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I have four providers, that all provide the Instances of Challenge class, to the same Widget. They are different challenges, but I don't know how to differentiate between the providers, so i wondered, if it's possible to give names to the providers.

theundercoverartist
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  • Related: [Flutter - How does MultiProvider work with providers of the same type?](https://stackoverflow.com/q/56505413/3744182), [how to add multiple ChangeNotifierProvider in same type in Flutter](https://stackoverflow.com/q/61052629/3744182). – dbc Feb 03 '21 at 21:06

2 Answers2

2

Actually, you can't, this is the biggest drawback of provider, you can use riverpod instead, it's from the same author, but it has some advantages over a normal provider.

this is what the author of both provider and riverpod sais.

It makes the provider pattern more flexible, which allows supporting commonly requested features like: Being able to have multiple providers of the same type.

Adnan Alshami
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No. While you can have multiple providers sharing the same type, a widget will be able to obtain only one of them: the closest ancestor.

Instead, you must explicitly give both providers a different type.

Instead of:

Provider<Challenge>(
  create: (_) => 'Something',
  child: Provider<Challenge>(
    create: (_) => 'SomethingElse',
    child: ...,
  ),
),

Prefer:

MultiProvider(
providers: [
    Provider<ChallengeOne>(create: (_) => Something()),
    Provider<ChallengeTwo>(create: (_) => SomethingElse()),
    Provider<ChallengeThree>(create: (_) => AnotherThing()),
  ],
  child: someWidget,
)
Florian
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