flutter_progress_button

Package Overview

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flutter_progress_button is a customizable, open-source Material Design button for Flutter that supports various styles and progress states. Built with simplicity and flexibility in mind, it enables developers to easily integrate loading indicators, success states, and custom animations into buttons. The package is MIT-licensed and designed for seamless integration into any Flutter project. It enhances user experience by providing visual feedback during actions like form submissions or data fetching.

Use cases

Form submission with loading state
User authentication flows
Data saving operations
Interactive UI elements with feedback
Customizable button transitions

Key features

Supports loading and success states
Highly customizable appearance
Easy integration with Flutter
Material Design compliant
Animated transitions between states

Suitable for

Developers building interactive forms
Teams needing consistent button styling
Projects requiring visual feedback on actions
UI-heavy applications
Open-source contributors looking for lightweight components

Considerations

Limited platform-specific customization
No built-in support for non-Material themes
Requires manual handling of async logic
Not optimized for complex state machines
Depends on Flutter's Material package

Original README

Original README snapshot from the linked source repository. Visit the repository for the latest content.

flutter_progress_button is a free and open source (MIT license) Material Flutter Button that supports variety of buttons style demands. It is designed to be easy to use and customizable.

Get started

Depend on it

Add this to your package's pubspec.yaml file:

flutter_progress_button: '^1.0.0'

Install it

You can install packages from the command line:

$ flutter pub get

Alternatively, your editor might support flutter pub get.

Import it

Now in your Dart code, you can use:

import 'package:flutter_progress_button/flutter_progress_button.dart';

How to use

Add ProgressButton to your widget tree:

ProgressButton(
    defaultWidget: const Text('I am a button'),
    progressWidget: const CircularProgressIndicator(),
    width: 196,
    height: 40,
    onPressed: () async {
        int score = await Future.delayed(
            const Duration(milliseconds: 3000), () => 42);
        // After [onPressed], it will trigger animation running backwards, from end to beginning
        return () {
        // Optional returns is returning a VoidCallback that will be called
        // after the animation is stopped at the beginning.
        // A best practice would be to do time-consuming task in [onPressed],
        // and do page navigation in the returned VoidCallback.
        // So that user won't missed out the reverse animation.
        };
    },
),

More parameters:

ProgressButton({
    Key key,
    this.defaultWidget,
    this.progressWidget,
    this.onPressed,
    this.type = ProgressButtonType.Raised,
    this.color,
    this.width = double.infinity,
    this.height = 40.0,
    this.borderRadius = 2.0,
    this.animate = true,
}) : super(key: key);

Three types supported:

enum ProgressButtonType {
    Raised,
    Flat,
    Outline,
}

Source

Source code and example of this library can be found in git:

$ git clone https://github.com/jiangyang5157/flutter_progress_button.git

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