SwipeView类似桌面的滑动界面(15)

                    else //carry on as normal 
                    { 
                        edgePosition = mCurrentPage*mPageWidth; 
                    } 
                } 
                 
            } 
            else //backwards 
            { 
                if(mDistanceX < -DEFAULT_SWIPE_THRESHOLD)//go backwards 
                { 
                    edgePosition = (int)(fingerUpPage)*mPageWidth; 
                } 
                else //return to start position 
                { 
                    if(Math.round(fingerUpPage)==0)//if at beginning, correct 
                    { 
                        //need to correct for when user starts to scroll into  
                        //nothing then pulls it back a bit, this becomes a  
                        //kind of backwards scroll instead 
                        edgePosition = (int)(fingerUpPage)*mPageWidth; 
                    }