Flutter - Keyboard does not appear and does not stay under the chosen field

Question

Keyboard is not working properly with TextField.

The code below I put 14 TextField, but when clicking for example in field 14 the keyboard does not appear and it is not below the TextField tapped.

Could you help me with this keyboard problem not showing up and not getting me under the chosen field to be?

import 'package:flutter/material.dart';

void main() {
  runApp(new MaterialApp(home: new HomePage()));
}

class HomePage extends StatefulWidget {
  @override
  HomePageState createState() => new HomePageState();
}

class HomePageState extends State<HomePage> {
  final TextEditingController _controller = new TextEditingController();

  @override
  Widget build(BuildContext context) {    
    return new Scaffold(
      body: new Stack(
        children: <Widget>[
          new ListView(
            shrinkWrap: true,
            children: <Widget>[
              new TextField(
                controller: _controller,
                decoration: new InputDecoration(
                  hintText: 'Type something 1',
                ),
              ),
              new TextField(
                controller: _controller,
                decoration: new InputDecoration(
                  hintText: 'Type something 2',
                ),
              ),
              new TextField(
                controller: _controller,
                decoration: new InputDecoration(
                  hintText: 'Type something 3',
                ),
              ),
              new TextField(
                controller: _controller,
                decoration: new InputDecoration(
                  hintText: 'Type something 4',
                ),
              ),
              new TextField(
                controller: _controller,
                decoration: new InputDecoration(
                  hintText: 'Type something 5',
                ),
              ),
              new TextField(
                controller: _controller,
                decoration: new InputDecoration(
                  hintText: 'Type something 6',
                ),
              ),
              new TextField(
                controller: _controller,
                decoration: new InputDecoration(
                  hintText: 'Type something 7',
                ),
              ),
              new TextField(
                controller: _controller,
                decoration: new InputDecoration(
                  hintText: 'Type something 8',
                ),
              ),
              new TextField(
                controller: _controller,
                decoration: new InputDecoration(
                  hintText: 'Type something 9',
                ),
              ),
              new TextField(
                controller: _controller,
                decoration: new InputDecoration(
                  hintText: 'Type something 10',
                ),
              ),
              new TextField(
                controller: _controller,
                decoration: new InputDecoration(
                  hintText: 'Type something 11',
                ),
              ),
              new TextField(
                controller: _controller,
                decoration: new InputDecoration(
                  hintText: 'Type something 12',
                ),
              ),
              new TextField(
                controller: _controller,
                decoration: new InputDecoration(
                  hintText: 'Type something 13',
                ),
              ),
              new TextField(
                controller: _controller,
                decoration: new InputDecoration(
                  hintText: 'Type something 14',
                ),
              ),             
            ],
          )          
        ]
      )
    );
  }
}

Answer 1

I had the same problem, but in my case it was in Key object

await showDialog(
    context: context,
    barrierDismissible: false,
    builder: (context) {
      final _textKey = GlobalKey<FormState>();
      TextEditingController controller = TextEditingController();

      return AlertDialog(
        title: Text('Load conference'),
        content: Form(
          key: _textKey,
          child: TextFormField(
            controller: controller,
            validator: (str) {
              if (str.isEmpty) {
                return 'Empty url';
              } else if (str.length >= 4 && str.substring(0, 4).toLowerCase() != 'http') {
                return 'Url has to start from \'http\'';
              }
            },
          ),
          onChanged: () {
            if (controller.text.isNotEmpty) {
              _textKey.currentState.validate();
            }
          },
        ),

Problem was solved by making key static class field

static final _textKey = GlobalKey<FormState>();