I built a Xamarin simple app project for android device.
It's compiled and also run on my device, whereas after some times I faced an error.
the error is:
"This project needs to be migrated."
and also I couldn't create new android Xamarin project.
In fact, it's disappeared from new project section.
What can I do??
My issue was that "Mobile development with .NET" was not selected/installed in the Visual Studio Installer for VS2019 (coulda sworn I selected that when I moved from 2017 to 2019, but whatever). Once selected and installed, the migration warnings disappeared and I could run the projects.
I had this issue when running the visual studio in safe mode, suggesting that an extension is disabled/missing.
Related
What I have done
I looked up a few tutorials and did all their steps. MRTK is successfully installed. I created a simple world in Unity 3D (latest version), with 2 moveable (using the hand interface) objects. In game mode, everything works fine.
Now I wanted to deploy it to my Hololens 2.
So I build the project with the following settings:
After that I connected my Hololense to the PC and want to deploy it via Visual Studio 2022.
It is set to "Release" "ARM 64" "Device".
After pressing on "start without debugging" i will get the following error Codes (as an image because it is better structured):
I already tried installing different SDK packages and creating 5 new Unity projects but it doesnt work. Hope you can help me!
Greetings!
Apart from the suggestions from derHugo, you may also check the following configurations of your project.
Make sure Unity is 2020.3 LTS, and you have used Mixed Reality Feature tools to import/update to the latest package.
Select a specific “Target SDK Version” and “Visual Studio Version” instead of “Latest installed”
In visual studio, make sure the Platform Toolset consists with Unity selection (v143 for vs 2022)
Reinstall “Universal Windows Platform development” component in VS installer and ensure any related to v143 ARM64 build tools are installed (because you are using vs 2022)
LNK1136 error is caused by corrupt or invalid files. Because to deploy a unity project to HoloLens, you need to build a Unity project first. If cleaning VS build then rebuilding is not working, try to remove Unity build then rebuild.
VS installer Screenshot added:
Visual Studio is the recommended tool (superseding Xamarin Studio) on both Windows and Mac. However, the VSTS page Build your Xamarin app says to use "Xamarin". Presumably that means Xamarin Studio, even though the the "Install Xamarin" link on the page points to Visual Studio. That ambiguity and the March 6 date on the page indicate that it was overlooked during the rollout of Visual Studio 7 for Mac, leaving us to wonder what is the right approach for setting up an agent.
What is the best way to create an iOS build agent these days? Do you install Visual Studio for Mac or Xamarin Studio?
Sounds like a bit of confusion here in the terminology. The IDE is now Visual Studio for Mac, but the underlying framework is still Xamarin. That is to say, Xamarin.iOS/Xamarin.Android/Xamarin Forms are "integrated" into Visual Studio for Mac; they are the tools that will compile and package your mobile app. This is what the VSTS build task page is saying when it asks you to "Install Xamarin".
As for setting up a VSTS build agent, here's a checklist that will hopefully get you going:
Download and install Visual Studio for Mac on a computer running OS X/macOS. Confirm that Visual Studio for Mac can indeed build and sign the IPA's.
If necessary, install all the certificates and provisioning profiles, and confirm that the IPA is correctly signed.
Create a build project in VSTS.
Install the VSTS build agent for OS X/macOS and connect/register the build agent to the VSTS project. Please be aware that the Xamarin license task/utility is deprecated and no longer needed. If that does appear as a step in your VSTS build project, delete it.
Go back to VSTS, and configure the VSTS project to build the Xamarin.iOS project via the OSX/macOS build agent. Once the build agent is connected to the VSTS project.
I'll admit, there is a lot of moving parts and things to do here. I hope this high level overview is enough to point you in the right direction.
Per starain's advice, I tried installing VS for Mac. It started up, but failed with an 'Unable to parse condition "!(Exists($(SharedVersionOutputDirectory)))"' error. I've encountered several bugs in the Xamarin tool chain, so this may have nothing to do with VS vs. XS, but just be part of the current duct-tape-and-bailing-twine experience. OTOH, there's still a top-level Xamarin page saying VS Mac is still preview, so who knows how baked it really is?
So even though the Mac build agent does find and run the VS Mac build tooling, I gave up and used my Windows build agent instead, and had MSBuild on Windows connect to the Mac for the iOS build.
I am using VS 2015 enterprise update 3. After fresh installation, I created a new project--> cross platform tools--> Blank Xaml App(Xamarin.Forms Portable). then made Andriod project is default project from Solution explorer.
Tried select a device but none is available, altough when i open SDK Manager i can see 3 devices.
Andriod error
List of devices
Did you setup your android project as your startup project?
Werid because in your screenshot it shows your portable project as your startup project. This is how it looks like when i debug my android project.
I am 100% new to Xamarin seem to have done something wrong in Visual Studio 2015. I am just trying to view my Main.axml file however the designer is giving me the following error:
A valid Android SDK could not be found. An existing SDK with platform tool and at least one platform needs to be registered with the IDE.
Do I need to do soemthing specific to fix this?
As you can see I am targeting Android 4.1 API 16.
Another weird issue is that the Android SDK Manager is disabled is this normal?
visual studio -> tools ->options:
To launch Android SDK Manager I have to launch Android studio and click on Android SDK Manager :
I had same issue with my sdk on visual studio. I could not open sdk manager from visual studio and xamarin designer could not open even though i pointed to an sdk location. however, other things worked correctly. Updating sdk from android studio and upgrading jdk to 1.8.0_102. solved my problem.
While the Xamarin is updating, that error can see.
Solved is found the tools zip file:
C:\Users\User Name\AppData\Local\Android\android-sdk\temp\tools_r25.2.4-windows (or your active last tools, doesnt matter. for ex. tools_r23.0.1)
-> Open that zip and unzip in "tools" folder.
-> Cut that folder and, paste parent folder (C:\Users\User Name\AppData\Local\Android\android-sdk)
Delete files from this path:
C:\Users\ ++ Your Windows Account Here ++ \AppData\Local\Microsoft\VisualStudio\14.0\ComponentModelCache\
I would like to know if it is possible to compile a Monotouch project that does not have any reference to any UI library in Visual Studio. This project only use the Monotouch framework.
I have done some research and I read that, if the project don't have any reference to the Apple SDK , I should be able to build a MonoTouch project using Visual Studio. If I can, do i need some particular configuration to achive my goal.
Some related links:
How easy is it to develop an iPhone application using MonoTouch in Visual Studio?,
How can I develop for iPhone using a Windows development machine?,
iPhone development on Windows
Even if your project doesn't have any references to MonoTouch libraries, it is still a MonoTouch library project. Visual studio doesn't recognize that project type and because of that you can't really compile the code.
I wrote about this a while ago, and how you can change your project so you can actually use Visual Studio for development (although you won't be able to run the app) here:
http://escoz.com/blog/developing-with-monotouch-on-windows-and-visual-studio
Hope that helps.
There is a Visual Studio addin that may help. It hasn't been updated in a while though. Also, this would only help you write the code. To compile and run the code, you will still need MonoTouch and a Mac. https://github.com/follesoe/VSMonoTouch
Update : As of February, 2013 Xamarin includes Visual Studio support for developing iOS apps in their Business sku of Xamarin.iOS. You can fully develop on Windows + Visual Studio, but still need a Mac on your network to perform builds and run the simulator.
If you're talking about building a DLL or library in VS.NET that you could then use in a MonoTouch project, I believe the answer is NO. To be usable in MT, the code has to be compiled with MT.
The MonoDevAssist VS extension (search VS Extension Manager for "monotouch") seems to work perfectly. There are just a couple of easy steps to follow post-installation, which are documented here:
http://monodevassist.codeplex.com/documentation