您可以在下面复制粘贴运行完整代码
您可以使用ValueListenableBuilder
并且ValueNotifier
您还需要FocusNode
控制键盘您可以在
代码片段
下面看到工作演示
final ValueNotifier<bool> joinlinkname = ValueNotifier<bool>(false);
...
joinchanged() async {
FocusManager.instance.primaryFocus.unfocus();
joinlinkname.value = !joinlinkname.value;
await Future.delayed(Duration(milliseconds: 500), () {});
myFocusNode.requestFocus();
}
...
ValueListenableBuilder(
builder: (BuildContext context, bool value, Widget child) {
return Column(
children: [
GestureDetector(
onTap: () {
joinchanged();
},
child: Text(
joinlinkname.value ? 'number' : 'text',
style: TextStyle(
color: Colors.blue,
fontSize: 12,
),
),
),
TextField(
focusNode: myFocusNode,
keyboardType: joinlinkname.value
? TextInputType.phone
工作演示
完整代码
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
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> {
final ValueNotifier<bool> joinlinkname = ValueNotifier<bool>(false);
FocusNode myFocusNode;
@override
void initState() {
super.initState();
myFocusNode = FocusNode();
}
@override
void dispose() {
myFocusNode.dispose();
super.dispose();
}
joinchanged() async {
FocusManager.instance.primaryFocus.unfocus();
joinlinkname.value = !joinlinkname.value;
await Future.delayed(Duration(milliseconds: 500), () {});
myFocusNode.requestFocus();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: Text(widget.title)),
body: Center(
child: ValueListenableBuilder(
builder: (BuildContext context, bool value, Widget child) {
return Column(
children: [
GestureDetector(
onTap: () {
joinchanged();
},
child: Text(
joinlinkname.value ? 'number' : 'text',
style: TextStyle(
color: Colors.blue,
fontSize: 12,
),
),
),
TextField(
focusNode: myFocusNode,
keyboardType: joinlinkname.value
? TextInputType.phone
: TextInputType.text,
decoration: InputDecoration(
labelText: joinlinkname.value ? 'num' : "text",
),
inputFormatters: [
joinlinkname.value
? FilteringTextInputFormatter.allow(RegExp('[0-9]'))
: FilteringTextInputFormatter.allow(RegExp('[azAZ09]')),
],
),
],
);
},
valueListenable: joinlinkname,
),
),
);
}
}