public void syncWidgetPageItems(final int page, final boolean immediate) {
        int numItemsPerPage = mWidgetCountX * mWidgetCountY;

        //計算Widget相關的長寬和邊距，用於後面確定位置
        final ArrayList<Object> items = new ArrayList<Object>();
        int contentWidth = mWidgetSpacingLayout.getContentWidth();
        final 
 
int cellWidth = ((contentWidth - mPageLayoutPaddingLeft
                - mPageLayoutPaddingRight - ((mWidgetCountX - 1) * mWidgetWidthGap)) / mWidgetCountX);
        int contentHeight = mWidgetSpacingLayout.getContentHeight();
        final int cellHeight = ((contentHeight - mPageLayoutPaddingTop
                
 
- mPageLayoutPaddingBottom - ((mWidgetCountY - 1) * mWidgetHeightGap)) / mWidgetCountY);

        // 這裡是計算Widget的數目和每頁數目，用於後面計算WIdget的預覽圖
        int offset = page * numItemsPerPage;
        for (int i = offset; i < Math.min(offset + numItemsPerPage,
                mWidgets.size()); ++i) {
            items.add(mWidgets.
 
get(i));
        }

        //獲取Widget資訊，填充到PagedViewWidget物件裡面
        final PagedViewGridLayout layout = (PagedViewGridLayout) getPageAt(page
                + mNumAppsPages);
        layout.setColumnCount(layout.getCellCountX());
　　　　　//遍歷所有widget和快捷方式
        for (int i = 0; i < items.size(); ++i) {
            Object rawInfo = items.get(i);
            PendingAddItemInfo createItemInfo = null;
            PagedViewWidget widget = (PagedViewWidget) mLayoutInflater.inflate(
                    R.layout.apps_customize_widget, layout, false);
　　　　　　　　//Widget資訊
            if (rawInfo instanceof AppWidgetProviderInfo) {
                // Fill in the widget information
                AppWidgetProviderInfo info = (AppWidgetProviderInfo) rawInfo;
                createItemInfo = new PendingAddWidgetInfo(info, null, null);
                int[] cellSpans = mLauncher.getSpanForWidget(info, null);
                widget.applyFromAppWidgetProviderInfo(info, -1, cellSpans,
                        mHolographicOutlineHelper);
                widget.setTag(createItemInfo);
            } 
　　　　　　　　//快捷方式
　　　　　　　　else if (rawInfo instanceof ResolveInfo) {
                // Fill in the shortcuts information
                ResolveInfo info = (ResolveInfo) rawInfo;
                createItemInfo = new PendingAddItemInfo();
                createItemInfo.itemType = LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT;
                createItemInfo.componentName = new ComponentName(
                        info.activityInfo.packageName, info.activityInfo.name);
                widget.applyFromResolveInfo(mPackageManager, info,
                        mHolographicOutlineHelper);
                widget.setTag(createItemInfo);
            }
            widget.setOnClickListener(this);
            widget.setOnLongClickListener(this);
            widget.setOnTouchListener(this);
            widget.setOnKeyListener(this);

            //計算每個Widget的位置和佈局資訊
            int ix = i % mWidgetCountX;
            int iy = i / mWidgetCountX;
            GridLayout.LayoutParams lp = new GridLayout.LayoutParams(
                    GridLayout.spec(iy, GridLayout.LEFT), GridLayout.spec(ix,
                            GridLayout.TOP));
            lp.width = cellWidth;
            lp.height = cellHeight;
            lp.setGravity(Gravity.TOP | Gravity.LEFT);
            if (ix > 0)
                lp.leftMargin = mWidgetWidthGap;
            if (iy > 0)
                lp.topMargin = mWidgetHeightGap;
            layout.addView(widget, lp);
        }