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

# Introduction

At the moment, `fetchMovies()` is being called from the `MovieListing` widget’s `build` method. A network call is made every time the `build` method is called, which can be lots of network operations if the build is triggered often.

# Fetching movies at app startup

In this app, we want to fetch movies only once at the start of the application.

We can do so by calling `fetchMovies()` from `initState()` method.
 
## The `initState()` method

[`initState()`](https://api.flutter.dev/flutter/widgets/State/initState.html) method is called exactly once for each State object it creates, whereas, the `build()` method of the `Statefulwidget` is called several times during the app's lifetime.

```
  @override
  void initState() {
    super.initState();
    fetchMovies();
  }
```
 
The following code snippet shows the change we need to make to `_MoviesListingState` class :

```
class MoviesListing extends StatefulWidget {
 @override
 _MoviesListingState createState() => _MoviesListingState();
}

class _MoviesListingState extends State<MoviesListing> {

@override
void initState() {
 super.initState();
//movies are fetched only once at app’s start-up
 fetchMovies();
}


 @override
 Widget build(BuildContext context) {
fetchMovies(); //move this into initState method
...
 }
}
```


In this lesson, we cover removing redundant API requests 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)

Fetching Movies at App Startup

Introduction

Fetching movies at app startup