Framework

Why is the build() method on State, rather than StatefulWidget?
Where is Flutter’s markup language? Why doesn’t Flutter have a markup syntax?
My app has a Debug banner/ribbon in the upper right. Why am I seeing that?
What programming paradigm does Flutter’s framework use?

Project

Where can I get support?
How do I get involved?
Is Flutter open source?
Which software license(s) apply to Flutter and its dependencies?
How can I determine the licenses my Flutter application needs to show?
Who works on Flutter?
What are Flutter’s guiding principles?
Will Apple reject my Flutter app?

Introduction

This page collects some common questions asked about
Flutter. You might also check out the following
specialized FAQs:

Web FAQ

Performance FAQ

What is Flutter?