在 Flutter Documentation, Explanation of Provider.of 段

Question

This Given Link Describes Provider.of

in the text its using a example of a basic shopping app with items whic can be added by tapping. Here Provider.of is used to remove all contents of the cart. and it mentions " We could use Consumer for this, but that would be wasteful. We'd be asking the framework to rebuild a widget that doesn't need to be rebuilt."

Provider.of<CartModel>(context, listen: false).removeAll();

Here we can clearly see contents of the cart are changed and hence requires a rebuild... then why does it uses PRovider.of and mentions it doesnt require a rebuild.

Answer 1

use case of this snipped code is very clear.

Provider.of<CartModel>(context, listen: false).removeAll();

use it whenever you don't need to change your UI.