如果您的用例是在您的Dialog
中添加多个TextFields
以便您的主Form
不会变得拥挤,我认为您最好构建一些比AlertDialog
和SimpleDialog
更具可定制性的东西,因为它们用于简单的活动(确认、无线电等).
否则,你为什么要用Dialog
来换一个TextField
呢?
当我们添加多个TextField
时,我们应该小心我们的设计 Select ,因为其他人会与此视图交互来填充数据,在本例中,我更喜欢使用PageRoute
类的fullscreenDialog
属性.我不确定SimpleDialog
是否适合在Flutter 中使用.
这里有一个关于如何使用FullScreenDialog
的快速示例,我希望这对您有帮助,您应该能够以您想要的方式对其进行修改:
import 'package:flutter/material.dart';
void main() {
runApp(new MaterialApp(home: new MyApp(),));
}
class MyApp extends StatefulWidget {
@override
MyAppState createState() => new MyAppState();
}
class MyAppState extends State<MyApp> {
FullScreenDialog _myDialog = new FullScreenDialog();
@override
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text("Fill this form"),
),
body: new Column(
children: <Widget>[
new TextField(controller: new TextEditingController(
text: "Add a single text field"),),
new Card(child: new ListTile(
title: new Text("Click to add your top 3 amazing skills"),
subtitle: new Text(
"${_myDialog._skillOne} ${_myDialog._skillTwo} ${_myDialog
._skillThree}"),
onTap: () {
Navigator.push(context, new MaterialPageRoute(
builder: (BuildContext context) => _myDialog,
fullscreenDialog: true,
));
},
),
),
],
)
);
}
}
class FullScreenDialog extends StatefulWidget {
String _skillOne = "You have";
String _skillTwo = "not Added";
String _skillThree = "any skills yet";
@override
FullScreenDialogState createState() => new FullScreenDialogState();
}
class FullScreenDialogState extends State<FullScreenDialog> {
TextEditingController _skillOneController = new TextEditingController();
TextEditingController _skillTwoController = new TextEditingController();
TextEditingController _skillThreeController = new TextEditingController();
@override
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text("Add your top 3 skills"),
),
body: new Padding(child: new ListView(
children: <Widget>[
new TextField(controller: _skillOneController,),
new TextField(controller: _skillTwoController,),
new TextField(controller: _skillThreeController,),
new Row(
children: <Widget>[
new Expanded(child: new RaisedButton(onPressed: () {
widget._skillThree = _skillThreeController.text;
widget._skillTwo = _skillTwoController.text;
widget._skillOne = _skillOneController.text;
Navigator.pop(context);
}, child: new Text("Save"),))
],
)
],
), padding: const EdgeInsets.symmetric(horizontal: 20.0),)
);
}
}
EDIT个
在做了一些研究后,似乎在当前的Flutter 版本中,临时修复也在本期文档中.
import 'package:flutter/material.dart';
void main() {
runApp(new MaterialApp(home: new FocusVisibilityDemo()));
}
class FocusVisibilityDemo extends StatefulWidget {
@override
_FocusVisibilityDemoState createState() => new _FocusVisibilityDemoState();
}
class _FocusVisibilityDemoState extends State<FocusVisibilityDemo> {
@override
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(title: new Text('Text Dialog Demo')),
body: new Center(
child: new RaisedButton(
onPressed: _showDialog,
child: new Text("Push Me"),
),
),
);
}
_showDialog() async {
await showDialog<String>(
context: context,
child: new _SystemPadding(child: new AlertDialog(
contentPadding: const EdgeInsets.all(16.0),
content: new Row(
children: <Widget>[
new Expanded(
child: new TextField(
autofocus: true,
decoration: new InputDecoration(
labelText: 'Full Name', hintText: 'eg. John Smith'),
),
)
],
),
actions: <Widget>[
new FlatButton(
child: const Text('CANCEL'),
onPressed: () {
Navigator.pop(context);
}),
new FlatButton(
child: const Text('OPEN'),
onPressed: () {
Navigator.pop(context);
})
],
),),
);
}
}
class _SystemPadding extends StatelessWidget {
final Widget child;
_SystemPadding({Key key, this.child}) : super(key: key);
@override
Widget build(BuildContext context) {
var mediaQuery = MediaQuery.of(context);
return new AnimatedContainer(
padding: mediaQuery.viewInsets,
duration: const Duration(milliseconds: 300),
child: child);
}
}