Use the ChangeNotifierProvider.value constructor

[miDeb]

According to the provider documentation:

If you already have an object instance and want to expose it, you should use the .value constructor of a provider.

Failing to do so may call the dispose method of your object when it is still in use.

DO use ChangeNotifierProvider.value to provide an existing ChangeNotifier.

MyChangeNotifier variable;

ChangeNotifierProvider.value(
  value: variable,
  child: ...
)

DON'T reuse an existing ChangeNotifier using the default constructor

MyChangeNotifier variable;

ChangeNotifierProvider(
  create: (_) => variable,
  child: ...
)