I created a new Xamarin Forms solution with .Net Standard 2.0
It builds OK.
Then I add a NuGet Xamarin.Forms.Maps:
and appear this Build error:
Severity Code Description Project File Line Suppression State
Error An error occurred trying to install required android components on Project 'eCidadaoMobile.Android'.
Project 'eCidadaoMobile.Android' requires the following components installed on your machine:
Xamarin.GooglePlayServices.Base
JavaLibraryReference: https://dl-ssl.google.com/android/repository/google_m2repository_r24.zip-m2repository/com/google/android/gms/play-services-base/8.4.0/play-services-base-8.4.0.aar-8.4.0
AndroidResources: https://dl-ssl.google.com/android/repository/google_m2repository_r24.zip-m2repository/com/google/android/gms/play-services-base/8.4.0/play-services-base-8.4.0.aar-8.4.0
Xamarin.GooglePlayServices.Basement
JavaLibraryReference: https://dl-ssl.google.com/android/repository/google_m2repository_r24.zip-m2repository/com/google/android/gms/play-services-basement/8.4.0/play-services-basement-8.4.0.aar-8.4.0
AndroidResources: https://dl-ssl.google.com/android/repository/google_m2repository_r24.zip-m2repository/com/google/android/gms/play-services-basement/8.4.0/play-services-basement-8.4.0.aar-8.4.0
Xamarin.GooglePlayServices.Maps
JavaLibraryReference: https://dl-ssl.google.com/android/repository/google_m2repository_r24.zip-m2repository/com/google/android/gms/play-services-maps/8.4.0/play-services-maps-8.4.0.aar-8.4.0
AndroidResources: https://dl-ssl.google.com/android/repository/google_m2repository_r24.zip-m2repository/com/google/android/gms/play-services-maps/8.4.0/play-services-maps-8.4.0.aar-8.4.0
Please double-click here to install it.
Intallation Errors: XA5207 Please install package: 'GPS Base' available in SDK installer. Java library file 'C:\Users\tonyv\AppData\Local\Xamarin\Xamarin.GooglePlayServices.Base\8.4.0\embedded\classes.jar' doesn't exist.
XA5207 Please install package: 'GPS Basement' available in SDK installer. Java library file 'C:\Users\tonyv\AppData\Local\Xamarin\Xamarin.GooglePlayServices.Basement\8.4.0\content\classes.jar' doesn't exist.
XA5207 Please install package: 'GPS Maps' available in SDK installer. Java library file 'C:\Users\tonyv\AppData\Local\Xamarin\Xamarin.GooglePlayServices.Maps\8.4.0\content\classes.jar' doesn't exist. 0
If I double-click the error message, nothing happens.
How and where to install these required files?
Under the path C:\Users\UserName\AppData\Local\Xamarin, delete the Xamarin.GooglePlayServices folders, in order to redownload them during the next startup.
Related
I'm trying to use MonoDevelop in order to work with .NET Core. In a brand new Linux Mint 20.1 machine, I installed MonoDevelop 7.8.4, and opened a project that I'm working on, and the IDE complained imediatelly:
Getting restore information for solution /home/REDACTED/project.sln
ApplicationName='/usr/bin/mono64', CommandLine='"/usr/lib/mono/msbuild/15.0/bin/MSBuild.dll" "/tmp/NuGetScratch/3r24uwj4.84i.nugetinputs.targets" /t:GenerateRestoreGraphFile /nologo /nr:false /v:q /p:RestoreBuildInParallel="False" /p:RestoreUseSkipNonexistentTargets="False"', CurrentDirectory='/home/REDACTED', Native error= Cannot find the specified file
The file /usr/bin/mono64 does not exist. Anyone knows how I can fix this?
UPDATE
When I try tobuild the project, it fails with the followiing error:
Error: NuGet packages need to be restored before building. NuGet MSBuild targets are missing and are needed for building. The NuGet MSBuild targets are generated when the NuGet packages are restored. (My.App)
This seems to be connected with the previous error message.
I have just installed Ubuntu and for anyone interested I found a solution.
In /usr/bin, make a mono64 symlink to mono-sgen. mono is already a symlink to that.
I will investigate the other tools suggested.
when generating a new project xamarin.form prism I get this error when running. With the previous version 2.1.7 it worked for me OK.
It does not allow me to open the Nuget Package since it also gives an error.
Any recommendation?
I saw the 2 posts of this error but they do not apply to me.
Error NETSDK1004 Assets file 'C:\Empresas\Job_Facu\Job\Job.Prism\Job.Prism\obj\project.assets.json' not found. Run a NuGet package restore to generate this file. Job.Prism C:\Program Files\dotnet\sdk\3.1.202\Sdks\Microsoft.NET.Sdk\targets\Microsoft.PackageDependencyResolution.targets 234
The error tells you what to do. Run a NuGet restore. Visual Studio should help you do this automatically. Note that if this occurred after updating dependencies sometimes Visual Studio gets confused and it's best to close Visual Studio and reopen it. This usually gets it to refresh itself so you get the updated package restore.
If that's not working for you, you can download the latest nuget.exe and from the command line navigate to the solution directory and execute the command {path to nuget.exe} restore.
When NuGet performs a restore it generates the project.assets.json file in the obj folder of each project it has restored. This in turn provides MSBuild with the reference information it needs to properly reference your dependencies like Prism and Xamarin.Forms.
I have recently ran into similar issue as well, seemingly out of the blue. I believe upgrading my build machine to the latest VS version (VS for Mac 8.10.4 (build 11))
NETSDK1004: */project.assets.json' not found. Run a NuGet package restore to generate this file.
To fix, I had to run Nuget Restore twice. Once for the shared project directory and once for the iOS project.
If I run the restore just for the Shared/(main.sln file) project directory I get the error.
If I run the restore for the iOS project the build passes but IPA file isn't created.
Need to run both.
Modules used for CI/CD build in Azure Devops Pipeline
I have a Xamarin Forms Project - the Android project targets API 28 (Pie) and uses packages.config for the nuget references. All of the packages have a targetFramework="monoandroid90". The project compiles and runs correctly.
I want to migrate to using PackageReference, so I use the Migrate packages.config to PackageReference option.
After this completes I try to build the project and receive an error regarding a missing package:
Xamarin.Android.Support.Annotations.28.0.0.1
Looking in the packages folder, I can see that none of the Xamarin.Android.Support packages have been downloaded and I can't get them to download - even by reinstalling the package.
I also noticed that the csproj file reference monoandroid81 for all the nugets, even though the packages.config used monoandroid90
Has anyone had a similar difficulty after migrating?
I'm getting
Unable to resolve 'NETStandard.Library (>= 1.6.1)' for '.NETStandard,Version=v2.0'.
in VSTS build using Hosted2017 build agent after I upgraded my aspnetcore app to netcoreapp2.0 and my libraries to use netstandard2.0.
Works fine locally.
I've edited my build definition to use .net core build task v2.* preview:
here is the build log:
Current agent version: '2.120.2'
Download all required tasks.
Downloading task: DotNetCoreCLI
Starting: Get Sources
Syncing repository: Liero/vyvojari-sk (GitHub)
...details ommited
HEAD is now at e448a25... Upgraded to .NET Core 2.0
Finishing: Get Sources
Starting: Restore
==============================================================================
Task : .NET Core
Description : Build, test, package, or publish a dotnet application, or run a custom dotnet command. For package commands, supports NuGet.org and authenticated feeds like Package Management and MyGet.
Version : 2.0.5
Author : Microsoft Corporation
Help : [More Information](https://go.microsoft.com/fwlink/?linkid=832194)
==============================================================================
SYSTEMVSSCONNECTION exists true
Downloading: https://dist.nuget.org/win-x86-commandline/v4.0.0/nuget.exe
Caching tool: NuGet 4.0.0 x64
Using version: 4.0.0
Found tool in cache: NuGet 4.0.0 x64
Saving NuGet.config to a temporary config file.
Can\'t find loc string for key: NGCommon_NoSourcesFoundInConfig
NGCommon_NoSourcesFoundInConfig d:\a\1\Nuget\tempNuGet_734.config
"C:\Program Files\dotnet\dotnet.exe" restore d:\a\1\s\src\CommandStack\CommandStack.csproj --configfile d:\a\1\Nuget\tempNuGet_734.config --verbosity Detailed
Restoring packages for d:\a\1\s\src\CommandStack\CommandStack.csproj...
C:\Program Files\dotnet\sdk\1.0.4\NuGet.targets(97,5): error : Unable to resolve 'NETStandard.Library (>= 1.6.1)' for '.NETStandard,Version=v2.0'. [d:\a\1\s\src\CommandStack\CommandStack.csproj]
Generating MSBuild file d:\a\1\s\src\CommandStack\obj\CommandStack.csproj.nuget.g.props.
Generating MSBuild file d:\a\1\s\src\CommandStack\obj\CommandStack.csproj.nuget.g.targets.
Writing lock file to disk. Path: d:\a\1\s\src\CommandStack\obj\project.assets.json
Restore failed in 115.64 ms for d:\a\1\s\src\CommandStack\CommandStack.csproj.
Errors in d:\a\1\s\src\CommandStack\CommandStack.csproj
Unable to resolve 'NETStandard.Library (>= 1.6.1)' for '.NETStandard,Version=v2.0'.
NuGet Config files used:
d:\a\1\Nuget\tempNuGet_734.config
Error: C:\Program Files\dotnet\dotnet.exe failed with return code: 1
Packages failed to restore
******************************************************************************
Finishing: Restore
******************************************************************************
and here is the source code: https://github.com/Liero/vyvojari-sk/tree/e448a25fb8c481704e9102aaaeb8b84b9aee7b02
Update 18/09/2017
Step 2 is no longer needed. I've left it in the solution though as it may still help some people. Thanks, #Liero for point this out.
Original Answer
I've just experienced this problem too and solved it by doing three things:
Use the .NET Core SDK(! - not runtime!) version 2.0.0:
Use the latest NuGet feed (4.3.0):
Restore your packages:
Update
It's worth mentioning here that you should specify where you get your NuGet packages from. Most applications will probably just use the NuGet.org feed, as per the screenshot (see small checkbox), but you may have your custom feeds specified in a NuGet.config file. In that case, tick 'Feeds in my NuGet.config' and then specify the path to that file.
To illustrate the order, this is my working queue:
I hope this helps you and anyone else who has come up against this problem. If you have any questions, let me know. :)
You should select Feed(s) I select here for Feeds to use option. If you leave Use packages from this VSTS/TFS feed empty, packages will be downloaded from https://dist.nuget.org/.
Else, if you want to use Feeds in my NuGet.config as Feeds to use, you should specify the path for your NuGet.config file.
I have received a similar error after generating a project using dotnet new angular which created a project relying on netcoreapp2.0. Inspection of project properties revealed that version 2.0 was not properly recognized (did not appear in the installed framework list).
Solution was to update Visual Studio 2017, as the minimum version required to support netcoreapp2.0 projects seems to be 15.3.1.
What worked for me was installing .NET Core SDK 2.0 and making the following changes:
in .csproj:
change
<TargetFramework>netcoreapp1.1.0</TargetFramework>
to
<TargetFramework>netcoreapp2.0</TargetFramework>
and in global.json:
"sdk": { "version": "1.1.0" }
to
"sdk": { "version": "2.0.0" }
I didn't know how to use Chris Paton' solution
Updating the Visual Studio 2017 to latest 15.4.1 version resolved the problem for me.
I created an application using Imagemagick library with Qt on Mac.
Now that I want to deploy the application for windows:
I installed the imagemagick library
on my pc,
I installed the SDK version of QT 4.7
I added my include and lib paths
And when I go run the application I'm getting errors that I think they are related to mingw32.
here are the build issues:
and here is the compile output:
Can someone Identify the error ?
What do I have to do to deploy the application for windows?
I also tried to use a Mingw32 version of my library but again, It didnt work:
When I put -lmagick after the lib it says file lmagick cannot ne found
and when I try to build unticking the shadow build checkbox in the build settings, it give me the errors in the first screenshoot. Thank you
See the answer to this question.