在颤振中提供程序包有问题

Question

This is the error showing Error is showing

And this is the code flutter provider

how to solve this

Answer 1

As the error message explains, in order to call Provider.of, you need to actually have a provider widget as an ancestor in that context. When you declare your provider widget, you need to declare the "create" field so that what is being provided is actually instantiated and associated with that context.

More info is under "usage" here:

https://pub.dev/packages/provider