Flutter Animation Progress Bar

This colorful Flutter widget package aims to show an animation progress bar in reactive style. It also supports both vertical and horizontal bar.

Flutter Create Contest

This package is also a submission to Flutter Create contest. The basic rule of this contest is to measure the total Dart file size less or equal 5KB.

After unzipping the compressed file, run following command to update dependencies:

flutter packages get

To evaluate the total size of all Dart files:

find . -name "*.dart" ! -name "*test*"  | xargs cat | wc -c

To evaluate only the package Dart code:

find . -name "*.dart" ! -name "*test*" ! -path "*example*"  | xargs cat | wc -c

To run simple example app with a total size of dart code less or equal 5KB:

cd example
flutter clean
flutter run

Hot restart app with "R" to replay the animation

To run the full example app:

cd example
mv lib/main.dart tmp && mv lib/main.dart.bk lib/main.dart && mv tmp lib/main.dart.bk
flutter clean
flutter run

Using built-in float action buttons to change value and see the effect

Getting Started

In order to use this package, do import

import 'package:flutter_animation_progress_bar/flutter_animation_progress_bar.dart';

Basic implementation can be done like below code:

import 'package:flutter/widgets.dart';
import 'package:flutter_animation_progress_bar/flutter_animation_progress_bar.dart';

void main() {
  runApp(
    Center(
        child: FAProgressBar(
      currentValue: 80,
      displayText: '%',
    )),
  );
}

Example App

You can find more examples from Example App

API

In this table, you can find all attributes provided by this package:

Attribute	Default value	Description
currentValue	0	Set the current value for progress bar. This value should be in stateful so that whenever setState() has been called, the progress bar will trigger an animation from latest currentValue to new currentValue
maxValue	100	Max value to be displayed as progress bar. Current value can be greater than max value
size	30	The bar height if direction in Axis.horizontal. The bar width if direction in Axis.vertical
animatedDuration	const Duration(milliseconds: 300)	Set the duration for an animation cycle
direction	Axis.horizontal	The bar can be in Axis.horizontal or Axis.vertical direction
verticalDirection	VerticalDirection.down	With vertical direction, the bar can be VerticalDirection.up or VerticalDirection.down direction
borderRadius	8	Set the bar border radius
border	null	Set the bar border style by BoxBorder
backgroundColor	const Color(0x00FFFFFF)	Set the bar background color
progressColor	const Color(0xFFFA7268)	Set the bar progressing color
progressGradient	null	Set the bar progressing gradient. Overrides progressColor
changeColorValue	null	Set a value that progress color should be changed to [0---blue----[70]-red-100]
changeProgressColor	const Color(0xFF5F4B8B)	Color that progressing color will be changed to, whenever currentValue greater than changeColorValue
displayText	null	Text to display belonging with currentValue. Examples: % -> 20% °F -> 80°F
displayTextStyle	...	TextStyle of displayText

Objects

class FAProgressBar {

  final double currentValue;
  final double maxValue;
  final double size;
  final Duration animatedDuration;
  final Axis direction;
  final VerticalDirection verticalDirection;
  final double borderRadius;
  final BoxBorder border;
  final Color backgroundColor;
  final Color progressColor;
  final Gradient progressGradient;
  final int changeColorValue;
  final Color changeProgressColor;
  final String displayText;
  final TextStyle displayTextStyle;
}

Feedback

Feel free to leave any feedback for helping support this package 🍻