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.
Read moreWhat does provider do in Flutter?
The answer is simple, and the power of the Provider package is in its simplicity: Providers allow to not only expose a value, but also create/listen/dispose it . When you place a Provider widget in your widget tree all the Childs of the Provider will have access to the values exposed by it.19 May 2021
Read moreWhat is widget tree and element tree in Flutter?
So that means that the widget tree has all the widget configuration and the element tree has all rendered widgets on the screen . There is one more tree named render tree, but the user doesn’t have to interact with it. Render tree is basically a low-level layout, painting system that inherits from the render objects.14 May 2021
Read moreWhat are the trees available in Flutter?
Under the hood, Flutter uses 3 instances of trees. Yes, you guessed it, these are: Widget tree, Element tree and Render Object tree . Each one of them has slightly different purposes, but combined together they allow for fast UI rendering and great performance.
Read moreHow do you find the widget tree Flutter?
Inspecting a widget Click any widget in the app’s UI ; this selects the widget on the app’s screen, and scrolls the widget tree to the corresponding node. Toggle the Select Widget Mode button again to exit widget select mode. When debugging layout issues, the key fields to look at are the size and constraints fields.
Read moreWhat is a stateless widget in flutter?
According to Flutter’s official website, which is the very first resource for learning about anything Flutter, ” a Stateless widget is a widget that describes part of the user interface by building a constellation of other widgets that describe the user interface more concretely “.
Read moreHow do I refresh a specific widget in flutter?
1 Answer. You will need transform your “Container” in a custom statefull widget and then make his state management by your needs. Take a look at BLoC pattern here . With this pattern you will be able to update a specific widget in all widget tree without recreate all widgets.
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