SwipeView类似桌面的滑动界面(7)

    } 
     
    /**
     * Set the width of each page by using the layout parameters of a child. Call this function before you add
     * the child to the SwipeView to maintain the child's size. This function returns an integer that should 
     * be added to the left margin of the first child and the right margin of the last child. This enables all
     * the children to appear to be central
     * 
     * @param childLayoutParams A child view that you have added / will add to the SwipeView
     * @return An integer to add to the left margin of the first child and the right margin of the last child
     */ 
    public int calculatePageSize(MarginLayoutParams childLayoutParams)  
    { 
        return setPageWidth(childLayoutParams.leftMargin + childLayoutParams.width + childLayoutParams.rightMargin); 
    } 
     
    /**
     * Return the current width of each page
     * 
     * @return Returns the width of each page
     */ 
    public int getPageWidth() 
    { 
        return mPageWidth; 
    } 
     
    /**
     * Assign a PageControl object to this SwipeView. Call after adding all the children
     * 
     * @param pageControl The PageControl object to assign
     */ 
    public void setPageControl(PageControl pageControl) 
    { 
        mPageControl = pageControl; 
         
        pageControl.setPageCount(getPageCount()); 
        pageControl.setCurrentPage(mCurrentPage); 
        pageControl.setOnPageControlClickListener(new OnPageControlClickListener()  
        { 
            public void goForwards()  
            { 
                smoothScrollToPage(mCurrentPage+1);