【bug记录】Scaffold.of() called with a context that does not contain a Scaffold.

Scaffold.of() called with a context that does not contain a Scaffold.

出现场景

一个使用了的Provider的页面，点击抽屉时候出现了以上错误，经查阅加入Builder即可。 主要原因：build方法如果嵌套build后,接收不到外层的context参数。