我无法找到一种方法来创建一个输入字段颤振，将打开一个数字键盘，应该采取数字输入。这是可能的颤振材料部件?一些GitHub讨论似乎表明这是一个受支持的功能，但我无法找到任何关于它的文档。
当前回答
您可以将这两个属性与TextFormField一起使用
TextFormField(
keyboardType: TextInputType.number
inputFormatters: [WhitelistingTextInputFormatter.digitsOnly],
它只允许输入数字，没有其他的东西。
https://api.flutter.dev/flutter/services/TextInputFormatter-class.html
其他回答
您可以将这两个属性与TextFormField一起使用
TextFormField(
keyboardType: TextInputType.number
inputFormatters: [WhitelistingTextInputFormatter.digitsOnly],
它只允许输入数字，没有其他的东西。
https://api.flutter.dev/flutter/services/TextInputFormatter-class.html
为避免粘贴的不是数字值，添加后
keyboardType: TextInputType.number
这段代码:
inputFormatters: [FilteringTextInputFormatter.digitsOnly]
从https://api.flutter.dev/flutter/services/FilteringTextInputFormatter-class.html
设置你的keyboardType为TextInputType.number，
例如:keyboardType: TextInputType.number，
TextFormField(
controller: yourcontroller,
keyboardType: TextInputType.number,
decoration: const InputDecoration(
labelText: 'Mobile',
suffixIcon: Padding(
padding: EdgeInsets.only(),
child:
Icon(Icons.phone_outlined, color: Color(0xffff4876)),
),
),
validator: (text) {
if (text == null || text.isEmpty) {
return 'Please enter your Mobile No.';
}
return null;
},
),
对于数字输入或数字键盘，您可以使用keyboardType: TextInputType.number
TextFormField(
decoration: InputDecoration(labelText:'Amount'),
controller: TextEditingController(
),
validator: (value) {
if (value.isEmpty) {
return 'Enter Amount';
}
},
keyboardType: TextInputType.number
)
你可以指定数字为keyboardType的TextField使用:
keyboardType: TextInputType.number
检查一下我的总管。飞镖文件
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
void main() => runApp(new MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
// TODO: implement build
return new MaterialApp(
home: new HomePage(),
theme: new ThemeData(primarySwatch: Colors.blue),
);
}
}
class HomePage extends StatefulWidget {
@override
State<StatefulWidget> createState() {
return new HomePageState();
}
}
class HomePageState extends State<HomePage> {
@override
Widget build(BuildContext context) {
return new Scaffold(
backgroundColor: Colors.white,
body: new Container(
padding: const EdgeInsets.all(40.0),
child: new Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
new TextField(
decoration: new InputDecoration(labelText: "Enter your number"),
keyboardType: TextInputType.number,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.digitsOnly
], // Only numbers can be entered
),
],
)),
);
}
}
