Mapsui Uno Getting Started

Uno Preparation

https://platform.uno/docs/articles/get-started-vs.html

Step 1

Create new 'Uno App (Xamarin,UWP)' in Visual Studio

Step 2

In the package manager console type:

PM> Install-Package Mapsui.Uno -pre

repeat this for all the targets you are using (Change the default Project in the Package Manager Console)

Step 3

Open MainPage.xaml and add namespace:

xmlns:mapsui="clr-namespace:Mapsui.UI.Uwp;assembly=Mapsui.UI.Uno"

Add MapControl to the Grid:

<Grid>
  <mapsui:MapControl x:Name="MyMap" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" />
</Grid>

In MainPage.xaml.cs, add namespace:

using Mapsui.Utilities;

Add code to the constructor:

        public MainPage()
        {
            this.InitializeComponent();

            MyMap.Map.Layers.Add(OpenStreetMap.CreateTileLayer());
        }

Step 4

Run it and you should see a map of the world.

Troubleshooting

Unable to resolve the .NET SDK version as specified in the global.json.

global.json (change the version to "6.0.400" or what is installed on the Computer)

Duplicate Attribute errors:

Add following line to the ...Wpf.csproj.

    <!-- Work around https://github.com/dotnet/wpf/issues/6792 -->
    <ItemGroup>
      <FilteredAnalyzer Include="@(Analyzer->Distinct())" />
      <Analyzer Remove="@(Analyzer)" />
      <Analyzer Include="@(FilteredAnalyzer)" />
    </ItemGroup>
  </Target>

System.MissingMethodException: Method not found:

See for solution here https://github.com/unoplatform/uno/issues/9297

Upgrading to the latest Uno.UI Dev Version should help too.