Flutter State Management using ChangeNotifier and AnimatedBuilder - No Packages
Dashboard using `ChangeNotifier` and `AnimatedBuilder`.
State Management by using built-in Flutter classes. No Packages.
What is covered
In this project, you are going to take a look at:
How to use `ChangeNotifier` and `AnimatedBuilder` to selectively rebuild individual widgets for performance
State Management with build-in classes, no packages
The Problem:
Dashboard app needs to chart espresso, coffee, latte and total consumption
Drawing each section bar, the chart needs to refresh independently for performance
The Solution:
Use the `ChangeNotifier` and `AnimatedBuilder` to allow to selectively rebuild individual widgets for performance
ChangeNotifier and AnimatedBuilder
The `ChangeNotifier` and `AnimatedBuilder` allow to selectively rebuild individual widgets for performance
1. Create a class that extends `ChangeNotifier`
2. Add fields to contain data
3. Add methods to modify data and call the `notifyListeners()` method
4. Add the `AnimatedBuilder` widget in the widget tree to rebuild widgets selectively if the data changed
How it Works
`ChangeNotifier` and `ValueListenableBuilder` - The `ChangeNotifier` and `AnimatedBuilder` allow to selectively rebuild individual widgets for performance. Use fields to contain data defining them in the `ChangeNotifier`. Use methods to modify data and call the `notifyListeners()` method. Use the `AnimatedBuilder` widget in the widget tree to rebuild widgets selectively if the data changed.
GitHub: https://github.com/JediPixels/dashboa...
Twitter: / jedipixels
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Blog Article: https://jedipixels.dev/flutter-state-...
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