Delve into Flutter's UI framework to build high-quality Android apps, from creating contact profiles to enhancing them with themes and API integration, culminating in app publication.

Flutter is Google’s mobile UI framework used for crafting high-quality native interfaces on iOS and Android. This course focuses on building applications for the Android platform.

You’ll start by exploring the intricacies of Flutter and work your way up to implementing a contact profile page for an Android address book.

In the latter half of the course, you’ll learn to work with Flutter themes to spruce up the contact profile app you created. To round out your Flutter experience, you’ll also practice fetching data from a remote Application Programming Interface (API).

You’ll put into practice what you learn using live coding environments embedded within the course. By the time you’re done, you’ll be ready to create your own Android app and publish it to the Google Play Store.

Salahaddin Mohammed

I completed the course "Beginning Flutter: Android Mobile App Development" at the Educative platform. I have easily understood the course because of your great explanation. I want to thank you really!

Thank you letter from a student.

Beginning Flutter: Android Mobile App Development

# Stateless widget

* A [`Stateless`](https://api.flutter.dev/flutter/widgets/StatelessWidget-class.html) widget is immutable. Once it's created, it can't be changed. It doesn't preserve its state.
* Stateless widget is drawn only once, and it can not be redrawn at a later time.
* Stateless widget's `build()` method is called only once.


Let's use the [`Container`](https://api.flutter.dev/flutter/widgets/Container-class.html) widget to understand creating a custom `StatelessWidget`.

> **Container Widget:** A container widget is a convenience widget that combines common painting, positioning, and sizing widgets.

The following code snippet demonstrates how a `Container` widget is created in a stateless manner. This widget is created only once. 
```
class MyStatelessWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container();
  }
}
```

* Few examples of `Stateless` widgets are below. Once they are created, their value can’t be changed. If the value of the stateless widget needs to be changed then new widgets need to be created with the updated value. 

* Some of the examples of `Stateless` widgets are below. `Stateless` widgets don't keep track of their state.
  - [`Text`](https://api.flutter.dev/flutter/widgets/Text-class.html) widget: It contains the immutable string of letters. 
  - [`Icon`](https://api.flutter.dev/flutter/widgets/Icon-class.html) widget: The icon widget is immutable and not meant for interaction.
  - [`Card`](https://api.flutter.dev/flutter/material/Card-class.html) widget: It is a material design card which is used to show relevant information.

In this lesson, stateless & stateful widgets are discussed in detail.

Introduction

Hello Flutter !

Build your Contact Profile Page

Flutter Themes

MovieApp: Fetching Data from REST API

Where to Go from Here

Appendix: Installation & Setting up Flutter (Optional)

Stateless & stateful widgets

Stateless widget