Nilen Patel Inc.

Tutorial and code of Comment Tree in Flutter. Copy and paste the below code as per your requirements.

comment_tree: ^0.3.0

import 'package:comment_tree/data/comment.dart';
import 'package:comment_tree/widgets/comment_tree_widget.dart';
import 'package:comment_tree/widgets/tree_theme_data.dart';
import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'Comment Tree'),
    );
  }
}

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

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Center(child: Text(widget.title),),
      ),
      body: Container(
        child: CommentTreeWidget<Comment, Comment>(
          Comment(
              avatar: 'null',
              userName: 'null',
              content: 'This is comment 1'),
          [
            Comment(
                avatar: 'null',
                userName: 'null',
                content: 'This is comment 2'),
            Comment(
                avatar: 'null',
                userName: 'null',
                content:
                'This is comment 3'),
            Comment(
                avatar: 'null',
                userName: 'null',
                content: 'This is comment 4'),
            Comment(
                avatar: 'null',
                userName: 'null',
                content:
                'This is comment 5'),
          ],
          treeThemeData:
          TreeThemeData(lineColor: Colors.green[500]!, lineWidth: 3),
          avatarRoot: (context, data) => const PreferredSize(
            child: CircleAvatar(
              radius: 18,
              backgroundColor: Colors.grey,
              backgroundImage: AssetImage('assets/avatar_2.png'),
            ),
            preferredSize: Size.fromRadius(18),
          ),
          avatarChild: (context, data) => const PreferredSize(
            child: CircleAvatar(
              radius: 12,
              backgroundColor: Colors.grey,
              backgroundImage: AssetImage('assets/images/background.jpg'),
            ),
            preferredSize: Size.fromRadius(12),
          ),
          contentChild: (context, data) {
            return Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Container(
                  padding: const EdgeInsets.symmetric(vertical: 8, horizontal: 8),
                  decoration: BoxDecoration(
                      color: Colors.grey[100],
                      borderRadius: BorderRadius.circular(12)),
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Text(
                        'Test',
                        style: Theme.of(context).textTheme.caption?.copyWith(
                            fontWeight: FontWeight.w600, color: Colors.black),
                      ),
                      const SizedBox(
                        height: 4,
                      ),
                      Text(
                        '${data.content}',
                        style: Theme.of(context).textTheme.caption?.copyWith(
                            fontWeight: FontWeight.w300, color: Colors.black),
                      ),
                    ],
                  ),
                ),
                DefaultTextStyle(
                  style: Theme.of(context).textTheme.caption!.copyWith(
                      color: Colors.grey[700], fontWeight: FontWeight.bold),
                  child: Padding(
                    padding: const EdgeInsets.only(top: 4),
                    child: Row(
                      children: const [
                         SizedBox(
                          width: 8,
                        ),
                         Text('Like'),
                         SizedBox(
                          width: 24,
                        ),
                         Text('Reply'),
                      ],
                    ),
                  ),
                )
              ],
            );
          },
          contentRoot: (context, data) {
            return Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Container(
                  padding: const EdgeInsets.symmetric(vertical: 8, horizontal: 8),
                  decoration: BoxDecoration(
                      color: Colors.grey[100],
                      borderRadius: BorderRadius.circular(12)),
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Text(
                        'dangngocduc',
                        style: Theme.of(context).textTheme.caption!.copyWith(
                            fontWeight: FontWeight.w600, color: Colors.black),
                      ),
                      const SizedBox(
                        height: 4,
                      ),
                      Text(
                        '${data.content}',
                        style: Theme.of(context).textTheme.caption!.copyWith(
                            fontWeight: FontWeight.w300, color: Colors.black),
                      ),
                    ],
                  ),
                ),
                DefaultTextStyle(
                  style: Theme.of(context).textTheme.caption!.copyWith(
                      color: Colors.grey[700], fontWeight: FontWeight.bold),
                  child: Padding(
                    padding: const EdgeInsets.only(top: 4),
                    child: Row(
                      children: const [
                         SizedBox(
                          width: 8,
                        ),
                         Text('Like'),
                         SizedBox(
                          width: 24,
                        ),
                         Text('Reply'),
                      ],
                    ),
                  ),
                )
              ],
            );
          },
        ),
        padding: const EdgeInsets.symmetric(vertical: 12, horizontal: 16),
      ),
    );
  }
}