Cannot build for Android in Unity 6

[silasalves]

• I am at the right place and my issue is directly related to ROS#. General technical questions I would post e.g. at ROS Answers or Stack Overflow. For library-specific questions I would look for help in the corresponding library forums.
• I have thoroughly read the Contributing Guideline and writing this issue is the right thing to do in my case.

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• I am using the latest ROS# version available here on the master branch.

• I am adding all required information, code and data files, screenshots and log files so that you can reproduce the problem.

• My OS is: Windows 11

• My Unity Version is: 6.0 (6000.028f1 and 6000.038f1)

• My ROS Distribution is: ROS2 Jazzy

• My Build Target Platform is: Android

Here is my bug description:

Compilation fails:

Library\PackageCache\com.siemens.ros-sharp@f2272aed2752\Runtime\RosBridgeClient\RosCommunication\UnityFibonacciActionSever.cs(61,35): error CS0246: The type or namespace name 'PropertyDrawer' could not be found (are you missing a using directive or an assembly reference?)

Library\PackageCache\com.siemens.ros-sharp@f2272aed2752\Runtime\RosBridgeClient\RosCommunication\UnityFibonacciActionSever.cs(60,6): error CS0246: The type or namespace name 'CustomPropertyDrawerAttribute' could not be found (are you missing a using directive or an assembly reference?)

Library\PackageCache\com.siemens.ros-sharp@f2272aed2752\Runtime\RosBridgeClient\RosCommunication\UnityFibonacciActionSever.cs(60,6): error CS0246: The type or namespace name 'CustomPropertyDrawer' could not be found (are you missing a using directive or an assembly reference?)

Library\PackageCache\com.siemens.ros-sharp@f2272aed2752\Runtime\RosBridgeClient\RosCommunication\UnityFibonacciActionSever.cs(63,51): error CS0246: The type or namespace name 'SerializedProperty' could not be found (are you missing a using directive or an assembly reference?)

Error building Player because scripts had compiler errors

Perform the following steps reproduce the bug: Try to compile any sample with ros-sharp code.

Observed results: Building the APK fails.

Expected results: The APK file would be created.

[StepanStulov]

This is due to the misconfiguration of the assembly definition at the com.siemens.ros-sharp/Editor/siemens.ros-sharp.Editor.asmdef file. It's marked as Any Platform instead of being Editor (see picture).

Note, that it's not conventional to surround Editor-only (the ones having ../Editor/.. in their path) scripts with the #if UNITY_EDITOR pre-processor directives. That directive is for injecting fragments of Editor code into Runtime code. It is not for Editor-only scripts. Please do not use this solution and fix the assembly definition file instead. That's the "Unity way".