friends_badge 0.1.3

Control the Flutter & Friends conference badge.

Friends Badge

A Flutter package for writing images to e-paper badges.

With this package you can control what is displayed on the Flutter & Friends conference badge.

Features

• Write images to e-paper badges over NFC
• Automatically detects the badge model and specifications
• Supports different color palettes (B&W, BWR, BWYR)
• Dithers images for optimal display on the e-paper screen
• Crops and resizes images to fit the badge's aspect ratio

Usage

To use this package, add friends_badge as a dependency in your pubspec.yaml file.

dependencies:
  friends_badge: ^0.1.0

Then, import the package in your Dart code:

import 'package:friends_badge/friends_badge.dart';

Now, you can use the FriendsBadge class to create a BadgeImage and write it to your badge:

// First, create a BadgeImage from an image.
final image = BadgeImage(yourImage);

// Then, write the image to the badge using NFC and BLE.
await image.writeToBadge();

// Optionally, you can show a loading indicator while writing the image.
await WaitingForNfcTap.showLoading(
  context: context,
  job: image.writeToBadge();
);

The showLoading method will display a progress indicator while the image is being written to the badge.

Example

For a complete example, see the example directory.

Documentation

For detailed documentation about how the protocol works, see the following files in the docs directory:

• BLE Format
• Data Format
• End-to-End Example
• Image Format
• NFC Format
• Notes