Welcome to our comprehensive Flutter UI Components Guide! In this article, we’ll explore the essential building blocks of Flutter’s powerful UI framework, from widgets and layouts to interactive elements that bring your app to life. Whether you’re a beginner or an experienced developer, understanding these core components is crucial for creating dynamic and visually appealing applications. Get ready to enhance your development skills and transform your app design with our in-depth guide on Flutter UI components! Some of the major UI components to be used while working on a flutter application includes as below:

Widgets

In Flutter, everything is a widget. The view of the UI completely depends upon the widgets used to build the application. Widgets can be Stateless and Stateful.

Stateless Widgets - These are the widgets whose state doesn’t change like a button or an image. As the name states, these doesn’t change their state when an action is performed on the UI.

StatefulWidgets  - These are the widgets those can hold their current state. Instead of having a widget build method, a Stateful widget has a State build method which calls each time we explicitly call setState.

Container

Container class in flutter is the most convenient widget that will combines positioning, and sizing of widgets. It is a box model that allows customization of its decoration, padding, margin etc. Containers can be considered as a fundamental building block used to create various UI elements.

Scaffold

This is a top-level container that holds the structure of the visual interface, which includes AppBar, Drawer, BottomNavigationBar, and FloatingActionButton. It will occupy the available space. Scaffold will provide a framework to implement the basic material design layout of the app.

return Scaffold(

      appBar: AppBar(

        title: Text('Dialog Example'),

      ),

      body: Center()

)

MaterialApp

The MaterialApp widget will provide a wrapper around other Material Widgets. Also we can access all the other components and widgets provided by Flutter SDK. This is a predefined class or widget in a flutter

class MyApp extends StatelessWidget {

  @override

  Widget build(BuildContext context) {

    return MaterialApp(

      home: HomeScreen(),

    );

  }

}

Column and Row

Widgets can either be  arranged vertically (Column) or horizontally (Row). They're often used to structure the layout of an application.

Row(

  children: <Widget>[

    Text('1'),

    Text('2'),

  ],

)

Column(

  children: <Widget>[

    Text('3'),

    Text('4'),

  ],

)

Stack

Stack is a component commonly used for creating complex layouts. This overlays its children oon the top of each other

Stack(

        alignment: Alignment.center, // Center the items within the Stack

        children: <Widget>[

          Container(

            width: 200,

            height: 200,

            color: Colors.blue,

          ),

])

Drawer

This is a slide-in menu that provides navigation options to the user, usually accessible from the left side of the screen. It provides access to different destinations and functionalities. To be able use the app drawer you need to import the material component package that is ” package: flutter/material.dart.” App Drawer has maily three section which is header, body, and footer.

AppBar

Typically  a material design appbar appears at the top of the screen and contains options like the app's title, actions etc.

 Scaffold(

        appBar: AppBar(

          title: Text('Flutter Container Example'),

        ),

        body: MyContainer(),

      ),

TextField

A TextField widget is a widget that allows the user to input text, often used for forms and user input.

TextField(

  decoration: InputDecoration(

    hintText: 'Enter your details',

  ),

);

Dialog

This widget displays a dialog with a title and content. It's commonly used to display any information or requesting user confirmation.

Image

A Image widget in Flutter is basically used to display images. They can be local assets or images from the internet

Image.network('your url')

Above listed components are just some of the many UI components and widgets that Flutter provides. We can combine and customize these widgets to create a wide range of user interfaces for our apps.

Flutter provides a diverse set of UI components and widgets  that  makes our  crafting versatile and visually appealing user interfaces for our applications. By skillfully combining and customizing these widgets, you can design a wide array of user experiences to meet the specific needs of your apps. These widgets helps us to create everything from basic text and images to complex navigation systems, interactive forms, animations etc., giving us the flexibility to bring our app's design to life.