So my buttons stop working...

Questions & Answers
1

Yeah, I know other people had this problem, but none of their answers worked for me… I’m making a text based game, and on the Chapter Select screen, the buttons stopped working after I changed their highlighted color. It did it before when I tried to build the scene before, but that time the buttons stopped working when I changed their position on the screen.

Can anyone help? I’ve gotta get this scene complete so I can get to work on the actual levels.

Thanks

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I attached a picture of the screen, just in case.

2

The easiest way to debug is to :

1. Run the game in the editor, not in full screen (uncheck Maximize On Play button)

2. Select the EventSystem GameObject of your scene

3. In the inspector, open the Preview Window and make it big enough

4. Move your mouse on your screen, and check if the name of your button (or one of its children) appear next to the field pointerEnter

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If you can’t see it, possible solutions :

1. Make sure you don’t have any UI elements above your button which could block the raycasts

2. Make sure you have enabled raycasting on the images used by your buttons (check box Raycast Target in the edito)

Raycast target

3. Make sure you have an Event System in your scene and a GraphicRaycaster attached on a gameobject (on the Canvas usually)

4. Make sure your buttons are interactable (checkbox Interactable in the editor)

5. Make sure you have a callback attached to your buttons so as to trigger your functions

6. If your canvas is set to Screen Space - Camera or World space, make sure you have specified a camera

7. If you have rotated / scaled UI elements, the click may not be detected. In this case, uncheck Ignore Reversed Graphics in the Graphic Raycaster component of the canvas, or set the rotation correctly of the element and use a rotated / scaled child image (with Raycast target disabled) in order to have the desired “graphical result”

8. Check if you have a Canvas Group attached to the object or one of its parent, and make sure the Interactable and Blocks Raycasts are both checked.

3

I know this is already answered but i had another similar problem that i already solved, so i am going to show for someone that may have the same problem.

Problem:
In one of my projects i had a UI with buttons that was enabled and visible all the time. It worked well except for when my character started walking, then the button didn’t work.
Solution:
I realize it was a problem with the pointerEnter, i tried many solutions that didn’t work but in the end the solution was to change the Canvas render mode to ‘Screen Space - overlay’ i am not sure why but it was fixed then.