可以请你的卸载从一次应用设备和运行了吗？ 如果您已经创建了数据库，并且增加了比数据库中的新列将不能反映就在当前的表结构。 所以在卸载应用程序将创建数据库与更新数据结构新实例。

Can you please Uninstall Application once from Device and Run again ? If you have already created database and you have added new column than Database will not reflect right away on current table structure. So after uninstalling application will create new instance of database with updated Data Structure.