Stepper 3

import 'package:flutter/material.dart';
import 'package:gap/gap.dart';
import 'package:separated_row/separated_row.dart';

int activeIndex = 0;
final list = [
  {
    'title': 'Personal Info',
  },
  {
    'title': 'Account',
  },
  {
    'title': 'Confirmation',
  }
];

SeparatedRow(
  separatorBuilder: (context, index) {
    final finish = activeIndex > index;
    return Expanded(
      child: Divider(
        indent: 8,
        endIndent: 8,
        thickness: 1,
        color: finish ? Colors.deepPurple : Colors.black54,
      ),
    );
  },
  children: List.generate(list.length, (index) {
    final isActive = activeIndex == index;
    final finish = activeIndex > index;
    final title = list[index]['title'].toString();
    return GestureDetector(
      onTap: () {
        activeIndex = index;
        setState(() {});
      },
      child: Row(
        mainAxisSize: MainAxisSize.min,
        children: [
          finish
              ? const Icon(
                  Icons.check_circle,
                  size: 16,
                  color: Colors.deepPurple,
                )
              : isActive
                  ? const SizedBox(
                      width: 12,
                      height: 12,
                      child: CircularProgressIndicator(strokeWidth: 1),
                    )
                  : SizedBox(
                      width: 14,
                      child: Text(
                        '${index + 1}',
                        textAlign: TextAlign.center,
                        style: const TextStyle(
                          fontWeight: FontWeight.w400,
                          fontSize: 14,
                          color: Colors.black45,
                        ),
                      ),
                    ),
          const Gap(4),
          Text(
            title,
            style: TextStyle(
              fontWeight: FontWeight.w400,
              fontSize: 14,
              color: finish
                  ? Colors.deepPurple
                  : isActive
                      ? Colors.black87
                      : Colors.black45,
            ),
          ),
        ],
      ),
    );
  }),
),