My Visual studio 2017 nuget package can't install following error is occured in Xamarin.Forms Portable class library Project
Severity Code Description Project File Line Suppression State
Error Could not install package 'Xamarin.Android.Support.Compat 25.3.1'. You are trying to install this package into a project that targets 'MonoAndroid,Version=v6.0', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author. 0
Xamarin.Android.Support.Compat version 25.3.1 has dependencies of
MonoAndroid 7.0
Xamarin.Android.Support.Annotations (= 25.3.1)
Xamarin.Build.Download (>= 0.4.3)
Re: https://www.nuget.org/packages/Xamarin.Android.Support.Compat/25.3.1
You need to set the Target Framework to at least 7.0.
Re: https://developer.xamarin.com/guides/android/application_fundamentals/understanding_android_api_levels/#Target_Framework
Related
After booting up my PC I tried to continue using a previous project I had been working on:
ASP.NET MVC Core 6.0.
All of a sudden Microsoft.EntityFrameworkCore was not installed in the solution.
After trying to reinstall the Microsoft.EntityFrameworkCore nuget package I received the following errors:
Package restore failed. Rolling back package changes for 'BulkyBook' (my project)
NU1202: Package Microsoft.Extensions.Logging 6.0.0 is not compatible with net6.0 (.NETCoreApp,Version=v6.0). Package Microsoft.Extensions.Logging 6.0.0 does not support any target frameworks.
NU1202: Package Microsoft.Extensions.Options 6.0.0 is not compatible with net6.0 (.NETCoreApp,Version=v6.0). Package Microsoft.Extensions.Options 6.0.0 does not support any target frameworks.
... for all dependencies AND
NU1202: Package Microsoft.EntityFrameworkCore 6.0.5 is not compatible with net6.0 (.NETCoreApp,Version=v6.0). Package Microsoft.EntityFrameworkCore 6.0.0 does not support any target frameworks.
When trying to install ANY nuget packages requiring net6.0 I get the same issue.
I have done a reset of Windows (keeping files but losing all programs) and fully reinstalled Visual Studio 2022.I still have the same issue.
This is killing me, I'm willing to try anything.
Image for proof:
I'm building a Xamarin App!
When I install Xamarin.Android.Support.CustomTabs Nuget package it shows me this error and no other nuget package is updating even !
I tried everything searched on google but still I've no idea what to do with this error
Error:
Severity Code Description Project File Line Suppression State
Error CS0103 The name 'Detail' does not exist in the current
context DummyApp C:\Users\hashir.malik\source\repos\DummyApp\DummyApp\DummyApp\MainPage.xaml.cs 29 Active
Error NU1202 Package Xamarin.Android.Support.CustomTabs 27.0.2 is not
compatible with netstandard2.0 (.NETStandard,Version=v2.0). Package
Xamarin.Android.Support.CustomTabs 27.0.2 supports: monoandroid81
(MonoAndroid,Version=v8.1) DummyApp C:\Users\hashir.malik\source\repos\DummyApp\DummyApp\DummyApp\DummyApp.csproj 1
ScreenShot : https://i.stack.imgur.com/DaLBj.png
You're trying to install the package to the shared project which is .Net Standard 2.0.
The Packages only need to be installed to the Android project. So uncheck "DummyApp" and only check "DummyApp.Android" in NuGet UI.
I am facing a very strange issue regarding installing NuGet packages in the xamarin android project. When I try to install any NuGet package in xamarin android project getting an error.
Here is the error message I am getting from the NuGet package manager.
?Restoring packages for E:\Projects\Sample\Sample1\Sample2\Smaple3\SampleApp.Android\SampleApp.Android.csproj...
NU1202: Package Microsoft.WindowsAPICodePack.Shell 1.1.0 is not compatible with monoandroid81 (MonoAndroid,Version=v8.1). Package Microsoft.WindowsAPICodePack.Shell 1.1.0 supports: net (.NETFramework,Version=v0.0)
NU1202: Package Microsoft.WindowsAPICodePack.Core 1.1.0 is not compatible with monoandroid81 (MonoAndroid,Version=v8.1). Package Microsoft.WindowsAPICodePack.Core 1.1.0 supports: net (.NETFramework,Version=v0.0)
Package restore failed. Rolling back package changes for 'SampleApp.Android'.
Time Elapsed: 00:00:01.9192186
========== Finished ==========
Installed packages in the Android project:
Remove Microsoft.WindowsAPICodePack from your PCL, since you are having a reference of it in the PCL and then your Android project refers the PCL that works like an indirect reference hence it is causing the issue.
Solution: remove the package from PCL project
While installing Plugin.FirebasePushNotification getting error-
Could not install package 'Xamarin.Firebase.Messaging 60.1142.0'.
You are trying to install this package into a project that targets 'MonoAndroid,Version=v7.0', but the package does not contain any assembly references or content files that are compatible with that framework.
For more information, contact the package author.
after updating Android API 7.0 this installation works well(when create a new project)
BUT i already have a project with compile version Android 6.0.
While installing this plugin on this project then it shows same error.
So how to solve this installation issue on my previous project?
You need to set your <TargetFrameworkVersion> to Android 8.0 or greater.
https://developer.xamarin.com/guides/android/application_fundamentals/understanding_android_api_levels/#framework
https://www.nuget.org/packages/Xamarin.Firebase.Messaging/ version 60.1142.0 only includes a MonoAndroid80 folder which means it requires APIs from Xamarin.Android 8.0 at a minimum to compile against.
If you want to figure this out yourself, do the following:
Download https://github.com/NuGetPackageExplorer/NuGetPackageExplorer
Download the NuGet via Manual Download
Open the .nupkg
Expand the lib folder to see the respective target frameworks
I am attempting to instal the Caliburn.Micro-Contrib NuGet package into an empty PCL project in VS 2013 Professional.
I get the following error from NuGet when attempting to install the package:
Attempting to resolve dependency 'Caliburn.Micro (≥ 1.3.1)'.
Installing 'Caliburn.Micro 1.3.1'.
Successfully installed 'Caliburn.Micro 1.3.1'.
Installing 'Caliburn.Micro-Contrib 1.0.2'.
Successfully installed 'Caliburn.Micro-Contrib 1.0.2'.
Adding 'Caliburn.Micro 1.3.1' to ClassLibrary2.
Uninstalling 'Caliburn.Micro 1.3.1'.
Successfully uninstalled 'Caliburn.Micro 1.3.1'.
Install failed. Rolling back...
Could not install package 'Caliburn.Micro 1.3.1'. You are trying to install this package into a project that targets 'portable-net40+win+wpa81+MonoAndroid10+xamarinios10+MonoTouch10', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author.
What is the cause of the problem and how can I fix this?
Note the package installs successfully for a standard class project but not for PCL projects. The PCL is intended to be a Xamarin Android and iOS project.
It doesn't appear that Caliburn.Micro Contrib has a PCL Compatible package. It also depends on the full (not PCL) version of Caliburn Micro. Also note that it appears that Xamarin support is only available in the pre-release beta of Caliburn Micro.