A Stream provides a way to receive a sequence of events . Each event is either a data event, also called an element of the stream, or an error event, which is a notification that something has failed. When a stream has emitted all its event, a single “done” event will notify the listener that the end has been reached.
Read moreWhy stream is used in Flutter?
Streams provide an asynchronous sequence of data . Data sequences include user-generated events and data read from files. You can process a stream using either await for or listen() from the Stream API. Streams provide a way to respond to errors.
Read moreWhat is stream subscription Flutter?
A subscription on events from a Stream . When you listen on a Stream using Stream. listen, a StreamSubscription object is returned. The subscription provides events to the listener, and holds the callbacks used to handle the events.
Read moreHow do you use streams in provider Flutter?
StreamsSelector is a Flutter widget which select streams from a provider and invokes the builder in response to signal emits in the selector stream. StreamsListener is a Flutter widget which takes a StreamsWidgetListener and a selector and invokes the listener in response to signal emits in the selector.
Read moreWhat is the stream in Flutter?
There are two types of streams in Flutter: single subscription streams and broadcast streams . Single subscription streams are the default. They work well when you’re only using a particular stream on one screen. A single subscription stream can only be listened to once.
Read moreWhat is initial data in stream provider?
initialData. The data that will be used to create the initial snapshot . Providing this value (presumably obtained synchronously somehow when the Stream was created) ensures that the first frame will show useful data.
Read moreWhat is difference between StreamBuilder and StreamProvider?
StreamProvider is a more complete solution than StreamBuilder : StreamBuilder is a widget that comes with Flutter, and rebuilds itself every time the stream gets updated.
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