Flutter Provider: Introduction
Why Stack Overflow recommends it
Stack Overflow users link it when answering Flutter state management and data-passing questions and want to point askers to a beginner-friendly introduction to Provider.
Recommended by 2 people across 2 different months, 2019 to 2021.
What it is
A roughly 10-minute beginner tutorial by Andrea Bizzotto introducing Flutter's Provider package. It covers what Provider is, how to install it, and how to use it for dependency injection to set up multiple app flavors, with separate entry points and VS Code configurations.
What people said
Recommends serg · 2019-12 · Stack Overflow · on “Passing data between screens in Flutter”
Answers above are useful for a small app, but if you want to remove the headache of continuously worrying about a widgets state, Google presented the Provider package. [LINK] Have a look into that one, or watch these videos from Andrea Bizzotto: [LINK] // Provider: The Essential Guide [this video] // Provider: Introduction Learn how to use the Provider package, and you are set for life :)
Recommends sameer kashyap · 2020-10 · Stack Overflow · on “Error: Cloud not find the correct Provider<List<Brew>> above this BrewList Widget”
This is because there is no Provider<List<Brew>> above BrewList widget. Typically moving this above MaterialApp should solve the problem. But, in this case, there are just a lot of flaws in your code, not just with respect to flutter but generally. Create a ChangeNotifier if you are using a provider, you might as well use ChangeNotifier to manage state. Because you are using Brew to wrap only one value, which isn't the best way to use a class. So better move all the logic in main.dart to a ChangeNotifier So what you should instead be doing is, class BrewNotifier with ChangeNotifier{ final int stepCountValue; Brew({ this.stepCountValue }); List<Brew> _brewlist = []; get brewList => _brewlist;
Cites user15782390 · 2021-04 · Stack Overflow · on “Save values of variables while navigation in Flutter”
I am not sure if you specifically you need it to reset when the app relaunches or not but if it is fine if the value is preserved when you relaunch the app then here are a few options. Either way, you can reset the value when the app launches manually by setting it back to 0. The first and simplest way is to use the answer in this comment [LINK] . If you have both widgets in an IndexedStack (read more here [LINK] ) and then have the button change the stack index that would work but you would lose the benefit of page transition animations and this is a less performant option as your app grows because flutter has to run both widgets at the same time even if one isn't being used. A second more