UI button not working

Questions & Answers
1

I’m doing a project and I created a UI canvas under which I added 3 empty GameObjects. In these empties, there are buttons. It worked properly before with no issue but then all the buttons in the 2 first empties stopped working. They react when you click them (by having a kind of gray tint) but they don’t do call the function they’re supposed to call.

I have

  • An event system

I’ve already tried :

  • Deleting and re-creating the event system
  • Add a Canvas group to the Main canvas GameObject
  • Add a Graphic Raycaster on the two empties with problematic buttons
  • Marking the buttons as interactable (they were already interactable anyway)
  • Restarting unity & playing the game (too many times)

The hierarchy of the UI :

MainCanvas
     UIEmpty1
          Button1
     UIEmpty2
          Button2
          Empty
               Button3
               Button4
          Button4
          Button5
     UIEmpty3
          Button6
          Button7

Also : They’re not all open at the same time

2

Since the Button reacts to being pushed visibly, this sounds like it could be a scripting error (an error in the code that the Button component calls onClick).

Add some kind of test event to the problem Button’s onClick event in the Editor, something like en/disabling a Sphere that you can see or something. This will help you determine if it’s a problem with the Button getting UI events (which sounds like is NOT the problem since it tints when pressed) or the code that is being called by the Button.

Are you rigging your event through the Editor or through a script? If you’re rigging through a script, drop in some Debug.Log("someMessage");to make sure the AddListener code is working.