maheshj01/alphabet_scroll_view

技术话题

# flutter # flutter-package

使用的依赖

依赖清单 5 项

flutter{"sdk":"flutter"}
collection^1.16.0
flutter_test开发依赖{"sdk":"flutter"}
pedantic开发依赖>=1.10.0-nullsafety.3 <3.0.0
flutter_lints开发依赖2.0.1

原始 README

以下为英文项目原文快照，最新内容请访问 GitHub。

展开 / 收起项目 README

alphabet_scroll_view: ^0.3.2

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

ezgif com-gif-maker (2)

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