How to manage application states using inherited widgets | Workshop

Learn how to use inherited widgets to implement your own state management solutions. With a sample flutter application, we go through the steps needed to implement a state management system.

This lab requires knowledge of building the Flutter UI using basic stateless and/or stateful widgets.

Resources:

Speaker: Chun-Heng Tai

Watch more:

#GoogleIO #Flutter

product: Flutter - General; event: Google I/O 2021; fullname: Chun-Heng Tai; re_ty: Livestream;

[codewithmaher]

10:32 Start
13:46 AppState completed
19:35 AppStateScope implemented
21:03 AppStateWidget start
26:40 AppStateWidget implemented
28:46 Use it in you app

I hope this helps 👍

[DebabrataAcharya]

Dude, I need to get a new pair of eyes after this video.

[sanderroest]

Great video if you want to build a package that needs state without introducing a dependency on another state management package like provider or riverpod.

[lucasmullner]

Easy to understand and well structured workshop. Thanks a lot for these valuable insights on state management in Flutter!

[prashantmaharana]

Extremely wanted this workshop, thankyou Flutter 💜

[markh]

Such a valuable topic, and an excellent example-walkthrough. Thank you!

[manishkl]

it will be very cool and important to have comments // for each line so even a new comer can read and follow through

[haroldpepete]

please, next time make zoom into the code to see it better, i tried to see the video on my phone and it was a bad desicion

[jilmarxa]

Is InheritedNotifier more efficient with the same pattern? Create a custom valueNotifier around the data class and without the StatefulWidget that exposes the APIs. That would be my guess I'm not sure yet, though..

[nobutaka]

How does this compare to using Riverpod, advantages and disadvantages?

[CaptainOgres]

I really hope the dartpad code sample could be updated with more intuitive comments and walk through to decoupled the excercise from this video.

[building_in_public]

Velocityx package implements the same functionality in simplier form and the bioler plate code is also less, but it is also good to know the behind the scenes

[zohaibmunir]

How can i access the source code of this exercise? Please help me.

[panchoyarco]

Please explain the reason for using two dots in "_itemsInCart..add(id)" within _handleAddToCart(String id).

The same question applies to "_itemsInCart..remove(id)" within _handleRemoveFromCart(String id).

Using only one dot causes an error: A value of type 'bool' can't be assigned to a variable of type 'Set<String>'

Fine, but WHAT, exactly and precisely, is the meaning of the two dots in this context?

Is this a shortcut for some kind of a cast?

Obvioously, there's something VERY meaningful going on here. Unfortunately, searching the Dart documentation doesn't produce any meaningful information for "two dots" (which are used in cascades with this Note: Strictly speaking, the “double dot” notation for cascades isn’t an operator. It’s just part of the Dart syntax.)

So, the “double dot” notation for cascades inhabits a different context than the context of your _handleAddToCart(String id) and _handleRemoveFromCart(String id).

Please clarify.

Thanks.

[haroldpepete]

I have a question, in minute 35:02 when you pass context as argument to _buildProductTile function, the context if avaliable in entire widget, you don't need to pass as argument, i'm wrong or not?

[stepanzarubin]

What I don't understand is that why need first build an app the way it is not practical. But thank you :)

[Lgwin]

переводчик яндекс браузера его НЕ ПОНИМАЕТ ! УВОЛЬТЕ ЕГО