Launcher3移除Hotseat图标

Launcher3/res/xml/default_workspace_4x4.xml中删除

这个时候不会出现Hotseat图标，但是底部仍然会有空白的空间

Launcher3\src\com\android\launcher3\DeviceProfile.java

//        hotseatBarSizePx = isVerticalBarLayout()
//                ? Utilities.pxFromDp(inv.iconSize, dm)
//                : res.getDimensionPixelSize(R.dimen.dynamic_grid_hotseat_size)
//                        + hotseatBarTopPaddingPx + hotseatBarBottomPaddingPx;
        hotseatBarSizePx = 0;


将
        // Hotseat
        if (isVerticalBarLayout()) {
            hotseatBarSizePx = iconSizePx;
        }
        hotseatCellHeightPx = iconSizePx;
修改为
        // Hotseat
        if (isVerticalBarLayout()) {
            hotseatBarSizePx = 0;//iconSizePx;
        }
        hotseatCellHeightPx = 0;//iconSizePx;