instagram_like_animation_button 3.0.0

Fully customizable Instagram Reels double-tap heart animation for Flutter. Fly-to-target, custom builders, gradients, haptic control.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:instagram_like_animation_button/instagram_like_animation_button.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Instagram Like Animation Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'Insta Like Demo'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  final GlobalKey likeKey = GlobalKey();
  bool _isLiked = false;
  int _likeCount = 0;
  TapDownDetails? _tapDetails;

  void _handleDoubleTap(TapDownDetails details) {
    setState(() => _tapDetails = details);
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
      ),
      body: DoubleTapDetector(
        onDoubleTap: _handleDoubleTap,
        child: Stack(
          children: [
            // Background
            Container(color: Colors.black),

            // Target Icon (where the heart flies to)
            Align(alignment: Alignment.center, child: _buildTargetIcon()),

            // Animation Layer
            if (_tapDetails != null)
              ReelAnimationLike(
                key: ValueKey(_tapDetails),
                likeKey: likeKey,
                position: _tapDetails!.globalPosition,
                config: const LikeAnimationConfig(
                  hapticType: HapticFeedbackType.light,
                ),
                style: const LikeAnimationStyle(
                  iconSize: Size(50, 50),
                  iconColor: ColorRes.likeRed,
                ),
                leftRightPosition: 8,
                topBottomPosition: 65,
                onLikeCall: () {
                  if (_isLiked) return;
                  setState(() {
                    _isLiked = true;
                    _likeCount++;
                  });
                },
                onCompleteAnimation: () {
                  setState(() => _tapDetails = null);
                },
              ),
          ],
        ),
      ),
    );
  }

  Widget _buildTargetIcon() {
    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 8.0),
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          InkWell(
            key: likeKey,
            onTap: () {
              setState(() {
                _isLiked = !_isLiked;
                if (_isLiked) {
                  _likeCount++;
                } else {
                  _likeCount--;
                }
              });
            },
            child: Image.asset(
              _isLiked ? AssetRes.icFillHeart : AssetRes.icHeart,
              width: 35,
              height: 35,
              color: _isLiked ? ColorRes.likeRed : ColorRes.whitePure,
              package: 'instagram_like_animation_button',
            ),
          ),
          if (_likeCount > 0)
            Text(
              _likeCount.toString(),
              style: const TextStyle(color: Colors.white),
            ),
        ],
      ),
    );
  }
}