dependencies:
  showcaseview:
    git:
      url: https://github.com/kirill-21/flutter_showcaseview
      ref: master

import 'package:showcaseview/showcaseview.dart';

ShowCaseWidget(
  builder: Builder(
    builder : (context)=> Somewidget()
  ),
),

GlobalKey _one = GlobalKey();
GlobalKey _two = GlobalKey();
GlobalKey _three = GlobalKey();

...

Showcase(
  key: _one,
  title: 'Menu',
  description: 'Click here to see menu options',
  child: Icon(
    Icons.menu,
    color: Colors.black45,
  ),
),

Showcase(
  key: _two,
  title: 'Profile',
  description: 'Click here to go to your Profile',
  disableAnimation: true,
  shapeBorder: CircleBorder(),
  radius: BorderRadius.all(Radius.circular(40)),
  showArrow: false,
  tipBorderRadius: BorderRadius.all(Radius.circular(8)),
  overlayPadding: EdgeInsets.all(5),
  slideDuration: Duration(milliseconds: 1500),
  tooltipColor: Colors.blueGrey,
  blurValue: 2,
  disableDefaultTargetGestures: true,
  initialAnimationCurve: Curves.easeIn,
  initialAnimationDuration: const Duration(milliseconds: 300),
  initialAnimationAlignment: Alignment.center,
  child: ...,
),

Showcase.withWidget(
  key: _three,
  cHeight: 80,
  cWidth: 140,
  shapeBorder: CircleBorder(),
  container: Column(
    crossAxisAlignment: CrossAxisAlignment.start,
    children: <Widget>[
      ...
    ],
  ),
  child: ...,
),

someEvent(){
    ShowCaseWidget.of(context).startShowCase([_one, _two, _three]);
}

ShowCaseWidget(
  onFinish: () {
    // Your code goes here
  },
  builder: Builder(
    builder : (context) ()=> Somewidget()
  ),
),

someEvent(){
  ShowCaseWidget.of(context).next();
}

someEvent(){
  ShowCaseWidget.of(context).previous();
}

WidgetsBinding.instance.addPostFrameCallback((_) =>
  ShowCaseWidget.of(context).startShowCase([_one, _two, _three])
);

ShowCaseWidget(
  disableBarrierInteraction: true,
),

ShowCase(
  disableDefaultTargetGestures: true,
),

// This controller will be assigned to respected sctollview.
final _controller = ScrollController();

ShowCaseWidget(
  onStart: (index, key) {
    if(index == 0) {
      WidgetsBinding.instance.addPostFrameCallback((_) {
       // If showcase widget is at offset 1000 in the listview.
       // If you don't know the exact position of the showcase widget,
       // You can provide nearest possible location.
       // 
       // In this case providing 990 instead of 1000 will work as well.
        _controller.jumpTo(1000);
      });
    }
  },
);

ShowCaseWidget(
  enableAutoScroll: true,
);

MIT License

Copyright (c) 2021 Simform Solutions

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.