The widget build method: DOs and DON'Ts

Did you know?

The widget build method can potentially be called in every frame and should not have any side effects.

Here's a list of DOs and DON'Ts. 👇

The build method: DOs and DON'Ts
The build method: DOs and DON'Ts

Conversely, you can run side effects inside widget callbacks, since these are triggered by separate events that are not part of the rendering phase.

Do these inside widget callbacks
Do these inside widget callbacks

I've written a complete article about side effects.

If you got this wrong before, it will help you. 👇

Happy coding!

Want More?

Invest in yourself with my high-quality Flutter courses.

Flutter Foundations Course

Flutter Foundations Course

Learn about State Management, App Architecture, Navigation, Testing, and much more by building a Flutter eCommerce app on iOS, Android, and web.

Flutter & Firebase Masterclass

Flutter & Firebase Masterclass

Learn about Firebase Auth, Cloud Firestore, Cloud Functions, Stripe payments, and much more by building a full-stack eCommerce app with Flutter & Firebase.

The Complete Dart Developer Guide

The Complete Dart Developer Guide

Learn Dart Programming in depth. Includes: basic to advanced topics, exercises, and projects. Fully updated to Dart 2.15.

Flutter Animations Masterclass

Flutter Animations Masterclass

Master Flutter animations and build a completely custom habit tracking application.