What difference between stateless and stateful widgets?

Question

I am learning Dart/flutter and trying to understand how Widgets system works. But I can\'t understand what difference between stateless and stateful widgets? For example I h

Answer 1

According to flutter.io:

Stateless widget

Stateless widgets are immutable, meaning that their properties can’t change — all values are final.

Here is doc.

Stateful widget

Stateful widgets maintain state that might change during the lifetime of the widget. Implementing a stateful widget requires at least two classes: 1) a StatefulWidget class that creates an instance of 2) a State class. The StatefulWidget class is, itself, immutable, but the State class persists over the lifetime of the widget.

As a example if you want to change text in text widget when a button press, you have to use StatefulWidget and it will let you to change the state of a variable.

But in StatelessWidget you cannot do that because it doesn't keep state.

Read more from doc.

This tutorial will help anyone who trying to understand these two.