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
U可以安装intl_phone_number_input包
dependencies:
intl_phone_number_input: ^0.5.2+2
试试下面的代码:
import 'package:flutter/material.dart';
import 'package:intl_phone_number_input/intl_phone_number_input.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
var darkTheme = ThemeData.dark().copyWith(primaryColor: Colors.blue);
return MaterialApp(
title: 'Demo',
themeMode: ThemeMode.dark,
darkTheme: darkTheme,
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: Scaffold(
appBar: AppBar(title: Text('Demo')),
body: MyHomePage(),
),
);
}
}
class MyHomePage extends StatefulWidget {
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
final GlobalKey<FormState> formKey = GlobalKey<FormState>();
final TextEditingController controller = TextEditingController();
String initialCountry = 'NG';
PhoneNumber number = PhoneNumber(isoCode: 'NG');
@override
Widget build(BuildContext context) {
return Form(
key: formKey,
child: Container(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
InternationalPhoneNumberInput(
onInputChanged: (PhoneNumber number) {
print(number.phoneNumber);
},
onInputValidated: (bool value) {
print(value);
},
selectorConfig: SelectorConfig(
selectorType: PhoneInputSelectorType.BOTTOM_SHEET,
backgroundColor: Colors.black,
),
ignoreBlank: false,
autoValidateMode: AutovalidateMode.disabled,
selectorTextStyle: TextStyle(color: Colors.black),
initialValue: number,
textFieldController: controller,
inputBorder: OutlineInputBorder(),
),
RaisedButton(
onPressed: () {
formKey.currentState.validate();
},
child: Text('Validate'),
),
RaisedButton(
onPressed: () {
getPhoneNumber('+15417543010');
},
child: Text('Update'),
),
],
),
),
);
}
void getPhoneNumber(String phoneNumber) async {
PhoneNumber number =
await PhoneNumber.getRegionInfoFromPhoneNumber(phoneNumber, 'US');
setState(() {
this.number = number;
});
}
@override
void dispose() {
controller?.dispose();
super.dispose();
}
}
其他回答
通过这个选项，你可以严格限制另一个字符的数字。
inputFormatters: [WhitelistingTextInputFormatter.digitsOnly],
keyboardType: TextInputType.number,
使用上述选项，您必须导入此
import 'package:flutter/services.dart';
使用这种选项，用户不能在文本框中粘贴字符
TextField(
controller: _controller,
keyboardType: TextInputType.number,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.allow(RegExp(r'[0.0-9.9]')),
])
这里是关于如何添加数字键盘，如何进行验证，如何添加样式，以及dart/flutter中的其他内容的所有细节。 我希望它能帮助你更好地学习。
Padding(
padding: const EdgeInsets.all(3.0),
child: TextFormField(
maxLength: 10,
keyboardType: TextInputType.number,
validator: (value) {
if (value.isEmpty) {
return 'Enter Number Please';
}
return null;
},
decoration: InputDecoration(
prefixIcon: Icon(Icons.smartphone),
prefixText: '+92',
labelText: 'Enter Phone Number',
contentPadding: EdgeInsets.zero,
enabledBorder: OutlineInputBorder(),
focusedBorder: OutlineInputBorder(
borderSide: BorderSide(
width: 2, color: Theme
.of(context)
.primaryColor,
)
),
focusColor: Theme
.of(context)
.primaryColor,
),
),
),
仅限号码类型
keyboardType: TextInputType.number
和更多的选择与数字垫
keyboardType: TextInputType.numberWithOptions(decimal: true,signed: false)
U可以安装intl_phone_number_input包
dependencies:
intl_phone_number_input: ^0.5.2+2
试试下面的代码:
import 'package:flutter/material.dart';
import 'package:intl_phone_number_input/intl_phone_number_input.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
var darkTheme = ThemeData.dark().copyWith(primaryColor: Colors.blue);
return MaterialApp(
title: 'Demo',
themeMode: ThemeMode.dark,
darkTheme: darkTheme,
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: Scaffold(
appBar: AppBar(title: Text('Demo')),
body: MyHomePage(),
),
);
}
}
class MyHomePage extends StatefulWidget {
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
final GlobalKey<FormState> formKey = GlobalKey<FormState>();
final TextEditingController controller = TextEditingController();
String initialCountry = 'NG';
PhoneNumber number = PhoneNumber(isoCode: 'NG');
@override
Widget build(BuildContext context) {
return Form(
key: formKey,
child: Container(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
InternationalPhoneNumberInput(
onInputChanged: (PhoneNumber number) {
print(number.phoneNumber);
},
onInputValidated: (bool value) {
print(value);
},
selectorConfig: SelectorConfig(
selectorType: PhoneInputSelectorType.BOTTOM_SHEET,
backgroundColor: Colors.black,
),
ignoreBlank: false,
autoValidateMode: AutovalidateMode.disabled,
selectorTextStyle: TextStyle(color: Colors.black),
initialValue: number,
textFieldController: controller,
inputBorder: OutlineInputBorder(),
),
RaisedButton(
onPressed: () {
formKey.currentState.validate();
},
child: Text('Validate'),
),
RaisedButton(
onPressed: () {
getPhoneNumber('+15417543010');
},
child: Text('Update'),
),
],
),
),
);
}
void getPhoneNumber(String phoneNumber) async {
PhoneNumber number =
await PhoneNumber.getRegionInfoFromPhoneNumber(phoneNumber, 'US');
setState(() {
this.number = number;
});
}
@override
void dispose() {
controller?.dispose();
super.dispose();
}
}
