How to select gameobjects on android by touching on them?

Questions & Answers
1

I am trying to create match 3 game like candy crush while learning unity.
How can i store references of two gameobjects(object) which are to be swapped on android device?
On computer it is working fine i did it using onMouseDown() on gameobject and having two gameobject references to store selected objects in gamecontroller script.
Thanks for any help and suggestion and sorry for bad English.

2

If you are asking just how to touch these objects:

if (Input.touchCount == 1)
   {
     Vector3 worldPos =       Camera.main.ScreenToWorldPoint(Input.GetTouch(0).position);
      Vector2 touchPos = new Vector2(worldPos.x, worldPos.y);

    	if (collider2D == Physics2D.OverlapPoint(touchPos))
        {
           //Do stuff with it here like check gameObject tags and such.
        }
    }