I have full screen TextField that grow in size when the user added more lines/text. I want to add scrollbar for the user to know the size the TextField and where is he.
This is the code the my screen and TextField:
import 'package:flutter/material.dart';
class TextEditor extends StatefulWidget {
TextEditor();
#override
_TextEditorState createState() => _TextEditorState();
}
class _TextEditorState extends State<TextEditor> {
TextEditingController _editTextController = TextEditingController();
#override
Widget build(BuildContext context) {
var scaffold = Scaffold(
appBar: AppBar(
leading: IconButton(
icon: Icon(Icons.arrow_back),
onPressed: () => _backButton(),
),
title: Text("File name"),
),
body: _buildTextEditor(),
resizeToAvoidBottomInset: true,
);
return scaffold;
}
Widget _buildTextEditor() {
return TextField(
autofocus: true,
keyboardType: TextInputType.multiline,
maxLines: null,
autocorrect: true,
onChanged: (s) => {},
decoration: InputDecoration(
border: InputBorder.none,
isDense: true,
),
);
}
_backButton() {}
}
This is what I have
This is what I want, the scrollbar on the right
I could not find a way to do this and I don't an expert on Flutter to know how to do this on my own
Fortunately, the TextField widget accepts a scroll controller. This can be used to generate a scrollbar. See the example below.
TextEditingController _editTextController = TextEditingController();
// Initialise a scroll controller.
ScrollController _scrollController = ScrollController();
Then, add it to the TextField widget and wrap this widget in a Scrollbar!
return Scrollbar(
controller: _scrollController,
isAlwaysShown: true,
child: TextField(
scrollController: _scrollController,
autofocus: true,
keyboardType: TextInputType.multiline,
maxLines: null,
autocorrect: true,
onChanged: (s) => {},
decoration: InputDecoration(
border: InputBorder.none,
isDense: true,
),
),
);
MediaQuery.removePadding(
context: context,
removeTop: true,
removeBottom: true,
child: Scrollbar(
thumbVisibility: true,
child: TextField( //If you want initial value use TextFormField
maxLines: 4,
minLines: 1,
decoration: const InputDecoration(contentPadding: EdgeInsets.zero),
),
),
);
After multiple tries, this helped in my case.
If you want to use with static read only text, user TextFormField with initialValue and readOnly true.
As per: How to shift focus to next textfield in flutter?, I used FocusScope.of(context).nextFocus() to shift focus. But this doesn't work when you use a reusable textfield class. It only works when you directly use TextField class inside Column.
import 'package:flutter/material.dart';
void main() {
return runApp(MyApp());
}
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
final focus = FocusScope.of(context);
return MaterialApp(
title: 'Flutter Demo',
home: Scaffold(
body: SafeArea(
child: Column(
children: <Widget>[
CustomTextField(
textInputAction: TextInputAction.next,
onEditingComplete: () => focus.nextFocus(),
),
const SizedBox(height: 10),
CustomTextField(
textInputAction: TextInputAction.done,
onEditingComplete: () => focus.unfocus(),
),
],
),
),
),
);
}
}
class CustomTextField extends StatelessWidget {
final TextInputAction textInputAction;
final VoidCallback onEditingComplete;
const CustomTextField({
this.textInputAction = TextInputAction.done,
this.onEditingComplete = _onEditingComplete,
});
static _onEditingComplete() {}
#override
Widget build(BuildContext context) {
return TextField(
textInputAction: textInputAction,
onEditingComplete: onEditingComplete,
);
}
}
In this code, if I click next in keyboard it will not shift focus to next textfield. Please help me with this.
That's because the context doesn't have anything it could grab the focus from. Replace your code with this:
void main() => runApp(MaterialApp(home: MyApp()));
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
final focus = FocusScope.of(context);
return Scaffold(
appBar: AppBar(),
body: Column(
children: <Widget>[
CustomTextField(
textInputAction: TextInputAction.next,
onEditingComplete: () => focus.nextFocus(),
),
SizedBox(height: 10),
CustomTextField(
textInputAction: TextInputAction.done,
onEditingComplete: () => focus.unfocus(),
),
],
),
);
}
}
You need to wrap your fields in a form widget with a form key and use a TextFormField instead of textField widget. Set the action to TextInputAction.next and it should work! You can also use TextInput.done to trigger the validation.
Here a fully working exemple:
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
class LogInPage extends StatefulWidget {
LogInPage({Key key}) : super(key: key);
#override
_LogInPageState createState() => _LogInPageState();
}
class _LogInPageState extends State<LogInPage> {
final _formKey = new GlobalKey<FormState>();
bool isLoading = false;
String firstName;
String lastName;
String password;
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(),
backgroundColor: Colors.black,
body: body(),
);
}
Widget body() {
return Form(
key: _formKey,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
showInput(
firstName,
TextInputType.name,
Icons.drive_file_rename_outline,
"FirstName",
TextInputAction.next,
onSaved: (value) => firstName = value.trim()),
showInput(lastName, TextInputType.name,
Icons.drive_file_rename_outline, "LastName", TextInputAction.next,
onSaved: (value) => lastName = value.trim()),
showInput(null, TextInputType.text, Icons.drive_file_rename_outline,
"Password", TextInputAction.done,
isPassword: true, onSaved: (value) => password = value),
Padding(
padding: EdgeInsets.symmetric(vertical: 10),
),
showSaveButton(),
],
),
);
}
Widget showInput(String initialValue, TextInputType textInputType,
IconData icon, String label, TextInputAction textInputAction,
{#required Function onSaved, bool isPassword = false}) {
return Padding(
padding: EdgeInsets.fromLTRB(16.0, 20.0, 16.0, 0.0),
child: new TextFormField(
style: TextStyle(color: Theme.of(context).primaryColorLight),
maxLines: 1,
initialValue: initialValue,
keyboardType: textInputType,
textInputAction: textInputAction,
autofocus: false,
obscureText: isPassword,
enableSuggestions: !isPassword,
autocorrect: !isPassword,
decoration: new InputDecoration(
fillColor: Theme.of(context).primaryColor,
hintText: label,
hintStyle: TextStyle(color: Theme.of(context).primaryColorDark),
filled: true,
contentPadding: new EdgeInsets.fromLTRB(10.0, 10.0, 10.0, 10.0),
border: new OutlineInputBorder(
borderRadius: new BorderRadius.circular(12.0),
),
icon: new Icon(
icon,
color: Theme.of(context).primaryColorLight,
)),
validator: (value) {
return value.isEmpty && !isPassword
? "You didn't filled this field."
: null;
},
onSaved: onSaved,
onFieldSubmitted:
textInputAction == TextInputAction.done ? (value) => save() : null,
),
);
}
Widget showSaveButton() {
return RaisedButton(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(100))),
color: Theme.of(context).primaryColor,
padding: EdgeInsets.symmetric(vertical: 12, horizontal: 25),
child: isLoading
? SizedBox(height: 17, width: 17, child: CircularProgressIndicator())
: Text(
"Sauvegarder",
style: TextStyle(color: Theme.of(context).primaryColorLight),
),
onPressed: save,
);
}
void save() async {
if (_formKey.currentState.validate()) {
_formKey.currentState.save();
//TODO
}
}
}
FocusNode textSecondFocusNode = new FocusNode();
TextFormField textFirst = new TextFormField(
onFieldSubmitted: (String value) {
FocusScope.of(context).requestFocus(textSecondFocusNode);
},
);
TextFormField textSecond = new TextFormField(
focusNode: textSecondFocusNode,
);
// render textFirst and textSecond where you want
I am writing a scanner app where the app will be installed on a Scanner that runs Android.
Inside the app there is a TextFormField waiting the input scan or paste in the text inside to do other API call.
However I do not find any option for TextFormField to disable the soft keyboard but still can accept input text
Below is my scanner TextFormField widget code that I have tried.
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
class BuildScannerBar extends StatefulWidget {
final Function onFieldSubmitted;
final TextEditingController textFieldController;
final String labelText, hintText;
final bool disableKeyboard;
BuildScannerBar({
#required this.textFieldController,
#required this.onFieldSubmitted,
this.disableKeyboard = true,
this.labelText = 'Barcode Scan',
this.hintText = '',
});
#override
_BuildScannerBarState createState() => _BuildScannerBarState();
}
class _BuildScannerBarState extends State<BuildScannerBar> {
#override
Widget build(BuildContext context) {
return Align(
alignment: Alignment.topCenter,
child: Container(
height: 75,
margin: EdgeInsets.only(top: 50),
width: 300
decoration: BoxDecoration(
color: Colors.white,
),
child: ListTile(
title: TextFormField(
controller: widget.textFieldController,
decoration: InputDecoration(
border: InputBorder.none,
labelText: widget.labelText,
hintText: widget.hintText,
onTap: () {
SystemChannels.textInput.invokeMethod('TextInput.hide');
},
onFieldSubmitted: widget.onFieldSubmitted),
),
),
);
}
}
//Create a custom Textfield Widget extending editable:
//=====CUSTOM WIDGET TO HIDE KEYBOARD WHILE ACCEPTING VALUE FOR BARCODE CODE SCANNER DEVICE =====//
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
class TextFieldWithNoKeyboard extends EditableText {
TextFieldWithNoKeyboard(
{#required TextEditingController controller,
#required TextStyle style,
#required Function onValueUpdated,
#required Color cursorColor,
bool autofocus = false,
Color selectionColor})
: super(
controller: controller,
focusNode: TextfieldFocusNode(),
style: style,
cursorColor: cursorColor,
autofocus: autofocus,
selectionColor: selectionColor,
backgroundCursorColor: Colors.black,
onChanged: (value) {
onValueUpdated(value);
});
#override
EditableTextState createState() {
return TextFieldEditableState();
}
}
//This is to hide keyboard when user tap on textfield.
class TextFieldEditableState extends EditableTextState {
#override
void requestKeyboard() {
super.requestKeyboard();
//hide keyboard
SystemChannels.textInput.invokeMethod('TextInput.hide');
}
}
// This hides keyboard from showing on first focus / autofocus
class TextfieldFocusNode extends FocusNode {
#override
bool consumeKeyboardToken() {
return false;
}
}
// Use this custom widget in your screen by replacing TextField //with, TextFieldWithNoKeyboard
//=====Below is example to use in your screen ==//
class QRCodeScanner extends StatefulWidget {
QRCodeScanner({Key key}) : super(key: key);
#override
_QRCodeScannerState createState() => _QRCodeScannerState();
}
class _QRCodeScannerState extends State<QRCodeScanner> {
TextEditingController scanController = TextEditingController();
#override
Widget build(BuildContext context) {
return Scaffold(
body: Container(
child: TextFieldWithNoKeyboard(
controller: scanController,
autofocus: true,
cursorColor: Colors.green,
style: TextStyle(color: Colors.black),
onValueUpdated: (value) {
print(value);
},
),
),
);
}
}
Just set readOnly to true, and keyboardType to TextInputType.none as shown in the code bellow :
TextFormField(
keyboardType: TextInputType.none,
readOnly: true,
....
Juste add
// readOnly: true
TextFormField(
readOnly: true
controller: widget.textFieldController,
decoration: InputDecoration(
border: InputBorder.none,
labelText: widget.labelText,
hintText: widget.hintText,
onTap: () {
SystemChannels.textInput.invokeMethod('TextInput.hide');
},
onFieldSubmitted: widget.onFieldSubmitted),
),
everyone.
I am using Form and TextFieldForm without any own TextEditController. Have 3 TextFieldForm (Value_1, Value_2, Total) with initial values. When i am editing first one, the Total textfield should contain result of calculation . To update widget i am using setState. The problem that variable _total and Text widget always has a correct calculation value, but the Total textfield does not want to update.
why? is it posible to do without using own TextEditController?
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
home: TestForm(),
);
}
}
class TestForm extends StatefulWidget {
#override
_TestFormState createState() => _TestFormState();
}
class _TestFormState extends State<TestForm> {
GlobalKey<FormState> _formKey = GlobalKey();
int _value1 = 0;
int _value2 = 20;
int _total = 0;
#override
Widget build(BuildContext context) {
print('rebuild');
return Scaffold(
appBar: AppBar(title: Text('test form')),
body: Padding(
padding: const EdgeInsets.all(16.0),
child: Form(
key: _formKey,
child: ListView(
children: <Widget>[
TextFormField(
initialValue: _value1.toString(),
decoration: InputDecoration(
labelText: 'Value_1',
),
keyboardType: TextInputType.number,
onChanged: (value) {
setState(() {
_total = int.parse(value) * _value2;
print('total: ' + _total.toString());
});
},
),
TextFormField(
initialValue: _value2.toString(),
keyboardType: TextInputType.number,
decoration: InputDecoration(
labelText: 'Value_2',
),
),
TextFormField(
initialValue: _total.toString(),
keyboardType: TextInputType.number,
decoration: InputDecoration(
labelText: 'Total',
),
),
SizedBox(height: 20),
Text('total: ' + _total.toString()),
],
),
),
),
);
}
}
If you have a reactive data source, aka data that can change based on either network updates or other data, one hack that worked for me was to use a Key.
By making a Key of the reactive data (toString()), the form field will change every time the Key changes.
So in this case you could do:
TextFormField(
key: Key(_total.toString()), // <- Magic!
initialValue: _total.toString(),
keyboardType: TextInputType.number,
decoration: InputDecoration(
labelText: 'Total',
),
),
I used something as simple as this:
TextFormField(
controller: TextEditingController()..text = '23232',
keyboardType: TextInputType.number,
decoration: InputDecoration(
labelText: 'Total',
),
),
I'm unable to find a way to create an input field in Flutter that would open up a numeric keyboard and should take numeric input only. Is this possible with Flutter material widgets? Some GitHub discussions seem to indicate this is a supported feature but I'm unable to find any documentation about it.
You can specify the number as keyboardType for the TextField using:
keyboardType: TextInputType.number
Check my main.dart file
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
),
],
)),
);
}
}
For those who are looking for making TextField or TextFormField accept only numbers as input, try this code block :
for flutter 1.20 or newer versions
TextFormField(
controller: _controller,
keyboardType: TextInputType.number,
inputFormatters: <TextInputFormatter>[
// for below version 2 use this
FilteringTextInputFormatter.allow(RegExp(r'[0-9]')),
// for version 2 and greater youcan also use this
FilteringTextInputFormatter.digitsOnly
],
decoration: InputDecoration(
labelText: "whatever you want",
hintText: "whatever you want",
icon: Icon(Icons.phone_iphone)
)
)
for earlier versions of 1.20
TextFormField(
controller: _controller,
keyboardType: TextInputType.number,
inputFormatters: <TextInputFormatter>[
WhitelistingTextInputFormatter.digitsOnly
],
decoration: InputDecoration(
labelText:"whatever you want",
hintText: "whatever you want",
icon: Icon(Icons.phone_iphone)
)
)
Through this option you can strictly restricted another char with out number.
inputFormatters: [WhitelistingTextInputFormatter.digitsOnly],
keyboardType: TextInputType.number,
For using above option you have to import this
import 'package:flutter/services.dart';
using this kind of option user can not paste char in a textfield
Set the keyboard and a validator
String numberValidator(String value) {
if(value == null) {
return null;
}
final n = num.tryParse(value);
if(n == 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
To avoid paste not digit value, add after
keyboardType: TextInputType.number
this code :
inputFormatters: [FilteringTextInputFormatter.digitsOnly]
from https://api.flutter.dev/flutter/services/FilteringTextInputFormatter-class.html
For those who need to work with money format in the text fields:
To use only: , (comma) and . (period)
and block the symbol: - (hyphen, minus or dash)
as well as the: ⌴ (blank space)
In your TextField, just set the following code:
keyboardType: TextInputType.numberWithOptions(decimal: true),
inputFormatters: [BlacklistingTextInputFormatter(new RegExp('[\\-|\\ ]'))],
The simbols hyphen and space will still appear in the keyboard, but will become blocked.
If you need to use a double number:
keyboardType: TextInputType.numberWithOptions(decimal: true),
inputFormatters: [FilteringTextInputFormatter.allow(RegExp('[0-9.,]')),],
onChanged: (value) => doubleVar = double.parse(value),
RegExp('[0-9.,]') allows for digits between 0 and 9, also comma and dot.
double.parse() converts from string to double.
Don't forget you need:
import 'package:flutter/services.dart';
The TextField widget is required to set keyboardType: TextInputType.number,
and inputFormatters: <TextInputFormatter>[FilteringTextInputFormatter.digitsOnly] to accept numbers only as input.
TextField(
keyboardType: TextInputType.number,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.digitsOnly
], // Only numbers can be entered
),
Example in DartPad
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
void main() => runApp(new MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
home: HomePage(),
theme: ThemeData(primarySwatch: Colors.blue),
);
}
}
class HomePage extends StatefulWidget {
#override
State<StatefulWidget> createState() {
return HomePageState();
}
}
class HomePageState extends State<HomePage> {
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.white,
body: Container(
padding: const EdgeInsets.all(40.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text("This Input accepts Numbers only"),
SizedBox(height: 20),
TextField(
decoration: InputDecoration(
focusedBorder: OutlineInputBorder(
borderSide:
BorderSide(color: Colors.greenAccent, width: 5.0),
),
enabledBorder: OutlineInputBorder(
borderSide: BorderSide(color: Colors.red, width: 5.0),
),
hintText: 'Mobile Number',
),
keyboardType: TextInputType.number,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.digitsOnly
], // Only numbers can be entered
),
SizedBox(height: 20),
Text("You can test be Typing"),
],
)),
);
}
}
You can use this two attributes together with TextFormField
TextFormField(
keyboardType: TextInputType.number
inputFormatters: [WhitelistingTextInputFormatter.digitsOnly],
It's allow to put only numbers, no thing else ..
https://api.flutter.dev/flutter/services/TextInputFormatter-class.html
As the accepted answer states, specifying keyboardType triggers a numeric keyboard:
keyboardType: TextInputType.number
Other good answers have pointed out that a simple regex-based formatter can be used to allow only whole numbers to be typed:
inputFormatters: [
FilteringTextInputFormatter.allow(RegExp(r'[0-9]')),
],
The problem with this is that the regex only matches one symbol at a time, so limiting the number of decimal points (e.g.) cannot be achieved this way.
Also, others have also shown that if one wants validation for a decimal number, it can be achieved by using a TextFormField and it's validator parameter:
new TextFormField(
keyboardType: TextInputType.number,
validator: (v) => num.tryParse(v) == null ? "invalid number" : null,
...
The problem with this is that it cannot be achieved interactively, but only at form submission time.
I wanted to allow only decimal numbers to be typed, rather than validated later. My solution is to write a custom formatter leveraging int.tryParse:
/// Allows only decimal numbers to be input.
class DecimalNumberFormatter extends TextInputFormatter {
#override
TextEditingValue formatEditUpdate(
TextEditingValue oldValue, TextEditingValue newValue) {
// Allow empty input and delegate formatting decision to `num.tryParse`.
return newValue.text != '' && num.tryParse(newValue.text) == null
? oldValue
: newValue;
}
}
Alternatively, one can use a regex for the custom formatter, which would apply to the whole input, not just a single symbol:
/// Allows only decimal numbers to be input. Limits decimal plates to 3.
class DecimalNumberFormatter extends TextInputFormatter {
#override
TextEditingValue formatEditUpdate(
TextEditingValue oldValue, TextEditingValue newValue) {
// Allow empty input.
if (newValue.text == '') return newValue;
// Regex: can start with zero or more digits, maybe followed by a decimal
// point, followed by zero, one, two, or three digits.
return RegExp('^\\d*\\.?\\d?\\d?\\d?\$').hasMatch(newValue.text)
? newValue
: oldValue;
}
}
This way, I can also limit the number of decimal plates to 3.
Number type only
keyboardType: TextInputType.number
And more option with number pad
keyboardType: TextInputType.numberWithOptions(decimal: true,signed: false)
Just add this to your TextFormField
keyboardType: TextInputType.number,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.allow(RegExp(r'[0-9]')), ],
Example,
TextFormField(
controller: textController,
onChanged: (value) {
print(value);
},
keyboardType: TextInputType.number,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.allow(RegExp(r'[0-9]')),
],
),
Here is code for actual Phone keyboard on Android:
Key part: keyboardType: TextInputType.phone,
TextFormField(
style: TextStyle(
fontSize: 24
),
controller: _phoneNumberController,
keyboardType: TextInputType.phone,
decoration: InputDecoration(
prefixText: "+1 ",
labelText: 'Phone number'),
validator: (String value) {
if (value.isEmpty) {
return 'Phone number (+x xxx-xxx-xxxx)';
}
return null;
},
),
You can try this:
TextFormField(
keyboardType: TextInputType.number,
decoration: InputDecoration(
prefixIcon: Text("Enter your number: ")
),
initialValue: "5",
onSaved: (input) => _value = num.tryParse(input),
),
For number input or numeric keyboard you can use keyboardType: TextInputType.number
TextFormField(
decoration: InputDecoration(labelText:'Amount'),
controller: TextEditingController(
),
validator: (value) {
if (value.isEmpty) {
return 'Enter Amount';
}
},
keyboardType: TextInputType.number
)
You can add input format with keyboard type, like this
TextField(
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.digitsOnly
],// Only numbers can be entered
keyboardType: TextInputType.number,
);
You can Easily change the Input Type using the keyboardType Parameter
and you have a lot of possibilities check the documentation TextInputType
so you can use the number or phone value
new TextField(keyboardType: TextInputType.number)
keyboardType: TextInputType.number would open a num pad on focus, I would clear the text field when the user enters/past anything else.
keyboardType: TextInputType.number,
onChanged: (String newVal) {
if(!isNumber(newVal)) {
editingController.clear();
}
}
// Function to validate the number
bool isNumber(String value) {
if(value == null) {
return true;
}
final n = num.tryParse(value);
return n!= null;
}
Set your keyboardType to TextInputType.number,
Eg: 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;
},
),
I need en IntegerFormField with a controll of min/max. And the big problem is that OnEditingComlete is not called when the focus changes. Here is my solution:
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:vs_dart/vs_dart.dart';
class IntegerFormField extends StatefulWidget {
final int value, min, max;
final InputDecoration decoration;
final ValueChanged<TextEditingController> onEditingComplete;
IntegerFormField({#required this.value, InputDecoration decoration, onEditingComplete, int min, int max})
: min = min ?? 0,
max = max ?? maxIntValue,
onEditingComplete = onEditingComplete ?? ((_) {}),
decoration = decoration ?? InputDecoration()
;
#override
_State createState() => _State();
}
class _State extends State<IntegerFormField> {
final TextEditingController controller = TextEditingController();
#override
void initState() {
super.initState();
controller.text = widget.value.toString();
}
#override
void dispose() {
super.dispose();
}
void onEditingComplete() {
{
try {
if (int.parse(controller.text) < widget.min)
controller.text = widget.min.toString();
else if (int.parse(controller.text) > widget.max)
controller.text = widget.max.toString();
else
FocusScope.of(context).unfocus();
} catch (e) {
controller.text = widget.value.toString();
}
widget.onEditingComplete(controller);
}
}
#override
Widget build(BuildContext context) {
return Focus(
child: TextFormField(
controller: controller,
inputFormatters: [FilteringTextInputFormatter.digitsOnly],
keyboardType: TextInputType.number,
decoration: widget.decoration,
),
onFocusChange: (value) {
if (value)
controller.selection = TextSelection(baseOffset: 0, extentOffset: controller.value.text.length);
else
onEditingComplete();
},
);
}
}
U can Install package intl_phone_number_input
dependencies:
intl_phone_number_input: ^0.5.2+2
and try this code:
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();
}
}
Here is code for numeric keyboard :
keyboardType: TextInputType.phone When you add this code in textfield it will open numeric keyboard.
final _mobileFocus = new FocusNode();
final _mobile = TextEditingController();
TextFormField(
controller: _mobile,
focusNode: _mobileFocus,
maxLength: 10,
keyboardType: TextInputType.phone,
decoration: new InputDecoration(
counterText: "",
counterStyle: TextStyle(fontSize: 0),
hintText: "Mobile",
border: InputBorder.none,
hintStyle: TextStyle(
color: Colors.black,
fontSize: 15.0.
),
),
style: new TextStyle(
color: Colors.black,
fontSize: 15.0,
),
);
Here is code for actual Phone keyboard in Flutter:
//Mobile
const TextField(
keyboardType: TextInputType.number,
decoration: InputDecoration(
prefixIcon: Icon(Icons.phone), hintText: 'Mobile'),
),
Here are all details on how to add numeric keybord, How to do validations, How to add stylings, and other stuff in dart/flutter.
I hope it can help you to learn in a better way.
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,
),
),
),
TextField(
controller: _controller,
keyboardType: TextInputType.number,
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.allow(RegExp(r'[0.0-9.9]')),
])
You need to add the line
keyboardType: TextInputType.phone,
Within the block "TextFormField". Example below:
TextField(
controller: _controller,
keyboardType: TextInputType.phone,
),
It should look like this: