Why provider is used in Flutter?

One of the main reasons to prefer Provider over Statefulwidget s is that, using Provider , you will rebuild only the widgets that needs that value (the Consumers ) while the other will not be rebuilt . Instead when you call setState the whole build function of the widget will be called.

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What is a BlocProvider?

BlocProvider is a Flutter widget which provides a bloc to its children via BlocProvider. of<T>(context) . It is used as a dependency injection (DI) widget so that a single instance of a bloc can be provided to multiple widgets within a subtree.

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What is BLoC builder?

BlocBuilder is a Flutter widget which requires a bloc and a builder function . BlocBuilder handles building the widget in response to new states. BlocBuilder is very similar to StreamBuilder but has a more simple API to reduce the amount of boilerplate code needed.

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