Let’s Understand Flutter Architecture and Its Elements in This Detailed Guide.

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Flutter architecture

A UI toolkit from Google, an SDK platform that uses a single codebase to develop web apps across Android, iOS, and desktop- that’s Flutter for you. One of the coolest software development frameworks, Flutter empowers businesses of all types and sizes to develop robust software solutions. 

Flutter’s many unique features and ability to develop high-performing apps have made it a hot topic among businesses and developers alike. Although there is a visible increasing demand for Flutter app development, many businesses fail to fully understand Flutter architecture, to begin with. 

Before initiating the Flutter app development, it’s crucial to take a few steps back and understand Flutter architecture and its nitty-gritty. Thus, this blog will outline the guide to understanding Flutter architecture, its core principles, and concepts. 

With this blog, we aim to help you understand the Flutter architecture in detail so that you can structure your Flutter application, build terrific widgets and screens, and maintain your app easily. So, ready to come along with us and learn Flutter architecture in detail? We are just about to begin. 

Let us start with a quick look through of layers in Flutter architecture 

Just like any other native application, Flutter consists of three layers. Here are those layers- 

Embedder layer 

An entry point is provided by a platform-specific embedder, which coordinates with the operating system to access services such as accessibility, rendering surfaces, and input. The embedder layer is written in platform-specific languages, such as Java and C++ for Android, Objective-C/objective- C++ for Android, iOS, macOS, Windows, and Linux. 

Engine layer 

The engine layer is written in C/C++. The engine layer takes care of the input, output, and network requests. It also handles the translation of rendering whenever a frame needs to be painted. Flutter uses Skia as its rendering engine and it is revealed to the Flutter framework through the Dart: UI. 

Framework layer 

The framework layer is the part where most developers can interact with Flutter. The Flutter framework provides a reactive framework written in Dart. The framework layer comprises the following- 

  • Rendering 
  • Widgets
  • Material and Cupertino 

Apart from the layers, Flutter architecture comprises the following components- 

Flutter widgets 

Widgets are an important concept of the Flutter framework. The interface and view of the application is affected by a user interface component which is the widget. In simpler words, widgets are the basic building blocks of a Flutter application’s UI. 

Moreover, Flutter provides a representation of part of a user interface which includes elements like shapes, text, graphics, animations, etc. Lastly, the Flutter widget is suitable for creating complex user interfaces. 

Gestures 

Due to a unique widget gesture detector, interaction is possible with Flutter widgets. GestureDetector is an invisible widget that can record user events with its child widgets such as tapping and dragging. 

Using GestureDetector, Flutter provides robust support for all types of gestures. Moreover, it also enables including an interactive feature into an existing widget. 

Widget states 

States are the behavior of an app at any given period. The state is information when it is first created and defines the properties of that widget. It synchronously reads when the widget is built and might change afterward in the life of the widget. 

There are two types of state widgets to build UI in Flutter. Let’s quickly go through them. 

Stateless widget- Stateless widgets are static which means once they initialize, they don’t change. Moreover, these widgets don’t keep any real-time information and do not have direct interaction with the app. 

Stateful widgets- Stateful widgets are dynamic and changing which means tmac,ahey can change with the given situation. Stateful widgets are capable of storing real-time data and using that data to update the user interface. 

Layers 

Layers are the core concept of Flutter architecture. The layers are divided into several categories depending upon the complexity of the app. The user interface of the application is the topmost layer which is particular to Android and Android and iOS platforms. Furthermore, all the Flutter widgets fall under the second layer. 

After these two layers, the next layer is the rendering layer which is responsible for rendering everything to the applications. 

After going through the main elements of Flutter architecture, we will address some mandatory questions. These questions will further help you to understand Flutter architecture, its function, and its impact better. So, let’s keep going. 

Guide to Flutter architecture

Why is using Flutter Architecture worth it? 

Let us address this question first. As we walked through the Flutter architecture above, let’s have a look at the benefits that make using Flutter architecture worth it. 

  • App development process and animation creation happen at a towering speed
  • User interface applications are the highlight of Flutter architecture 
  • Enables developing native applications for both Android and iOS
  • Flutter architecture contributes to developing highly performant Flutter apps
  • Dart supports multiple languages on a single platform 
  • Flutter architecture applications are popular for offering their great productivity 
  • The many widgets of Flutter architecture are easily customizable 

Ready to make the best use of Flutter Architecture? 

We assume you have made up your mind to use Flutter architecture for developing robust web apps after going through the detailed understanding and benefits of the architecture. Using Flutter architecture has more than just one perk. It helps in structuring your app and organizing the data to offer a great user experience. 

Thus, if you too want to take your app’s user experience to the best next level, understanding the core concepts of Flutter architecture will streamline developing next-gen Flutter applications. So, take the notes of what we discussed above and in case you feel stuck, ask our experts right away. 

We are Flutter developers with in-depth Flutter architecture know-how and can help you build excellent solutions with impactful features and functionality. 

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