lua -- 清理数组

function UIBagController:ClearGoods( )
    for i=1,#self.itemArr do
        print("=======ClearGoods======" .. i)
        if self.itemArr[i] ~= nil then
            self.itemArr[i]:removeFromParent();
        end
    end
    self.itemArr = nil;
    self.itemArr = {};
end