我似乎找不到关于在页面初始加载时关注除 TextField 以外的任何内容的文档。
我有一个条款和条件页面，我试图让页面上的第一项（作为徽标）首先关注。相反，当您第一次向右滑动时，第一个焦点会突出显示容器、徽标、段落文本和操作按钮。一旦成为焦点，它就会首先读取段落文本而不是徽标。
我的目标是防止将注意力集中在容器上并直接进入徽标。因此，不要只关注容器中的项目。从那里开始，焦点将转到段落文本，然后是操作按钮。
这是我的代码：
登陆页面.dart
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:spectrum_access_flutter/views/widgets/buttons/negative_button.dart';
import 'package:spectrum_access_flutter/views/widgets/buttons/primary_button.dart';
import 'package:spectrum_access_flutter/views/widgets/buttons/secondary_button.dart';
class LandingPage extends StatefulWidget {
static const path = 'Terms';
@override
_LandingPageState createState() => _LandingPageState();
}
class _LandingPageState extends State<LandingPage> {
// Define the focus node. To manage the lifecycle, create the FocusNode in
// the initState method, and clean it up in the dispose method.
FocusNode myFocusNode;
bool isVisible = false;
@override
void initState() {
super.initState();
myFocusNode = FocusNode();
}
@override
void dispose() {
// Clean up the focus node when the Form is disposed.
myFocusNode.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return new Scaffold(
body: Center(
child: new ListView(
shrinkWrap: true,
padding: new EdgeInsets.all(25.0),
children: [
Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Padding(
padding: const EdgeInsets.all(5.0),
child: Image.network(
''
'https://upload.wikimedia.org/wikipedia/commons/1/17/Google-flutter-logo.png',
semanticLabel: 'Flutter Logo',
width: 270.0,
focusNode: myFocusNode
),
),
Padding(
padding: const EdgeInsets.fromLTRB(10, 30.0, 10, 30.0),
child: Align(
alignment: Alignment.center,
child: Container(
child: Text(
'To use Spectrum Access, please agree to the terms of service',
textAlign: TextAlign.center,
),
),
),
),
Padding(
padding: const EdgeInsets.only(top: 5.0),
child: SecondaryButton(
title: 'Terms and Conditions',
semanticLabel: 'Terms and Conditions',
onPressed: () {
print('Clicked Terms!');
}),
),
Padding(
padding: const EdgeInsets.only(top: 5.0),
child: SecondaryButton(
title: 'Terms and Conditions',
semanticLabel: 'Privacy Policy',
onPressed: () {
print('Clicked Privacy!');
}),
),
Padding(
padding: const EdgeInsets.fromLTRB(0, 30.0, 0, 5.0),
child: PrimaryButton(
title: 'Agree',
onPressed: () async {
print('Clicked Agree!');
}),
),
Padding(
padding: const EdgeInsets.fromLTRB(0, 0, 0, 5.0),
child: NegativeButton(
title: 'Disagree',
onPressed: () {
print('Clicked Disagree!');
}),
),
],
)
]),
));
}
}
在第 53 行focusNode: myFocusnode
给我这个错误：“未定义命名参数 'focusNode'。”