Preserving ICommand during Linking-CodePudding

In my Xamarin.Forms code I use ICommand several times for creating hyperlinks.

The code works fine during debugging, but the command gets removed during release by the linker.

I created an XML file in the root of my Android project with its Build Action set to LinkDescription, that has the following code:

<?xml version="1.0" encoding="utf-8" ?>
<linker>
    <assembly fullname="System">
        <type fullname="System.Windows.Input.ICommand"></type>
    </assembly>
</linker>

I expected that would preserve the command, but no; the links again don't work during release. Am I doing something wrong?

CodePudding user response：

I don't know why the XML solution did not work, but here is what worked in my case:

Using the [Preserve] attribute before each ICommand had the desired effect during Release!

CodePudding user response：

You've got the wrong assembly. The easiest way to figure out the right assembly is to CTRL Click the symbol ICommand in a Xamarin project, which will open a decompiler window with the assembly in a #region at the top of the file.

#region Assembly netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51
// C:\Program Files\dotnet\sdk\NuGetFallbackFolder\netstandard.library\2.0.3\build\netstandard2.0\ref\netstandard.dll
#endregion

Now change the XML to:

<?xml version="1.0" encoding="utf-8" ?>
<linker>
    <assembly fullname="netstandard">
        <type fullname="System.Windows.Input.ICommand" />
    </assembly>
</linker>