textInputAction：TextInputAction.next 无法将用户焦点移动到下一个元素

Question

当我使用 TextInputAction 并将其设置为下一个时，该按钮在我的模拟器设备上确实发生了变化，但它没有执行任何操作，用户交互不会移至下一个元素。已在 FLutter `gitHUb 页面以及聊天室中打开了一张票，但到目前为止没有任何帮助，希望继续我的训练:)

https://github.com/flutter/flutter/issues/47749

Answer 1

您的代码中有错误，您输入_passwordFocusNode字段email并导致错误
，_emailEditingComplete()焦点停留在电子邮件中

void _emailEditingComplete() {
    FocusScope.of(context).requestFocus(_passwordFocusNode);
}

return TextField(
  controller: _passwordController,
  focusNode: _emailFocusNode,

return TextField(
  controller: _emailController,
  focusNode: _passwordFocusNode,

onEditingCompleteonSubmitted在这种情况下都可以正常工作

用于测试的工作演示

完整的测试代码

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

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

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

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

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;
  final TextEditingController _emailController = TextEditingController();
  final TextEditingController _passwordController = TextEditingController();
  final FocusNode _emailFocusNode = FocusNode();
  final FocusNode _passwordFocusNode = FocusNode();

  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }

  @override
  void dispose() {
    // Clean up the focus node when the Form is disposed.
    _emailFocusNode.dispose();
    _passwordFocusNode.dispose();

    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            TextField(
              focusNode: _emailFocusNode,
              decoration: InputDecoration(
                labelText: 'Email',
                hintText: 'test@test.com',
              ),
              keyboardType: TextInputType.emailAddress,
              textInputAction: TextInputAction.next,
              onEditingComplete: () {
                FocusScope.of(context).requestFocus(_passwordFocusNode);
              },
              onSubmitted: (val) {
                //FocusScope.of(context).requestFocus(_passwordFocusNode);
              },
            ),
            TextField(
              focusNode: _passwordFocusNode,
              decoration: InputDecoration(
                labelText: 'password',
              ),
              keyboardType: TextInputType.emailAddress,
              textInputAction: TextInputAction.done,
              onSubmitted: (val) {},
            ),
            Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.display1,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: Icon(Icons.add),
      ),
    );
  }
}

漏洞