将 BuildContext 传递给非构建器方法

Question

I was wondering if passing around BuildContext objects that we receive in the build method is a good idea? Basically pass it to places that are non-builder methods.

For example, I may pass it to my ViewModel in the case of the Provider package. Is it a good thing to do?

Or will it have repercussions?

Answer 1

Passing BuildContext around is generally a bad idea.

This object is not made to be passed around. If you need a BuildContext , instead create a new one (using a custom StatelessWidget or Builder ).

Failing to do so may cause bugs that are hard to debug (such that causing a ProviderNotFoundException ), and creating a new BuildContext instead of reusing an existing one can improve performances.