pack. Please consider one of the following options : 

1. Install the .NET Portable Library targeting pack component manually through Visual Studio 2019 Installer, please check the image attached. After that you can try to install our product again.

2. You could install/update the latest Telerik Xamarin VSExtensions from your Extensions tab ( update to the latest version if you already have it, or search for it in the Online VS Marketplace ), in which case the extension would install the missing package and you'd be able to proceed with your installation.

I hope this information will help you solve the issue.

 

Regards,
Didi
Progress Telerik

[Praveen]

Thank you the 2nd option worked for us.

[James]

I have just wasted a significant amount of time trying to get this installed.  I tried the proper installer, the extension, adding various other things using VS installer.  It always said I didn't have the right elements installed.

I have just solved it though so posting here hoping it helps others.

I had VS2019 AND VS2019 preview installed.  The Xamarin installer is not smart enough to know a specific version cant be used.  As soon as I installed the prerequisites for all VS versions, I was finally able to install Xamarin.  Phew.

[Yana]

Hello James,

I am sorry to see that you are facing such difficulties in using our products.

Based on the provided details, we were not able to reproduce the described behavior. I have double-checked both the user scenarios:

• installing Telerik UI for Xamarin on a machine with Visual Studio 2019 Pro with required prerequisite and Visual Studio 2019 Preview without them 
• installing Telerik UI for Xamarin on a machine with Visual Studio 2019 Pro without required prerequisite and Visual Studio 2019 Preview with them

I can confirm that our web installers are installing the product in the Visual Studio instance that has the required system prerequisites. You could find some more details about the product system requirements in this documentation article.

However, could you please specify what are the components that you have installed in your preferred Visual Studio instance and our web installer did not detect? This will help us to further investigate the issue by your side. Some screenshots will be highly appreciated.

Regards,
Yana
Progress Telerik

[James]

Hi Yana,

Not sure screenshots are relevant now as it is working.

Just to clarify, I had to ensure that all prerequisites were installed in Preview and normal before the installer would allow me to install it.  It didn't ask me which version I wanted to install into prior to doing prerequisite checks.  If you can't reproduce it then perhaps it was just a quirk of my install and likely wont affect anyone else.  If it does, they can try my solution.

I also tried rebooting between attempts too.

Thanks for attempting to repro.

[Sachin]

I already have license and I'm not able to install Telerik UI for Xamarin through control panel.
Showing Installer Message "Telirik UI for Xamarin requires Visual Studio with extention.... " though I
already installed it.

Please refer to snapshot attached

[Lance | Senior Manager Technical Support]

Hi Sachin,

That error isn't about the Telerik extensions, but the Microsoft Xamarin components.

Let me give you a direct path fix fix this.

1. Double check that you have the minimum system requirements 
2. Open Visual Studio Installer and check that you have the Mobile development with .NET workload installed
3. Open Visual Studio Installer, switch to Additional Components tab and check that you also have the following items installed:
   • Xamarin
   • Text Template Transformation (this one is usually the culprit)
4. Close all instances of Visual Studio
5. Rerun the Progress Control Panel installer or download and run the msi installer

Alternative Option

Use the Telerik NuGet server to install Telerik.UI.for.Xamarin to all of your projects.

Regards,
Lance | Manager Technical Support
Progress Telerik

[Sachin]

Hi Lance,
I double checked everything you suggested and found that all my machine meets all requirement.
Infact I tried installing Telerik UI for Xamarin on other machine as well but I got the same error
i.e. "Telirik UI for Xamarin requires Visual Studio with extention..."
PFA the snapshots.

I believe Telerik Version 2019.1.318.1 is no longer compatible with VS 2019 - ver16.7.2.

Kindly assist 

[Yana]

Hi Sachin,

Thank you for the detailed information.

Since R2 2019 release of Telerik UI for Xamarin, we have been changed the prerequisites of the product and only the two components that my colleague Lance has mentioned are required. For older then R2 2019 product versions (as it is in your case) the following components should exist:

• Xamarin
• Text Template Transformation
• .NET Portable Library Targeting Pack

Could you please try to add .NET Portable Librabry Targeting Pack component to your Visual Studio installation and let us know in case you are still unable to install UI for Xamarin through the Progress Control Panel?

I am looking forward to your feedback.

Regards,
Yana
Progress Telerik

[Sachin]

Thank you Lana and Lance for you extended support. Much appreciated. 

After adding ".NET Portable Library Targeting Pack" to Vs2019, I successfully installed Telerik Xamarin.

[john]

Tnx for your help, I faced with similar issue recently

[Trupti]

I  cannot see the option  telerik.ui.for.Xamarin  when I try to install. All I see is  telerik.ui.for.Xamarin.trial  option.

I have created a project using xamarin forms and added telerik. And When I run My project I dont see any output window. AM I missing something. 

[Yana]

Hello Trupti,

The available downloads from the Progress Control Panel depend on the license the logged user has assigned, so in the concrete case, I assume the logged user has only a trial version of Telerik UI for Xamarin.

As to the other issue with the output window - I would need more details on the exact setup in order to provide proper suggestions. Please open a new support ticket or a forum thread with detailed information on the issue you're experiencing, and, if possible, send us a sample app (sending zip files is possible only through private support tickets), and we'll take a look.

Regards,
Yana
Progress Telerik