loadable_buttons

A Flutter package that provides enhanced buttons with built-in loading states and async functionality.

Features

• 🔄 Built-in loading states for:
  • ElevatedButton -> AsyncElevatedButton
  • FilledButton -> AsyncFilledButton
  • TextButton -> AsyncTextButton
  • OutlinedButton -> AsyncOutlinedButton
  • IconButton -> AsyncIconButton
  • FloatingActionButton -> AsyncFloatingActionButton
• ⚡ Async callback support
• 🎨 Multiple transition animations
• 🎯 Icon support with customizable alignment
• 📱 Maintains all standard properties
• ✨ Customizable loading indicators

Usage

Installation

Add the following to your pubspec.yaml or run:

flutter pub add loadable_buttons

Importing

import 'package:loadable_buttons/loadable_buttons.dart';

Basic Usage

AsyncElevatedButton(
  onPressed: () async {
    // Your async operation here
    await Future.delayed(const Duration(seconds: 2));
  },
  child: const Text('Click Me'),
);

Custom Loading Child

AsyncElevatedButton(
  onPressed: () async {
    await Future.delayed(const Duration(seconds: 2));
  },
  child: const Text('Submit'),
  loadingChild: const Text('Loading...'),
);

Transition Types

The package supports three types of transitions:

1. Stack (Default) : Maintains the size of the button while loading

AsyncElevatedButton(
  // transitionType: TransitionAnimationType.stack,
  onPressed: () async => await yourAsyncFunction(),
  child: const Text('Stack Transition'),
);

2. AnimatedSwitcher : Animates the size of the button while loading

AsyncElevatedButton(
  transitionType: TransitionAnimationType.animatedSwitcher,
  onPressed: () async => await yourAsyncFunction(),
  child: const Text('AnimatedSwitcher Transition'),
);

3. CustomBuilder : Allows you to define your own custom transition

AsyncElevatedButton(
  transitionType: TransitionAnimationType.customBuilder,
  onPressed: () async => await yourAsyncFunction(),
  child: const Text('Custom Transition'),
  loadingChild: const Text('Loading...'),
  customBuilder: (bool loading, Widget child, Widget? loadingChild) {
    return AnimatedSwitcher(
      duration: const Duration(milliseconds: 500),
      curve: Curves.easeInOut,
      child: loading
          ? loadingChild!
          : child,
    );
  },
);

Additional Features

• Customize animation duration
• Control minimum opacity during loading state
• Full access to ElevatedButton styling
• Manual loading state control
• Icon alignment customization

Properties

Property	Type	Description
onPressed	FutureOr<void> Function()?	The callback that is called when the button is tapped
child	Widget	The primary content of the button
loadingChild	Widget?	Widget to show during loading state
loading	bool	Manual control of loading state
transitionType	TransitionAnimationType	Type of loading animation
animationDuration	Duration	Duration of the loading animation
minimumChildOpacity	double	Minimum opacity of child during loading

Compatibility Note

This package is designed and tested for the latest Flutter stable version. Due to limitations in older Flutter versions regarding parameter handling, using this package with older versions might lead to unexpected behavior or limitations. Alternatively, since the package is MIT licensed, you can copy the relevant code into your project and adapt it for older versions.