Error retrieving parent for item: No resource found that matches the given name 'Theme.AppCompat.Light.DarkActionBar', in Xamarine Android . I am using Visual Studio 17.
And also
When i am intalling below package from Nuget Package Manager in Visual Studio 2017 for Xamarine.Android i am getting erorr below.
Error:
Could not install package 'Xamarin.Android.Support.v7.RecyclerView 27.0.2.1'. You are trying to install this package into a project that targets '.NETFramework,Version=v4.6', 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.
It's probably a build issue, clean your solution, delete bin and obj folder and then rebuild, see if it persists.
You can also try restarting VS once.
If it persists you might be missing the Appcompat library, which you can install via nuget.
Related
Error:
Severity Code Description Project File Line Suppression State
Error Could not install package 'System.Xml.XmlDocument 4.3.0'. You are trying to install this package into a project that targets '.NETPortable,Version=v4.5,Profile=Profile259', 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.
I have tried with below set of Trial and error methods but no luck.
1.Cleaned solution and Build/Rebuild Solution.
2.Deleted Packages and restored.
3.Deleted .vs folder and Tried.
4.Replaces System.XML with version 2.0.5 in Mono android file and tried.
5.Tried installing "System.Xml.XmlDocument" but Not allowing to install it and prompted below error
"Severity Code Description Project File Line Suppression State
Error Could not install package 'System.Xml.XmlDocument 4.3.0'. You are trying to install this package into a project that targets '.NETPortable,Version=v4.5,Profile=Profile259', 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."
6.Trying to add reference but not allowing to add reference.It Prompts below error
"Error HR has been returned from Call to a COM component"
7.Merged from iOS latest update but no use same error.
8.Removed empty System.Xml folder from object browser and checked.
9.Removed System.xml.dll and Reinstalled and checked.
10.Removed empty System.Xml.XmlDocument and reinstalled and checked.
I have used visual studio 2019, I have added some NuGet packages but it's show error like..
Error Could not install package 'Microsoft.Build.Framework 14.3.0'. You are trying to install this package into a project that targets 'MonoAndroid,Version=v9.0', 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.
Note: My Xamarin Binding library(Android) solution target version9.0.
please help me to resolve this issue.
Try by updating your Microsoft.Build.Framework package to the latest version (at the moment it is 16.0.461).
You can check it also here: https://www.nuget.org/packages/Microsoft.Build.Framework/
Once I copied the build task property section from my iOS csproj to my Android csproj.. I got a slightly different message. It asked me to add Microsoft.Build.Utilities.Core.
I then had to add the Microsoft.Win32.Registry 5 nuget then as it tried to install 4.3.0 which my Android project didn't like.
I encounter a stranger behavior with a Xamarin.Android project in Visual Studio on Windows.
I've created a new Android blank project, and I try ton install the NuGet package "AForge" (a mathematics library), but I get the following error message:
Package AForge 2.2.5 is not compatible with monoandroid81
(MonoAndroid,Version=v8.1).
I've already tried to re create several projects, after having relaunched Visual Studio and the computer, but the problem is still the same.
However, if I do the same thing on Mac, through Visual Studio for Mac, I don't encounter the same problem: the package is well installed.
In add, I can see in the package.config file, that the package il well related to monodroid81:
<?xml version="1.0" encoding="utf-8"?>
<packages>
<package id="AForge" version="2.2.5" targetFramework="monoandroid81" />
</packages>
Would you have any explanation about this issue?
Update: new issue
Hi #Leo Liu-MSFT, I come back to you as I encounter an new issue. The dll copy works fine locally, but I get an error on AppCenter:
CoreCompile:
/Library/Frameworks/Mono.framework/Versions/5.10.1/lib/mono/4.5/csc.exe
/noconfig /nowarn:1701,1702 /nostdlib+ /errorreport:prompt /warn:4
/define:DEBUG;TRACE;XAMARIN_ANDROID_v1_0;MOBILE;ANDROID;ANDROID_1;ANDROID_2;ANDROID_3;ANDROID_4;ANDROID_5;ANDROID_6;ANDROID_7;ANDROID_8;ANDROID_9;ANDROID_10;ANDROID_11;ANDROID_12;ANDROID_13;ANDROID_14;ANDROID_15;ANDROID_16;ANDROID_17;ANDROID_18;ANDROID_19;ANDROID_20;ANDROID_21;ANDROID_22;ANDROID_23;ANDROID_24;ANDROID_25;ANDROID_26;ANDROID_27
/reference:/Library/Frameworks/Mono.framework/External/xbuild-frameworks/MonoAndroid/v1.0/Java.Interop.dll
/reference:/Users/vsts/.nuget/packages/microsoft.appcenter.analytics/1.7.0/lib/MonoAndroid403/Microsoft.AppCenter.Analytics.Android.Bindings.dll
/reference:/Users/vsts/.nuget/packages/microsoft.appcenter.analytics/1.7.0/lib/MonoAndroid403/Microsoft.AppCenter.Analytics.dll
/reference:/Users/vsts/.nuget/packages/...
Services/AudioService.cs(8,7): error CS0246: The type or namespace
name 'AForge' could not be found (are you missing a using directive or
an assembly reference?)
[/Users/vsts/agent/2.136.1/work/1/s/XxxApp/XxxApp.csproj] Done
Building Project
"/Users/vsts/agent/2.136.1/work/1/s/XxxApp/XxxApp.csproj"
(PackageForAndroid target(s)) -- FAILED.
So I tried your suggestion, but I get an error when I try to save the package:
a local file header is corrupted'
Would you have another suggestion?
Would you have any explanation about this issue?
You can get the official document here:
Description: With PackageReference, assemblies present at the root of
lib folder without a target framework specific sub-folder are ignored.
NuGet looks for a sub-folder matching the target framework moniker
(TFM) corresponding to the project’s target framework and installs the
matching assemblies into the project.
In this case, NuGet will consider installing this package to the .NET Framework, which is not compatible with monoandroid81. Then you will that error "Package AForge 2.2.5 is not compatible with monoandroid81".
To resolve this issue, the best way is contact the author of the AForge NuGet package to update this package, or you can also add reference dll file directly to your project.
Besides, if you still want to use nuget to manager this package, I would like provide you a workaround to resolve this issue:
Download this nuget package from nuget.org.
Copy the download package, rename it with .zip, like aforge.2.2.5 - Copy.nupkg.zip, then unzip it.
Open the package aforge.2.2.5.nupkg with NuGet Package Explorer(Get it from Microsoft store), add a new folder MonoAndroid81 under the lib node, add exists file AForge.dll and AForge.xml from the copy folder aforge.2.2.5 - Copy.nupkg.zip, save this nuget package.
Add this new create nuget package to the nuget local feed, then add this nuget package to the project. Do not forget delete the nuget package cache in the C:\Users\<UserName>\.nuget\packages\aforge before you add the package.
Hope this helps.
After Updating Xamarin Forms via NuGet I can't build my Android App anymore. This are the errors:
Error This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them. For more information, see ... The missing file is ..\..\packages\Xamarin.Forms.2.5.0.121934\build\netstandard1.0\Xamarin.Forms.props
Warning The referenced component 'Xamarin.Forms.Platform.Android' could not be found.
Warning The referenced component '***' could not be found. (for all my references except my own added reference "shared code")
Warning IDE0006 Error encountered while loading the project. Some project features, such as full solution analysis for the failed project and projects that depend on it, have been disabled.
Warning "\packages\Xamarin.Forms.2.5.0.122203\build\netstandard1.0\Xamarin.Forms.props" cannot be imported again. It was already imported at "\RajaChat.Android\RajaChat.Android.csproj (3,3)". This is most likely a build authoring error. This subsequent import will be ignored.
I already tried the following from answers here on stack overflow or xamarin forums:
Deleting the package folder and let nuget restore restore the packets
Using nuget console with: "Update-Package –reinstall"
Clean Build and Rebuild with deleting obj and bin folders
Downgrade to Xamarin.Build.Download 0.4.6
Unload and Reload the Android Project
Nothing helped, always the same output...
I turned on the TRACEDESIGNTIME for debugging the IDE0006 Error but it only gave me the same error as above in the *.designtime.log:
\RajaChat\RajaChat\RajaChat.Android\RajaChat.Android.csproj(308,5): error : This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them. For more information, see . The missing file is ..\..\packages\Xamarin.Forms.2.5.0.121934\build\netstandard1.0\Xamarin.Forms.props.
Using Visual Studio 2017 and Xamarin Forms 2.5.0.122203
From your solution remove the nuget package Xamarin.Forms, in the .csproj of your Android project, remove the import (check if there are multiple references and delete them) of your Xamarin.Forms package. It should be something like:
<PackageReference Include="Xamarin.Forms" Version="2.5.0.121934" />
And then remove the Xamarin.Forms package from the packages folder.
Now the solution should be free from Xamarin.Forms package references, add the Xamarin.Forms Nuget package and rebuild.
Remove all the references and delete bin and object folders in .Droid. then save and re-open the solution. Wait few seconds for VS to download and add all references from nauget.
Seemed to be related to this:
Nuget error install package Microsoft.NETCore.UniversalWindowsPlatform
but it is not, because the checkbox is checked by default in vs2017. I am running the creators update by the way and everything is up-to-date.
I have just started a new C# background IoT project and got this:
When manually installing the package in the package console I got this:
...
Successfully installed 'Microsoft.Net.Native.Compiler 1.6.0' to projectnamehere
Install failed. Rolling back...
Package 'Microsoft.NETCore.Jit.1.0.3' does not exist in project
...
Package 'Microsoft.NETCore.Jit.1.0.3' does not exist in folder
...
Install-Package : Could not install package 'Microsoft.NETCore.Jit 1.0.3'. You are trying to install this package into a project that targets '.NETCore,Version=v5.0', but the package does not contain any assembly references or content files that are compatible with that f
ramework. For more information, contact the package author.
seems related to this https://connect.microsoft.com/VisualStudio/feedback/details/1617801/newly-created-universal-app-projects-dont-work
but I have no idea how to fix it.
I have also seen a website suggesting to remove the project.json file, which I did but did not resolve it.
I have also closed vs2017 and modified the installtion to verify that the creators update sdk was checked and installed.
I have lowered the target version in the project props, but that did not help either.
edit manual install the jit package did not work either:
Could not install package 'Microsoft.NETCore.Jit 1.1.1'. You are trying to install this package into a project that targets '.NETCore,Version=v5.0', 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.
edit2 funny thing is that the solution explorer tells me that there is a project.json while there is none in windows explorer:
I verified the sdk installation by hitting the modify button of the vs2017 installation and tried to create a new project afterwards but got the exact same issue again.
Update: Microsoft updated the templates in their github (https://github.com/ms-iot/samples/commit/2e2aa34ab514b8c0725a53263898a412e0a1be1c) but didn't push it as an updated templates package to Visual Studio yet. Changed the answer accordingly.
Temporary fix:
replace in your .csproj file
<ItemGroup>
<!-- A reference to the entire .Net Framework and Windows SDK are automatically included -->
<None Include="project.json" />
</ItemGroup>
with
<PropertyGroup>
<RestoreProjectStyle>PackageReference</RestoreProjectStyle>
</PropertyGroup>
add the Microsoft.NETCore.UniversalWindowsPlatform package
Optional extra:
Add the Windows IoT Extension SDK via the references dialog
This issue has been fixed for Visual Studio 2017 in updated templates released here: https://marketplace.visualstudio.com/items?itemName=MicrosoftIoT.WindowsIoTCoreProjectTemplatesforVS15