What is BlocConsumer Flutter?

BlocConsumer exposes a builder and listener in order react to new states . BlocConsumer is analogous to a nested BlocListener and BlocBuilder but reduces the amount of boilerplate needed. BlocConsumer should only be used when it is necessary to both rebuild UI and execute other reactions to state changes in the bloc.

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What is Bloc listener in Flutter?

BlocListener is a Flutter widget which takes a BlocWidgetListener and an optional bloc and invokes the listener in response to state changes in the bloc . It should be used for functionality that needs to occur once per state change such as navigation, showing a SnackBar , showing a Dialog , etc…

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What are events in BLoC Flutter?

BLoC uses the concept of Streams, or Reactive programming. This means that when a stream of events is created, subscribers can listen in on the stream of events . The subscribers are notified of new data when it is emitted into the stream. Widgets in Flutter use this stream for communication and sending data.

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