In this article I want to explain what is Fluter, why should we care and how does it work. “ Flutter is a mobile app SDK for building high-performance, high-fidelity, apps for iOS and Android, from a single codebase.” — flutter.io is open source and has been developed by . Flutter Google The first version of Flutter was known as “Sky” and ran on the Android operating system. It was unveiled at the 2015 Dart developer summit — Wikipedia It has been released to the world in May 2017 in a stable release Alpha. Its primary goal is to enable developers to deliver high-performance apps that feel natural on different platforms. Why should we care of Flutter ? Flutter is used by Google and others in production, works with and other mobile app SDKs, and is open source. Firebase For me this can be the only reason, but there is more. We can do more with less code, using all the feature of Dart language We can use Flutter to quickly prototype our app We can create beautiful, highly-customized user experiences using built in set of Material Design and iOS flavor widget Flutter features Flutter comes with a lot features, let’s deep dive on the main 3. Fast development When developing with flutter, you can use a feature called hot reload. Hot reload build and run your projects faster than a second. This actually helps develop fast and resolve bugs faster. Reactive framework Flutter comes with a modern and reactive framework with a rich set of widget and an API for animation, gestures, 2D and more. Native feature access Flutter let you access to the native platform SDK of Android and iOS using your Java/Kotlin of ObjC/Swift piece of code. Core Principles Flutter is defined around 3 principles Layer cakes are delicious Flutter is organized around layers. Each layer is build upon the previous. Fron the diagram we can see the low level part of Flutter is an Engine built in C++. It provides low-level support using Google’s graphics library. rendering Skia The high-level part of the diagram is the Framework written in Dart. It provides libraries to handle animation, gestures, rendering, widgets and more. With all this layer the developer can do more with less code by using elements on the top or go down to customize some behavior of its app. Everything’s a Widget In flutter everything is a Widget. Widget is the basic building block we use to create the UI of Flutter app. Each widget is an immutable declaration of part of the user interface. — flutter.io All the widget of a Flutter app form a hierarchy where a widget is a composition of other widgets and each widget inherits properties from its parent Composition > inheritance To create a powerful widget with properties of other widgets, we compose our widget of those widgets. Conclusion This article is my attempt to give a simple Introduction to Flutter. If you want to try Flutter, I invite you to learn more here on the official . website I also invite you to the flutter community: Live chat with Flutter engineers and users Discuss Flutter, best practices, app design, and more on our mailing list Resourses flutter.io Flutter (software) — Wikipedia Thank for reading and until then my friend! may the {code} be with you Originally published at Developer Journey .
