Flutter Basics - Stateless and Stateful Widgets

In this video we look at the difference between the Stateless and Stateful Widgets. We look at using the setState() method and talk about performance when using Stateless and Stateful Widgets. At the end, we see how to extract a Widget as a WIDGET or a METHOD.

You can find my Dart playlist here:

[Break.]

I've been working through your course and I just wanna quickly say thanks, your teaching has helped me learn so much in just a couple of days!

[chris-malek]

Great stuff. I am going through the whole series. Thank you so much.

[Phrog]

Just making a comment for those following after me:

When you are naming your variables in the extract widget section, you may receive an error. The error will display something like "The argument type 'function' can't be assigned to the parameter type 'void Function()'.

This is because, to my knowledge, Johan's video isn't using Null Safety.

To get around this, instead use 'final void Function() onTap;' as opposed to 'final Function onTap;'

This should resolve the error.

[abhisheksharma]

Hello Sir... thanks for creating such great tutorial... I am not able to follow Extract Widget part. Its throwing exception. Please suggest... Thanks-

[dhoomketu]

I am getting an error which reads like the following : "setState or markNeedsBuild called during build".

Would be immensely glad if you could offer a solution to it. Thank you.

[nabukodonosor]

I love how you pronouce 'build' :) bold :)

[abhijeetkumarjha]

@Johan Jurrius
sir my text widgets inside the stateful widgets are not displaying after hot reload and even after restart

[obsessed]

What's the difference between @required and required ?

[sithenkosimenze]

Would you please upload the project folder to google drive

[hassanamin]

Followed the same tutorial but the no of count is not increasing

[AndyIvan]

This app would be a lot better with all of the 72 different genders.🤣🤣🤣