The argument type 'T Function<T>(ProviderListenable<T>)' can't be assigned to the parameter type 'Reader<dynamic, dynamic>

Question

im trying to declare a provider for addmealChangenotifier but i notice on ref.read i keep on getting the erro cant be assigned to the parameter type Reader how can i go about fixing this error

final addMealProvider =
    ChangeNotifierProvider((ref) => AddMealChangeNotifier(ref.read ));

class AddMealChangeNotifier extends ChangeNotifier {
  final Reader _reader;
  AddMealChangeNotifier(this._reader);

Answer 1

you can try it this way:

final addMealProvider =
    ChangeNotifierProvider((ref) => AddMealChangeNotifier(ref));

// or use tear-off
final addMealProvider = ChangeNotifierProvider(AddMealChangeNotifier.new);

class AddMealChangeNotifier extends ChangeNotifier {
  final Ref _ref;
  AddMealChangeNotifier(this._ref);

Also, you can define a custom Reader (not recommended):

typedef Reader = T Function<T>(ProviderBase<T> provider);

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