I hope this is kind of easy to preview or split the changes that i am making ?

Thanks, this is much easier to understand,

You won't have to make a separate PR for each and every small feature, just make sure you can easily see what actually changed.

I did actually sync the Unity scripts in master with the 6000 branch after your PR. So a PR to master is fine too.
Sorry for not letting you know.

I tried this in my own project that already uses addressables, but where I've always manually built them so far.
With some small modifications I was able to export and the addressable assets were properly included in my build.

To get it to work I needed to:

Remove these comments:

#if USING_ADDRESSABLES
// uncomment for addressables
//using UnityEditor.AddressableAssets;
//using UnityEditor.AddressableAssets.Settings;
#endif

And I needed to add an Assembly Definition Reference to FlutterUnityInteration.Editor.asmdef.

"references": [
        "Unity.Addressables.Editor"
    ],

Having this reference (by name, not GUID) in a project without the Addressables package installed makes it show up greyed out. It doesn't cause any errors and installing the Addressables package enables it again.
So that should be safe to include by default.

One small issue seems to be that the state of the checkbox isn't always correct.
Sometimes USING_ADDRESSABLES is enabled but the checkbox shows up as unchecked when opening the settings menu.
Simply restarting Unity can cause this. Removing the define symbol in the player settings makes this happen too.

Maybe this state can be directly loaded from the existence of USING_ADDRESSABLES?

Cool I will note these things down. And I will update the full changes this was raised most probably just to verify everything is fine for reviewing.

Sorry for the long delay. I'll make sure to get this sorted this week.

Just did some tests to confirm:

• It still functions installed as a classic unitypackage.
• Can install using package manager local path.
• Can be installed using package manager git url.
  Using the following url for now.

https://github.com/Selva1910/flutter-unity-view-widget.git?path=example/unity/DemoApp/Assets/FlutterUnityIntegration#experimental/unity_6000

• Builds from the command line still work with the new assembly definitions and a package manager install.

<unity path> -projectPath <project path> -batchmode -buildTarget Android -executeMethod FlutterUnityIntegration.Editor.Build.DoBuildAndroidLibraryRelease -quit

• All script compile in Unity 6000 and 2022.

I spotted a small issue when importing in older legacy Unity versions, but i'll look into that myself.

Since you have merged it now, it is working on this git url from now onwards.

https://github.com/juicycleff/flutter-unity-view-widget.git?path=example/unity/DemoApp/Assets/FlutterUnityIntegration#experimental/unity_6000