A Scrollable ListView Widget with the dynamic vertical Alphabet List on the Side which you can drag and tap to scroll to the first item starting with that letter in the list.

Features

  • Responsive on all screens of different Sizes and runs on all Flutter supported platforms
  • show your own widget(overlayWidget) when pointer is in focus with Screen
  • Align the alphabet list on the left or right
  • Tap or drag to scroll to particular Alphabet.

ezgif com-gif-maker

Responsive on device of any size

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Installation

  • Add the dependency
flutter pub add alphabet_scroll_view
  • Import the package ​
import 'package:alphabet_scroll_view/alphabet_scroll_view.dart';

Example Usage

AlphabetScrollView(
    list: list.map((e) => AlphaModel(e)).toList()
    itemExtent: 50,
    itemBuilder: (_, k, id) {
    return Padding(
            padding: const EdgeInsets.only(right: 20),
            child: ListTile(
                    title: Text('$id'),
                    subtitle: Text('Secondary text'),
                    leading: Icon(Icons.label),
                    trailing: Radio<bool>(
                      value: false,
                      groupValue: selectedIndex != k,
                      onChanged: (value) {
                        setState(() {
                          selectedIndex = k;
                        });
                      },
                    ),
                ),
            );
        },
    ),

Customize your overlay widget

Screenshot 2021-01-24 at 1 12 37 PM 
overlayWidget: (value) => Stack(
                alignment: Alignment.center,
                children: [
                  Icon(
                    Icons.star,
                    size: 50,
                    color: Colors.red,
                  ),
                  Container(
                    height: 50,
                    width: 50,
                    decoration: BoxDecoration(
                      shape: BoxShape.circle,
                    ),
                    alignment: Alignment.center,
                    child: Text(
                      '$value'.toUpperCase(),
                      style: TextStyle(fontSize: 18, color: Colors.white),
                    ),
                  ),
                ],
              ),
Screenshot 2021-01-24 at 1 09 55 PM 
 overlayWidget: (value) => Container(
                    height: 50,
                    width: 50,
                    decoration: BoxDecoration(
                      shape: BoxShape.circle,
                      color: Theme.of(context).primaryColor,
                    ),
                    alignment: Alignment.center,
                    child: Text(
                      '$value'.toUpperCase(),
                      style: TextStyle(fontSize: 20, color: Colors.white),
                    ),
                  ),

Overlay Widget in Action

ezgif com-gif-maker

Refer the complete example here

Contributing

You are welcome to contribute to this package, contribution doesnt necessarily mean sending a pull request it could be

  • pointing out bugs/issues
  • requesting a new feature
  • improving the documentation

If you feel generous and confident send a PR but make sure theres an open issue if not feel free to create one before you send a PR. This helps Identify the problem and helps everyone to stay aligned with the issue :)

Libraries

alphabet_scroll_view