overridden_fields

Field overrides a field inherited from '{0}'.

The analyzer produces this diagnostic when a class defines a field that overrides a field from a superclass.

Overriding a field with another field causes the object to have two distinct fields, but because the fields have the same name only one of the fields can be referenced in a given scope. That can lead to confusion where a reference to one of the fields can be mistaken for a reference to the other.

The following code produces this diagnostic because the field f in B shadows the field f in A:

class A {
  int f = 1;
}

class B extends A {
  @override
  int f = 2;
}

If the two fields are representing the same property, then remove the field from the subclass:

class A {
  int f = 1;
}

class B extends A {}

If the two fields should be distinct, then rename one of the fields:

class A {
  int f = 1;
}

class B extends A {
  int g = 2;
}

If the two fields are related in some way, but can't be the same, then find a different way to implement the semantics you need.

Unless stated otherwise, the documentation on this site reflects Dart 3.8.0. Page last updated on 2025-05-08. View source or report an issue.