I am trying to start my first Xamarin project and I got some issue while trying to install the MySqlEntity NuGet package.
Severity Code Description Project File Line Suppression State
Error NU1202 Package MySql.Data.Entity 6.10.8 is not compatible with monoandroid81 (MonoAndroid,Version=v8.1). Package MySql.Data.Entity 6.10.8 supports: net452 (.NETFramework,Version=v4.5.2) Refo_T3.Android C:\Users\evyat\source\repos\Refo_T3\Refo_T3\Refo_T3.Android\Refo_T3.Android.csproj 1
I tried this solution: Xamarin.Android: Package XX is not compatible with monoandroid81 (MonoAndroid,Version=v8.1)
and I still end up with errors.
It's my first application on Xamarin platform, I used to code in .NET but I decided to test my luck with Xamarin.
I couldn't find any more useful information online and I need your better experience.
Thank You :)
As written on the nuget packages page, the package is only available for .net framework >= 4.5.2
So you can't install it for Xamarin Android project only classic desktop .Net Framework applications.
Related
I'm having troubles while trying to add the Metadata of Autofac. I have to install the package "Autofac Extras: Metadata Attribute Support" which need Autofac.Mef. When installing this package, I get a message saying that I try to install Autofac.Mef 4.0.0 in a project targeting «portable-net45+win+wpa81» and that the package doesn't contain any file supporting this. (Same message with Autofac.Mef 3.0.3).
I could probably find a way to make my project work without Autofac's Metadata but I don't understand why this package isn't compatible with Windows Phone 8.1. Is there a solution to this issue?
Thanks in advance
Thomas
If you download the Autofac.Mef package manually and then open it up in NuGet Package Explorer you'll see that the Autofac.Mef package only targets .NET 4.5 apps - you can't use it in Windows Phone.
The reason for this is that the original framework MEF is only compatible with the full .NET framework. There's a "lighter weight" MEF 2 framework that is compatible with Windows Phone 8.1 but that's not the one Autofac.Mef works with.
There's no way to fix it. There's also no current plan to switch Autofac.Mef to using the Microsoft.Composition package.
I started a new universal app using vs 2015 ctp 5, mvvmcross 3.5.0 + sqllite plugin 3.5.0.
I am using the famous N=.... serie of vídeos, especificaly n=12 Collect A Bull as a reference.
I created a new pcl Project as a core and a universal app Project(3 projects), added nuget packages to core , wp8.1 and to w8.1, everything good so far.
Then i copied the service folder from N=12 sample, added related nuget packages.
My trouble is: at this line _connection = factory.Create("collect.sql"); on repository i've got a exception :
A first chance exception of type 'System.DllNotFoundException' occurred in Cirrious.MvvmCross.Plugins.Sqlite.WindowsCommon.DLL
Additional information: Unable to load DLL 'sqlite3': The specified module could not be found. (Exception from HRESULT: 0x8007007E)
The message is pretty clear cannot found sqlite3.dll i've seen some articles to add file and reference manually, but i did not see nothing on the vídeo, and the N-12 sample runs ok?
How the sample can access the mentioned sqlite dll, it could be related to universal app?
By comparison i found a missing reference in wp project: Community.CsharpSqlite.WP7 i added manually but does not solve.
Any suggestions?
So, to solve this i just have to download from http://www.sqlite.org/download.html and add reference manually
Thanks to mohibsheth on jabbr room
Try adding
Install-Package MvvmCross.HotTuna.Plugin.Sqlite -Version 3.2.1
from package manager console. It worked for me.
If directly it didn't worked, then remove all the packages and add all packages of version 3.2.2 like :
Install-Package MvvmCross -Version 3.2.2
Install-Package MvvmCross.HotTuna.Plugin.FieldBinding -Version 3.2.2
Install-Package MvvmCross.HotTuna.Plugin.Messenger -Version 3.2.2
Still having problem with the packages?Uncheck Silverlight from Core project properties.
Version 3.5.0 raising problems for me too.
Hope this helps.
I would check out the SQLite.Net-PCL project. I've heard of some success in people using that although I have not personally used it yet.
I just submitted a pull request to the MvvmCross Community SQLite project to update it to MvvmCross 3.5 and unified iOS API - so you could give that a try as well. There is no new NuGet for that yet however. You'll need to clone the project and compile it yourself.
I am making a Windows Phone 8 application, however because I would like at some point to also publish this application for Windows 8.1 store I made the effort to factor out the application logic into a portable class library. All good so far.
Now being a good boy I want to use an IoC container, unity by preference (since I am familiar with it in desktop and Win Phone 8 only apps)
So here's my problem; the NuGet Unity package will not install into my portable application with this result:
Installing 'Unity 3.0.1304.1'.
Successfully installed 'Unity 3.0.1304.1'.
Adding 'Unity 3.0.1304.1' to Logic.
Uninstalling 'Unity 3.0.1304.1'.
Successfully uninstalled 'Unity 3.0.1304.1'.
Install failed. Rolling back...
Could not install package 'Unity 3.0.1304.1'. You are trying to install this package into a
project that targets 'portable-net45+wp80+win', 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.
So is there a unity that works with a PCL? or is this just a shortcoming of the NuGet package?
I failed to find any useful documentation on the P&P website to indicate what platforms it is compatible with, but I know it does support WP8 at the least since the NuGet package is quite happy with libraries targeting just that.
Any guidance from the community would be very welcome here I don't want to abandon using a PCL for my app logic if I can avoid it, but if it comes down to a toss up between that and NuGet for package management I will in order to keep the NuGet goodness.
Could this be related to NuGet and Portable Class Libraries - Package doesn't target any framework? that seems more related to making your own NuGet packages for use in your own PCLs.
Unity 3.0.1304.1 does not contain any PCL assemblies so you will not be able to install it into a PCL project using NuGet.
The Unity NuGet package contains assemblies that target the following frameworks:
.NETFramework 4.5
.NETCore 4.5 (Windows Store/WinRT)
Windows Phone 8
You can see these target frameworks if you open the NuGet package into NuGet Package Explorer or download the NuGet package and open it using a program that supports zip files such as 7zip or Windows built-in zip file support.
So your possible options are:
Just use Unity in your main Windows Phone 8 application.
Write your own IOC container.
Use an IOC container that supports PCL projects such as Portable.CommonServiceLocator.
Compile your own PCL version of Unity.
Use a later version of Unity 3.5 since this includes a PCL assembly targeting portable-net45+wp80+win8+MonoAndroid10+MonoTouch10
Updated: 2014-05-11
Unity 3.5 now includes a PCL assembly that targets portable-net45+wp80+win8+MonoAndroid10+MonoTouch10 which will install into a project that targets portable-net45+wp80+win.
There is no Unity for PCL, but you can use Ninject for example.
When I try to install MvvmCross on my PCL, I get the error message below. I am running Visual Studio 2013 and the Xamarin Frameworks are installed for the PCLs.
I'm using Profile78, which targets .net framework 4.5, windows store apps (windows 8) and higher, Windows Phone 8, Xamarin.Android, and Xamarin.iOS.
Is there a better profile for me to use?
Could not install package 'MvvmCross.PortableSupport 3.0.13'. You are trying to install this package into a project that targets 'portable-net45+wp80+win+MonoAndroid10+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.
This area is changing with many new releases from many different places. I don't believe there are any definitive answers here today. There's a walkthrough using the latest platforms on http://slodge.blogspot.co.uk/2013/11/quick-run-through-using-pcls-in.html
That walkthrough uses:
Xamarin - iOS 1.8 & Android 4.10
Nuget - 2.7.2
MvvmCross - 3.0.14-beta3
Visual Studio 2012
portable profile 158
Other setups may also work - I don't know if anyone knows which is "better" - but it would be interesting to hear opinions!
I am trying to run the MvvmCross TipCalc sample. Using NuGet on TipCalc.UI.Droid to resolve references works OK. I then try to do same on TipCalc.Core and get:
Adding 'MvvmCross.PortableSupport 3.0.13' to TipCalc.Core.
Could not install package 'MvvmCross.PortableSupport 3.0.13'. You are trying
to install this package into a project that targets 'portable-win+net40+sl40+wp',
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.
Shouldn't the project just be ready to go for NuGet and it should "just work"? I am newbie to NuGet and MvvmCross. I am on Win7, VS.NET 2012, NuGet 2.7.40911.225, and latest MvvmCross-Tutorials from GitHub.
The problem will probably be in 'net40' and 'wp' platforms you've included - for PCL reasons we need a minimum of 'net45' and wp75' used - see the chart in http://msdn.microsoft.com/en-us/library/gg597391.aspx for the fact that 'net40' doesn't currently support Mvvm Types (e.g. INotifyPropertyChanged).
If it helps, my current development setup here has remained unchanged since March - it's still http://slodge.blogspot.co.uk/2013/04/my-current-pcl-setup-in-visual-studio.html
Shouldn't the project just be ready to go for NuGet and it should "just work"?
The process towards getting all the tooling for PCLs, nuget, VS, XS, etc working across all the platforms has been slow, hard work.... it is happening and it will one day 'just work' but it continues to take time and lots of work from lots of people.
There are still open workitems within nuget and within Xamarin - e.g. http://nuget.codeplex.com/workitem/2926 - which people are working on; some of the MS legal hurdles have recently been cleared (http://blogs.msdn.com/b/dotnet/archive/2013/10/14/portable-class-library-pcl-now-available-on-all-platforms.aspx); and technically things change on the Xamarin side with almost every Alpha release. But it is hard to get definitive answers on when things will be 100% ready and will "just work".
The good news is that:
with the 2 XML files from http://slodge.blogspot.co.uk/2013/04/my-current-pcl-setup-in-visual-studio.html I and plenty of others have been happily using PCLs and nuget for the last 6 months or so.
progress is still moving forwards
Some of these Q&A's may also help:
MVVMCross StarterPack not installing from Nuget in fresh PCL
Can't install MVVMCross on PCL project
MvvMCross 3.0.6 Nuget package installation issue
Adding MvvmCross nuget package reference to PCL failed
Getting PCL, Mvvmcross, Nuget and Xamarin Studio to play "nice" on Mac