Flutter Progress Bar

A Flutter progress bar is a graphical user interface (GUI) element used in Flutter applications to visually indicate the progress of a task or operation. It provides users with real-time feedback on the completion status of a process, such as file downloads, form submissions, or any other task that takes time to complete.

In the below PDF we discuss about Progress Bar in detail in simple language, Hope this will help in better understanding.

Types of Progress Bar in Flutter:

Flutter provides various types of progress bars, each catering to different use cases and design preferences. Some common types include:

  1. Determinate Progress Bars: These progress bars indicate the exact percentage of completion of a task. They are ideal for scenarios where the duration of the task is known, such as downloading a file or installing an application update.
  2. Indeterminate Progress Bars: Unlike determinate progress bars, indeterminate progress bars do not display the exact progress percentage. Instead, they animate continuously, indicating that a process is ongoing without specifying how long it will take. Indeterminate progress bars are suitable for tasks with uncertain durations, such as fetching data from a server.
  3. Circular Progress Indicators: Circular progress indicators, as the name suggests, represent progress in a circular format. They are visually appealing and are often used in scenarios where space is limited or where a circular design complements the overall aesthetics of the application.
  4. Linear Progress Indicators: Linear progress indicators display progress in a linear fashion, typically in the form of a horizontal bar. They are versatile and can be customized to match the design language of the application.

Progress Bar Example:

Implementing progress bars in Flutter is straightforward, thanks to the rich set of widgets and libraries available. Let’s take a look at a basic example of how to create a determinate progress bar:

import 'package:flutter/material.dart';

void main() {

class MyApp extends StatelessWidget {
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: Text('Determinate Progress Bar'),
body: Center(
child: CircularProgressIndicator(
value: 0.5, // Set the progress value here (0.0 to 1.0)


In conclusion, Progress bars play a crucial role in enhancing user experience by providing feedback on the completion status of tasks. In Flutter, developers have access to a diverse range of progress bar types and customization options, allowing them to tailor the user interface to meet specific requirements. By incorporating progress bars effectively into Flutter applications, developers can create intuitive and engaging experiences for users, ultimately leading to higher satisfaction and retention rates.

Related Question

A Flutter Progress Bar is a visual element used in Flutter applications to indicate the progress of a task or operation. It typically consists of a horizontal or circular bar that fills up gradually as the task progresses.

In Flutter, you can create a Progress Bar using widgets such as LinearProgressIndicator for horizontal bars or CircularProgressIndicator for circular ones. These widgets are part of the Flutter SDK and can be customized to fit the design requirements of your app.

To display determinate progress, set the value property of the LinearProgressIndicator or CircularProgressIndicator to a value between 0.0 and 1.0, indicating the percentage of completion. For example, value: 0.5 would represent 50% progress.

Yes, Flutter allows extensive customization of Progress Bars. You can adjust properties such as color, height, animation duration, and shape to match the visual style of your app. Additionally, you can use custom painter classes to create entirely unique progress indicators.

For tasks with an unknown duration, you can use an indeterminate Progress Bar. In Flutter, set the value property to null for LinearProgressIndicator or don’t provide a value for CircularProgressIndicator. This will animate the progress bar indefinitely, indicating ongoing activity without specifying the exact progress.


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