non_final_field_in_enum

Enums can only declare final fields.

The analyzer produces this diagnostic when an instance field in an enum isn't marked as final.

The following code produces this diagnostic because the field f isn't a final field:

enum E {
  c;

  int f = 0;
}

If the field must be defined for the enum, then mark the field as being final:

enum E {
  c;

  final int f = 0;
}

If the field can be removed, then remove it:

enum E {
  c
}

除非另有说明，文档之所提及适用于 Dart 3.7.3 版本，本页面最后更新时间: 2025-05-08。 查看文档源码 或者 报告页面问题。