Collisions between UI elements in Unity

Question

I am able to detect collision between UI components and a gameobject if my canvas is rendered in the world space. Here, I am trying to find collision between two UI elements (say UI buttons) when the canvas render mode is screen space overlay.

I added box collider components to my UI buttons and tried using OnCollisionEnter2D and OnTriggerEnter2D. But, the collision is not detected. Is there a way to detect the collision?

Answer 1

The question does not require a code body. However, I have figured out a solution. TO both the UI elements, you need to:

• Attach a rigidbody2d component
• Attach a box collider component
• disable gravity
• enable the isTrigger checkbox.

Now in the script attached to one of the UI elements:

void OnTriggerEnter2D(Collider2D other) 
{
    Debug.Log ("Triggered");
}

This would detect the collision.