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Flutter & Dart · Component

FutureBuilder

FutureBuilder builds a widget from the latest snapshot of a Future. Create the Future before build, then use the snapshot to render loading, data, or error states.

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Syntax

const FutureBuilder<T>({Key? key, required Future<T>? future, T? initialData, required AsyncWidgetBuilder<T> builder})

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  • AsyncSnapshot
  • AsyncWidgetBuilder
  • ConnectionState
  • StreamBuilder
  • State.initState
  • State.didUpdateWidget
  • State.didChangeDependencies

Source: FutureBuilder class - widgets library - Dart API. Checked 2026-11-03.