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What is Flutter Technology and How it works?

Flutter Technology

Flutter is an open-source UI (User Interface) software development framework created by Google. It is used for building natively compiled applications for mobile, web, and desktop from a single codebase. Flutter is known for its fast development and expressive and flexible design, making it a popular choice among developers.

How Flutter Technology Works?

Dart Programming Language

Flutter applications are primarily developed using the Dart programming language, which is also created by Google. Dart is an object-oriented, class-based language that is used to write the application logic and manage the overall structure of the Flutter app.

Widgets

Flutter is built around the concept of widgets. Widgets are the fundamental building blocks of a Flutter application. Everything in Flutter, from the simplest UI elements to the entire app itself, is a widget. Widgets can be structural (like rows and columns) or stylistic (like buttons and text). Flutter provides a wide variety of pre-built widgets to help you create complex user interfaces.

Reactive Framework

Flutter uses a reactive programming paradigm. When the state of a widget changes, it triggers a rebuild of the widget or its subtree. This means that Flutter applications are constantly redrawing parts of the UI in response to changes in the underlying data or user interactions. This reactive approach makes it easy to create dynamic and interactive user interfaces.

Single Codebase

One of the key advantages of Flutter is that you can use a single codebase to develop apps for multiple platforms, including iOS, Android, web, and desktop. Flutter achieves this through a combination of platform-specific widgets and a rendering engine that draws the UI. Developers write code in Dart, and Flutter handles the translation of Dart code into platform-specific code for each target platform.

Skia Graphics Engine

Flutter uses the Skia graphics engine for rendering, which is a highly efficient and fast 2D graphics library. This allows Flutter to provide consistent and smooth graphics across different platforms.

Hot Reload

One of the most beloved features of Flutter is its "hot reload" capability. Developers can make changes to the code, and these changes are reflected in the app almost instantly without requiring a full application restart. This greatly speeds up the development process and makes it easier to experiment and iterate on the user interface.

Access to Native Features

Flutter provides a rich set of libraries and plugins that allow developers to access native device features and APIs. This enables developers to integrate platform-specific functionality seamlessly into their Flutter apps.

Extensive Ecosystem

Flutter has a rapidly growing ecosystem of packages and plugins created by the community, which makes it easy to add various features and functionality to your applications.

In summary, Flutter technology allows developers to build cross-platform mobile, web, and desktop applications using a single codebase. It leverages the Dart programming language, a reactive framework, and a wide range of pre-built widgets to create rich, visually appealing, and highly performant applications. The use of Skia for rendering and the hot reload feature for rapid development are some of the key strengths of Flutter.

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