Swipe functions for android.?

Open up the scripting reference and look up "Input" All the swipes are handled in there.

Here is a reference script I found, hope it helps :D

 /* this variable is used to make use of the swipe. Once a swipe is detected
  * a function called Swipe(swipeType : Vector2) is called
  */
 
 var controller : PlayerController;
 
 // variables:
 
 private var fingerStartTime : float   = 0.0;
 private var fingerStartPos  : Vector2 = Vector2.zero;
  
 private var isSwipe         : boolean = false;
 private var minSwipeDist    : float   = 50.0;
 private var maxSwipeTime    : float   = 0.5;
  
 // main function:
 function Update()
 {
     if (Input.touchCount > 0)
     {
         for (touch : Touch in Input.touches)
         {
             switch (touch.phase)
             {
                 case TouchPhase.Began :
                     /* this is a new touch */
                     isSwipe = true;
                     fingerStartTime = Time.time;
                     fingerStartPos = touch.position;
                     break;
 
                 case TouchPhase.Canceled :
                     /* The touch is being canceled */
                     isSwipe = false;
                     break;
 
                 case TouchPhase.Ended :
                     var gestureTime : float = Time.time - fingerStartTime;
                     var gestureDist : float = (touch.position - fingerStartPos).magnitude
                     
                     if (isSwipe && gestureTime < maxSwipeTime && gestureDist > minSwipeDist)
                     {
                         var direction : Vector2 = touch.position - fingerStartPos;
                         var swipeType : Vector2 = Vector2.zero;
                         
                         if (Mathf.Abs(direction.x) > Mathf.Abs(direction.y)
                         {
                             // the swipe is horizontal:
                             swipeType = Vector2.right * Mathf.Sign(direction.x);
                         }
                         else
                         {
                             // the swipe is vertical:
                             swipeType = Vector2.up * Mathf.Sign(direction.y);
                         }
                         
                         controller.Swipe(swipeType);
                     }
 
                     break;
                 }
             }
         }
     }
 }