ensure_visible_when_focused 1.1.1

A handy Flutter widget to scroll to a certain widget every time this widget gains Focus.

example/lib/main.dart

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

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({
    Key? key,
  }) : super(key: key);

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  late GlobalKey<FormState> _formKey;
  late FocusNode _focusNode;

  @override
  void initState() {
    _formKey = GlobalKey<FormState>();
    _focusNode = FocusNode();
    super.initState();
  }

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

  @override
  Widget build(BuildContext context) {
    return SafeArea(
      child: Scaffold(
        body: Form(
          key: _formKey,
          child: Padding(
            padding: const EdgeInsets.all(18),
            child: SingleChildScrollView(
              child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: <Widget>[
                  EnsureVisibleWhenFocused(
                    focusNode: _focusNode,
                    child: TextFormField(
                      focusNode: _focusNode,
                      decoration: InputDecoration(
                        border: OutlineInputBorder(),
                        hintText: '* Form Field',
                      ),
                      validator: (value) => 'Required Field',
                    ),
                  ),
                  ...List.generate(
                    30,
                    (i) => Padding(
                      padding: const EdgeInsets.symmetric(vertical: 8),
                      child: TextFormField(
                        decoration: InputDecoration(
                          border: OutlineInputBorder(),
                          hintText: 'Form Field ${i + 1}',
                        ),
                      ),
                    ),
                  ).toList(),
                ],
              ),
            ),
          ),
        ),
        floatingActionButton: FloatingActionButton(
          onPressed: () {
            final _form = _formKey.currentState!;
            _form.validate();
            _focusNode.requestFocus();
          },
          child: Icon(Icons.check),
        ),
      ),
    );
  }
}