Scroll for iphone/android

:

private function listTouchBeginF(e:TouchEvent):void{

            if(this.listP.height>this.mask_mc.height){

                stage.addEventListener(TouchEvent.TOUCH_END,listTouchEndF,false,0,true);

                if(!this.listP.cacheAsBitmap){

                    this.listP.cacheAsBitmap = true;

                }

                // 150 and 300 are to allow drag beyond listP borders and allow tween back to borders.

                dragRect.y = this.mask_mc.y-this.listP.height+this.mask_mc.height-150;

                dragRect.height = this.listP.height-this.mask_mc.height+300;

                this.listP.startTouchDrag(e.touchPointID,false,dragRect);

                //startDragY = this.listP.y;

                //startDragTime = getTimer();

                this.listP.addEventListener(Event.ENTER_FRAME,listTouchMoveF,false,0,true);

            }

        }

        private function listTouchMoveF(e:Event):void{

            startDragY = this.listP.y;

            startDragTime = getTimer();

        }

        private function listTouchEndF(e:TouchEvent):void{

            stage.removeEventListener(TouchEvent.TOUCH_END,listTouchEndF,false);

            this.listP.removeEventListener(Event.ENTER_FRAME,listTouchMoveF,false);

            this.listP.stopTouchDrag(e.touchPointID);

            dragTime = getTimer()-startDragTime;

            // predict end point, duration.  if abs <500, converge slowly.  if abs>900, converge quickly

            velocity = 1000*(this.listP.y-startDragY)/dragTime;

            if(velocity>0){

                // lowerLimit = this.mask_mc.y, assigned in init()

                endY = Math.min(lowerLimit,this.listP.y+velocity);

            } else if(velocity<0){

                // this.listP.height changes depending on expanded/contracted titles

                upperLimit = this.mask_mc.y+this.mask_mc.height-this.listP.height;

                endY = Math.max(upperLimit,this.listP.y+velocity);

            } else {

                // velocity = 0;

                upperLimit = this.mask_mc.y+this.mask_mc.height-this.listP.height;

                endY = Math.min(lowerLimit,this.listP.y);

                endY = Math.max(upperLimit,endY);

            }

            //trace(velocity,this.listP.y,endY,upperLimit)

            if( (velocity>=0 && endY==lowerLimit) || (velocity<=0 && endY==upperLimit) ){

                duration = 1;

                TweenLite.to(this.listP,duration,{y:endY,ease:Quint.easeOut});

            } else {

                duration = (endY-this.listP.y)/velocity;

                TweenLite.to(this.listP,duration,{y:endY,ease:Quint.easeOut});

            }

        }