我无法找到一种方法在Flutter中创建一个可以打开数字键盘的输入字段 . 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,但我无法找到任何有关它的文档 .
您可以使用以下内容为TextField指定数字keyboardType:
keyboardType: TextInputType.number
检查我的main.dart文件
import 'package:flutter/material.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, ), ], )), ); } }
将键盘和验证
String numberValidator(String value) { if(value == null) { return null; } final num = num.parse(value, onError: () => null); if(num == null) { return '"$value" is not a valid number'; } return null; } new TextFormField( keyboardType: TextInputType.number, validator: numberValidator, textAlign: TextAlign.right ...
https://docs.flutter.io/flutter/material/TextFormField/TextFormField.html
https://docs.flutter.io/flutter/services/TextInputType-class.html
您可以使用keyboardType参数轻松更改输入类型,并且您有很多可能性检查文档TextInputType,以便您可以使用数字或电话值
new TextField(keyboardType: TextInputType.number)
3 回答
您可以使用以下内容为TextField指定数字keyboardType:
检查我的main.dart文件
将键盘和验证
https://docs.flutter.io/flutter/material/TextFormField/TextFormField.html
https://docs.flutter.io/flutter/services/TextInputType-class.html
您可以使用keyboardType参数轻松更改输入类型,并且您有很多可能性检查文档TextInputType,以便您可以使用数字或电话值