How to save plugin project settings

Hi,

Since you are configurable at a project level, so every opened project will create an object RobotProjectSettings , so that your code

private static RobotProjectSettings robotProjectSettings = new RobotProjectSettings();

will make no sense. This class should be created by the IDEA project module itself.

Please try to change your code RobotProjectSettings a bit:

@State(name = "RobotProjectSettings", storages = @Storage(value = "exygen.xml"))
public class RobotProjectSettings implements PersistentStateComponent<RobotProjectSettings.State> {
// private static RobotProjectSettings robotProjectSettings = new RobotProjectSettings();
   private State state= new State();


// public static RobotProjectSettings getInstance() {
//    return robotProjectSettings;
// }

   public static RobotProjectSettings getInstance(@NotNull Project project) {
      return project.getService(RobotProjectSettings.class);
   }
   // ... other code no needs to change
}

and fix the corresponding errors which call this method, and pass a project parameter to it, like this:

. I've tried the fixed code and it works well.

Also, this document might be helpful: https://plugins.jetbrains.com/docs/intellij/plugin-services.html

Thank you. It works.

The key is point I haven't found was:

project.getService(RobotProjectSettings.class);