flutter_easy_messages 0.0.2

A simple and customizable Flutter package for displaying toast notifications and snackbars. Features smooth animations, multiple positioning options, message types, and flexible behavior modes.

🍞 Flutter Easy Messages

A simple, elegant, and highly customizable Flutter package for displaying toast notifications and snackbars. Features smooth animations, multiple positioning options, message types (error, success, info, warning), and flexible behavior modes (queue or replace).

✨ Features

• 🍞 Toast Notifications - Overlay-based notifications with smooth animations
• 📱 Responsive Snackbars - Automatic sizing for mobile, tablet, and desktop
• 🎨 Message Types - Pre-styled messages (Error, Success, Info, Warning)
• 📍 9 Position Options - Top, center, or bottom with left/center/right alignment
• ⚡ Smooth Animations - Entry, exit, and pulse animations with customizable timing
• 🔄 Queue & Replace Modes - Control how multiple messages are handled
• 🎯 Deduplication - Prevent duplicate messages from appearing
• 📲 Responsive Design - Automatic layout adjustments for all screen sizes
• ♿ Accessibility Support - Screen reader integration with semantic labels
• ⚙️ Highly Configurable - Global config with per-message overrides

🎬 Demo

Message Types & Colors	Snackbars
Toast Positions (9 Options)	Custom Styling & Icons
Animations & Durations

📦 Getting Started

Installation

Add to your pubspec.yaml:

dependencies:
  flutter_easy_messages: ^0.0.1

Run:

flutter pub get

Quick Start (No Setup Required!)

import 'package:flutter_easy_messages/flutter_easy_messages.dart';

// Show a success toast
showAppToast(context, 'Success!', messageType: MessageType.success);

That's it! 🎉

📖 Usage

🍞 Toast Notifications

Preset Message Types

// Success
showAppToast(context, 'Operation successful!', messageType: MessageType.success);

// Error
showAppToast(context, 'Something went wrong', messageType: MessageType.error);

// Info
showAppToast(context, 'This is an info message', messageType: MessageType.info);

// Warning
showAppToast(context, 'Please be careful', messageType: MessageType.warning);

Custom Styling

showAppToast(
  context,
  'Custom message',
  backgroundColor: Colors.purple,
  duration: Duration(seconds: 3),
  position: MessagePosition.topCenter,
  borderRadius: 20,
  icon: Icon(Icons.favorite, color: Colors.white),
  maxLines: 2,
  offset: Offset(0, 10),
);

Behavior Modes

// Replace (default) - Only one toast shown at a time
showAppToast(context, 'Message 1', behavior: MessageBehavior.replace);
showAppToast(context, 'Message 2', behavior: MessageBehavior.replace);
// Result: Only 'Message 2' is shown

// Queue - Messages shown one after another
showAppToast(context, 'Message 1', behavior: MessageBehavior.queue);
showAppToast(context, 'Message 2', behavior: MessageBehavior.queue);
// Result: Both messages are shown in sequence

📋 Snackbars

Simple Snackbar

showAppSnackBar(
  context,
  'Snackbar message',
  messageType: MessageType.success,
);

Responsive Snackbar

showAppSnackBar(
  context,
  'This adapts to screen size automatically',
  messageType: MessageType.info,
  responsive: true,
  mobileBreakpoint: 600,
  tabletBreakpoint: 1024,
);

⚙️ Global Configuration

Configure globally in your main.dart:

void main() {
  EasyMessageConfig.configure(
    toastDuration: Duration(seconds: 3),
    snackBarDuration: Duration(seconds: 4),
    borderRadius: 16,
    toastPosition: MessagePosition.bottomCenter,
    toastOffset: Offset(0, -20),
    enablePulse: true,
    toastEntryAnimationDuration: Duration(milliseconds: 400),
    toastExitAnimationDuration: Duration(milliseconds: 300),
    toastPulseScale: 1.1,
  );
  
  runApp(MyApp());
}

📍 Toast Positions

Nine positioning options available:

MessagePosition.topLeft       // Top-left corner
MessagePosition.topCenter     // Top-center
MessagePosition.topRight      // Top-right corner
MessagePosition.centerLeft    // Center-left
MessagePosition.center        // Exact center
MessagePosition.centerRight   // Center-right
MessagePosition.bottomLeft    // Bottom-left corner
MessagePosition.bottomCenter  // Bottom-center (default)
MessagePosition.bottomRight   // Bottom-right corner

Example:

showAppToast(
  context,
  'Top right notification',
  position: MessagePosition.topRight,
  messageType: MessageType.info,
);

🎨 Message Types & Styles

Pre-configured message types with default icons and colors:

Type	Icon	Color	Usage
error	❌	Red	Error/Failure states
success	✓	Green	Success/Completion
info	ℹ️	Blue	Information/Notes
warning	⚠️	Orange	Warnings/Cautions

Customize Message Type Colors

// Override default color for a message type
showAppToast(
  context,
  'Custom error color',
  messageType: MessageType.error,
  backgroundColor: Colors.pink, // Override red with pink
);

🚀 Advanced Usage

Programmatically Dismiss Toasts

// Dismiss the currently shown toast
ToastManager.dismissCurrent();

Clear Queue

// Switch to replace mode (automatically clears the queue)
showAppToast(
  context, 
  'This clears any queued messages', 
  behavior: MessageBehavior.replace
);

Reset to Defaults

// Reset all configuration to defaults
EasyMessageConfig.reset();

Animation Presets

Use built-in animation speed presets:

// Fast animation (200ms entry)
EasyMessageConfig.configure(
  toastEntryAnimationDuration: AnimationPresets.fast.entry,
  toastExitAnimationDuration: AnimationPresets.fast.exit,
);

// Slow animation (600ms entry)
EasyMessageConfig.configure(
  toastEntryAnimationDuration: AnimationPresets.slow.entry,
  toastExitAnimationDuration: AnimationPresets.slow.exit,
);

// Instant (100ms entry)
EasyMessageConfig.configure(
  toastEntryAnimationDuration: AnimationPresets.instant.entry,
  toastExitAnimationDuration: AnimationPresets.instant.exit,
);

Available presets: instant, fast, normal, slow, extraSlow

♿ Accessibility

Full support for accessibility services:

• ✅ Screen Reader Support - Semantic labels announce messages
• ✅ Dismissible - Users can dismiss messages via accessibility actions
• ✅ High Contrast - All preset colors meet WCAG contrast ratios
• ✅ Focus Management - Proper focus handling for keyboard navigation

// Messages automatically include accessibility labels
showAppToast(context, 'This is announced to screen readers');

📋 Configuration Reference

Complete list of configuration options:

EasyMessageConfig.configure({
  // Durations
  Duration? toastDuration = Duration(seconds: 2),
  Duration? snackBarDuration = Duration(seconds: 3),
  Duration? toastEntryAnimationDuration = Duration(milliseconds: 400),
  Duration? toastExitAnimationDuration = Duration(milliseconds: 300),
  Duration? toastPulseAnimationDuration = Duration(milliseconds: 600),
  Duration? toastPulseReverseAnimationDuration = Duration(milliseconds: 600),
  
  // Styling
  double? borderRadius = 12,
  
  // Toast Positioning
  MessagePosition? toastPosition = MessagePosition.bottomCenter,
  Offset? toastOffset = Offset(0, 0),
  
  // Behavior
  MessageBehavior? toastBehavior = MessageBehavior.replace,
  MessageBehavior? snackBarBehavior = MessageBehavior.replace,
  
  // Animation
  double? toastPulseScale = 1.05,
  bool? enablePulse = true,
});

📱 Example App

View the complete demo app with all features:

cd example
flutter run

The example includes demonstrations of:

• All 4 message types
• 9 different toast positions
• Queue vs Replace behavior
• Custom styling options
• Animation presets
• Responsive design on all screen sizes

💡 Tips & Best Practices

When to Use Toast vs Snackbar?

Use Case	Toast	Snackbar
Quick feedback	✅	-
Important message	-	✅
Needs user action	-	✅
Non-blocking notice	✅	-
Limited screen space	✅	-

Best Practices

1. Keep messages short - Aim for 1-2 lines max
2. Use message types appropriately - Match severity (error/success/info/warning)
3. Test on multiple devices - Responsive design adapts automatically
4. Consider motion preferences - Use enablePulse: false if needed
5. Queue strategically - Only queue when waiting for user response
6. Avoid notification spam - Use deduplication to prevent duplicates
7. Provide feedback - Always tell users what happened (success/failure)

Performance Tips

// Good: Configure once at startup
void main() {
  EasyMessageConfig.configure(
    toastDuration: Duration(seconds: 2),
    // ...
  );
  runApp(MyApp());
}

// Avoid: Reconfiguring frequently
// ❌ Don't do this in every build method
EasyMessageConfig.configure(...);

🐛 Troubleshooting

Messages Not Showing?

Problem: Toast or snackbar doesn't appear
Solution:

• Ensure you're passing a valid BuildContext from a widget in your widget tree
• Check that your app has a Scaffold widget (required for snackbars)
• Verify the widget is mounted (if (mounted) check)

Animation Looks Choppy?

Problem: Animations are jerky or laggy
Solution:

• Check device performance (animations are smoother on release builds)
• Reduce animation duration: AnimationPresets.fast
• Simplify the toast message (remove complex widgets)

Deduplication Preventing Messages?

Problem: Same message type won't show twice in a row
Solution:

• Change the message text slightly
• Use MessageBehavior.queue mode
• Wait for the previous message to dismiss (check default duration)

Messages Stacking on Top of Each Other?

Problem: Multiple toasts showing simultaneously
Solution:

• Ensure you're using MessageBehavior.replace (default mode)
• Or intentionally use MessageBehavior.queue with proper delays

Custom Icons Not Showing?

Problem: Provided icon doesn't appear
Solution:

• Custom icons override message type icons
• Ensure your icon widget is properly configured
• Try with a built-in message type first to verify the system works

🤝 Contributing

We welcome contributions! Found a bug or have a feature request?

1. Report Issues - Open an issue
2. Submit PRs - Fork, create a feature branch, and submit a pull request
3. Enhance Docs - Help improve README, examples, or code comments

📄 License

MIT License - see LICENSE file for details.

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📚 More Information

• Dart Pub Documentation
• Flutter Documentation
• Creating Dart Packages

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