Seems like no way to clear all event subscriptions of an InputAction

Unity Engine
,
1

I need to subscribe some action to my xbox controller buttons when a UI panel is onFront, and clear all subscriptions when it’s not onFront.
It’s quite annoying to do this by -= everywhere, could be negligent some times and thus make mistakes.
Could Unity just add a ClearAllEventHandlers() or GetInvocationList() function to InputAction class to make this easier? (you can not do this out side the class which define the event)

Or anyone has a better way to deal with the console button controlling UIs, for example , press x to toggle an infomation window display or not.

2

Create separate ActionMaps for game play and UI and turn on and off (enable) depending which one is that you need at the moment.

3

Well…I was already did this. The problem is, for example, when two UI panels are stacking showing, and both of them response button x to print some log, but this is not correct, just the TOP one should do this.

I found a way to encapsulate the c# Events to UnityEvents for a easy RemoveAll:

        public class InputActionEvent : UnityEvent<InputAction.CallbackContext> { }
        protected InputActionEvent onShoulderButtonPerformed = new InputActionEvent();
        protected InputActionEvent onShoulderButtonCanceled = new InputActionEvent();

        void OnShoulderButtonPerformed( InputAction.CallbackContext ctx ) { onShoulderButtonPerformed.Invoke( ctx ); }
        void OnShoulderButtonCanceled( InputAction.CallbackContext ctx ) { onShoulderButtonCanceled.Invoke( ctx ); }
      
        /// <summary>
        /// when panel OnTop
        /// </summary>      
        protected void BindInputActionEvent() {
            Debug.Log( $"{transform.name} :  BindInputActionEvent" );
            GM.InputAction_UI_changePageShoulder.performed += OnShoulderButtonPerformed;
            GM.InputAction_UI_changePageShoulder.canceled += OnShoulderButtonCanceled;
        }
        /// <summary>
        /// When panel NotOnTop or Closed
        /// </summary>
        protected void UnBindInputActionEvent() {
            Debug.Log( $"{transform.name} :  UnBindInputActionEvent" );
            GM.InputAction_UI_changePageShoulder.performed -= OnShoulderButtonPerformed;
            GM.InputAction_UI_changePageShoulder.canceled -= OnShoulderButtonCanceled;
        }
        /// <summary>
        /// when panel OnInstantiate
        /// </summary>
        protected void InitButtonEvent() {
            Debug.Log( $"{transform.name} :  InitButtonEvent" );
        }
        /// <summary>
        /// when panel OnDestroy
        /// </summary>
        protected void RemoveAllListeners() {
            Debug.Log( $"{transform.name} :  ClearAllEvents" );
            onShoulderButtonPerformed.RemoveAllListeners();
            onShoulderButtonCanceled.RemoveAllListeners();
        }

Put these code in BaseUIPanel class to avoid -= everywhere things, just no brain AddListener to the InputActionEvents, happy as hell.