animation_scroller 0.3.1

Animate to the tapped UI. The amount of animation can be adjusted by the UI.

example/lib/main.dart

import 'package:animation_scroller/animation_scroller.dart';
import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'EveryDaySoft_Example'),
    );
  }
}

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

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> with ChangeNotifier {
  double _containerValue = 100.0;
  final _focusNode = FocusNode();
  final _focusNode2 = FocusNode();
  final GlobalKey _widgetKey = GlobalKey();
  final GlobalKey _widgetKeyBottom = GlobalKey();
  final AnimationScroller _scrollController = AnimationScroller();

  @override
  void initState() {
    super.initState();

    _focusNode.addListener(() {
      scrollLogic(_focusNode);
    });

    _focusNode2.addListener(() {
      scrollLogic(_focusNode2);
    });
  }

  scrollLogic(FocusNode node) {
    _scrollController.speedCheck(node, 100);
  }

  @override
  void dispose() {
    _focusNode.dispose();
    _focusNode2.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    _scrollController.widgetBuild(context, _containerValue, 100);

    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: GestureDetector(
        onTap: () {
          FocusScope.of(context).unfocus();
          _scrollController.reset();
        },
        child: NotificationListener<ScrollNotification>(
          onNotification: (scrollNotification) {
            _scrollController.scrollState(scrollNotification,
                _scrollController.position.maxScrollExtent, _containerValue);
            return true;
          },
          child: SingleChildScrollView(
            controller: _scrollController,
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: <Widget>[
                Container(
                  color: Colors.black,
                  width: _containerValue,
                  height: _containerValue,
                ),
                Row(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    Slider(
                      value: _containerValue,
                      min: 0,
                      max: MediaQuery.of(context).size.width,
                      divisions: 1000,
                      onChangeStart: (_) {
                        setState(() {
                          _scrollController.scrollOffset = 0;
                          _scrollController.initFlg = false;
                        });
                      },
                      onChanged: (double value) {
                        setState(() {
                          _containerValue = value;
                        });
                      },
                    ),
                  ],
                ),
                TextField(
                  keyboardType: TextInputType.datetime,
                  key: _widgetKey,
                  focusNode: _focusNode,
                  onSubmitted: (value) => _scrollController.reset(),
                  decoration: const InputDecoration(
                    border: OutlineInputBorder(),
                    labelText: 'start',
                  ),
                ),
                const Padding(padding: EdgeInsets.only(top: 20)),
                TextField(
                  keyboardType: TextInputType.datetime,
                  key: _widgetKeyBottom,
                  focusNode: _focusNode2,
                  onSubmitted: (value) => _scrollController.reset(),
                  decoration: const InputDecoration(
                    border: OutlineInputBorder(),
                    labelText: 'end',
                  ),
                ),
                Container(
                  color: Colors.black,
                  width: _containerValue,
                  height: _containerValue,
                )
              ],
            ),
          ),
        ), // This
      ), // trailing comma makes auto-formatting nicer for build methods.
    );
  }
}