I have tried to resolve fallowing error but not luck, What my issue is while build xamarin.android project shows 'java.lang.IllegalArgumentException: already added :Landroid/support/v4/accessibilityservice/Accessibility
ServiceInfoCompat' error. I have search the cause of this error, many solutions are said that duplicate library files exist in our project i.e "xamarin.android.support.v4 and xamarin.android.support.v7". If I have remove any one of this again I am getting build faileds. If I have remove 'xamarin.android.support.v4' shows "view.pager" not found error and if I have remove 'xamarin.android.support.v7' getting lot of errors. Please suggest any idea to fix this issue. Thanks in advance.
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Earlier I faced the same issue, I had done these steps to solve it
1) First check the Target Framework i.e Mono Android it should be version more than 7.0 ,if it is not available in the properties. Update your Android SDK manager then you can set to v7.0
2)Uninstall the Xamarin.Forms packages and support files and Reinstall all with latest version
Related
I'm building a new Xamarin Forms 5 app using VS 2022 17.1.1. Everything in the project appears to be up-to-date.
I've been working on this project for a while and never had this issue. All of a sudden it just appeared today. The last action I took was to install the Plugin.InAppBilling package, thought the package in question is not used by the Plugin.InAppBilling package.
The error is as follows:
All I can see is that the shared project is using System.Numerics.Vectors version 4.5.0 and it seems to be dependency of Xamarin.Essentials which is version 1.7.1 in my project.
However, the version number of System.Numerics.Vectors seems to be 2.0.5.0 in the Android and iOS projects.
I found the GitHub issue here but I'm not seeing any clear resolution to this issue. Even though it appears to be a warning, in my case, I can no longer run the app because I keep getting deployment error to the Android Emulator or actual device. It simply refuses to deploy my app to the device/emulator. So, it's really NOT a warning in my case. It's a show-stopper. I'm a bit surprised about how lightly the Xamarin Essentials folks seem to have taken this issue on GitHub.
Has anyone actually resolved this issue? If so, what's the solution?
BTW, in my case both the Android and the iOS projects are throwing this error/warning and both use System.Numberics.Vectors version 2.0.5.0 even though the shared project has version 4.5.0 installed as a dependency undre Xamarin Esssentials.
I'd appreciate some pointers on how to make this issue disappear. Thanks.
At first, you can try to update the Xamarin.Essentials package in the Android and IOS project with the nuget package manager to the version 1.7.1.
And then, if the error is still here, you can right click the reference and remove the reference of the System.Numberics.Vectors 2.0.5.0 both in your Android and IOS project. Then download the System.Numberics.Vectors 4.5.0 in the nuget package manager both too.
I am trying to enable Firebase Analytics in my Xamarin Forms project. The iOS version goes very well, however, when adding nuget packages in Android project I am getting error while building my project. I am following Using Firebase Analytics in your Xamarin.Forms app to enable firebase in my app. I have added
Xamarin.FireBase.Analytics and Xamarin.FireBase.Analytics.Impl
Nugets. while running my app I am getting weired error attached in the screenshot. Clicking any of those errors takes me to a file "values.xml". In fact there are two identical values.xml files (these files are not located in my android project, but opens when clicking on the errors)
After switch on aapt2 for build the issue was solved for me
i had the same issue with the new 116+ versions.. downgrade to version 71.xx and it solves the problem
I am implementing google Admob in my Xamarin.Forms application. My android project is working perfectly but my iOS project fails to build. when I build the project it shows
Failed to resolve "ObjCRuntime.TrampolineBlockBase" reference from "Xamarin.iOS, Version=0.0.0.0, Culture=neutral, PublicKeyToken=84e04ff9cfb79065"
and it also say I am missing few files.
I tried to download the mobile sdk framework for ios from https://developers.google.com/admob/ios/quick-start#cocoapods and then add to the project but I can't seem to add this framework to references.
Any kind of help is really helpful.
I had this issue on App Center. Resolved by upgrading SDK and Xcode versions in build configuration options
I was able to resolve the issue from upgrading the visual studio 2019 to 16.4.5 and downgrading the Xamarin.Firebase.iOS.AdMob from 7.47.0.1 to 7.27.0.3
After doing that I restarted Visual Studio and build the project it successfully built.
Also, I referred to this link for help
Edit:
In short, Visual studio installed the new appropriate mono framework for ios which basically solved the issue here.
In case anyone else runs into this issue, I got this issue after adding the Maps sdk to iOS. I had to upgrade Xamarin.iOS from 13.6.0.12 to 13.10.0.21 to resolve the issue.
I've Google Cloud Messaging to my project but after adding it, Project stopped building. It gives build output as
C:\Program Files (x86)\MSBuild\Xamarin\Android\Xamarin.Android.Common.targets(1135,2): error MSB6006: "aapt.exe" exited with code 1.
I searched through net and got info to turn on the "Log verbosity to Diagnostic". It gives the build out in detailed form and after going through the log I came to know that during build below lines gets added to manifest file:
provider android:authorities="${applicationId}.google_measurement_service" android:exported="false" android:name="com.google.android.gms.measurement.AppMeasurementContentProvider"
Issue here is the "${applicationId}", during build it should get replaced with ApplicationId.
This issue can be fixed on Android Studio by doing changes the Gradle file but I'm using Xamarin.
I'm using GCM version 29.0.0.2.
Please let me know the possible workaround.
Thanks
The current version of GCM is dependent on Google Measurement service and the error is related to Google Measurement Service.
To solve the issue I downgraded the GCM to the version which is not dependent on Google Measurement service.
you can't do it straight away as Nugget downloads the latest version. So in order to downgrade the version of GCM. Remove the updated version and specify the version of GCM to be downloaded in packages.config file.
Xamarin Studio will consider the specified version as missing package and automatically download the mentioned package.
In my case I downloaded the 27.0.0 version of GCM.
I saw that Xamarin was now free and decided to try writing a mobile app using it instead of what another technology I was playing with. After some various hiccups, I was able to get the new Xamarin Android project to build, deploy and run on the simulator. I then decided to try out MQTT connectivity from it before I went any further. No matter which MQTT library I to install from NuGet, for example the System.Net.Mqtt one from Xamarin, I get the following error:
"Could not install package 'System.Net.Mqtt 0.3.12-pre'. 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."
I tried several others with no success. It does the same for the ios and Android projects. I did try changing the Android SDK version to use for compiling, but still had the same result. I also don't understand why it says MonoAndroid since I thought all the Mono references were changed to Xamarin? I'm using Visual Studio 15 with Update 2. I tried the stable Xamarin version and also tried the latest alpha. I'm not sure what else to try, I'd really to give Xamarin a try for this project. I did some searching and couldn't find anything that appeared to help with this issue.
Thanks in advance for any help.
Use the Package Manager Console. Then, either:
Install the latest version of MQTT library.
Or install first its dependency, RX-Main and then MQTT.
If you still get an error, please share with us the Log that is shown in the PM Console.