Flutter - how to add done button in number keyboard in flutter - dart

Question

I am trying to add done button in number type input for a TextFormField in flutter but I could not able to do that.
TextFormField(
key: Key(keyValue),
initialValue: valueBuilder,
onSaved: (text) {
fieldsController.text = text.trim();
},
inputFormatters: [inputFormatters],
keyboardType: TextInputType.phoneNumber,)
I want create a keyboard like the below. For the input text form field.

Answer 1

Change
keyboardType: TextInputType.number
to
keyboardType: TextInputType.numberWithOptions(signed: true, decimal: true)

Answer 2

You don't need a done button just wrap MaterialApp with a GestureDetector
GestureDetector(
behavior: HitTestBehavior.opaque,
onTap: () {
FocusScopeNode currentFocus = FocusScope.of(context);
if (!currentFocus.hasPrimaryFocus &&
currentFocus.focusedChild != null) {
FocusManager.instance.primaryFocus.unfocus();
}
},
child: MaterialApp(
title: "My title",
home:MyHomeScreen(),
),
);

Answer 3

I've just created a package for add basic actions to the current keyboards .
You can take a look here :
https://pub.dartlang.org/packages/keyboard_actions
Usage :
import 'package:flutter/material.dart';
import 'package:keyboard_actions/keyboard_actions.dart';
//...
FocusNode _nodeText1 = FocusNode();
FocusNode _nodeText2 = FocusNode();
FocusNode _nodeText3 = FocusNode();
FocusNode _nodeText4 = FocusNode();
FocusNode _nodeText5 = FocusNode();
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text("Keyboard Actions Sample"),
),
body: FormKeyboardActions(
keyboardActionsPlatform: KeyboardActionsPlatform.ALL, //optional
keyboardBarColor: Colors.grey[200], //optional
nextFocus: true, //optional
actions: [
KeyboardAction(
focusNode: _nodeText1,
),
KeyboardAction(
focusNode: _nodeText2,
closeWidget: IconButton(
icon: Icon(Icons.close),
onPressed: () {},
),
),
KeyboardAction(
focusNode: _nodeText3,
onTapAction: () {
showDialog(
context: context,
builder: (context) {
return AlertDialog(
content: Text("Custom Action"),
actions: <Widget>[
FlatButton(
child: Text("OK"),
onPressed: () => Navigator.of(context).pop(),
)
],
);
});
},
),
KeyboardAction(
focusNode: _nodeText4,
displayCloseWidget: false,
),
KeyboardAction(
focusNode: _nodeText5,
closeWidget: Padding(
padding: EdgeInsets.all(5.0),
child: Text("CLOSE"),
),
),
],
child: Padding(
padding: const EdgeInsets.all(15.0),
child: SingleChildScrollView(
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
TextField(
keyboardType: TextInputType.number,
focusNode: _nodeText1,
decoration: InputDecoration(
hintText: "Input Number",
),
),
TextField(
keyboardType: TextInputType.text,
focusNode: _nodeText2,
decoration: InputDecoration(
hintText: "Input Text with Custom Close Widget",
),
),
TextField(
keyboardType: TextInputType.number,
focusNode: _nodeText3,
decoration: InputDecoration(
hintText: "Input Number with Custom Action",
),
),
TextField(
keyboardType: TextInputType.text,
focusNode: _nodeText4,
decoration: InputDecoration(
hintText: "Input Text without Close Widget",
),
),
TextField(
keyboardType: TextInputType.number,
focusNode: _nodeText5,
decoration: InputDecoration(
hintText: "Input Number with Custom Close Widget",
),
),
],
),
),
),
),
);
}

Answer 4

add this to your TextField
TextField(
...
keyboardType: TextInputType.numberWithOptions(signed: true),
inputFormatters: [
FilteringTextInputFormatter.digitsOnly,
],
...
),

Answer 5

This is how to add Done button to your TextFormField when keyboard is opened:
textInputAction: TextInputAction.done,
Please keep in mind that iOS doesn’t support Done on NUMERIC keyboards.

Answer 6

I used this way to handle done button in IOS
keyboardType: Platform.isIOS?
TextInputType.numberWithOptions(signed: true, decimal: true)
: TextInputType.number,
// This regex for only amount (price). you can create your own regex based on your requirement
inputFormatters: [FilteringTextInputFormatter.allow(RegExp(r'^\d+\.?\d{0,4}'))],

Answer 7

There is no done button in ios keyboard. Solution is that use "keyboard_actions" plugin otherwise add layout top of keyboard check this
https://blog.usejournal.com/keyboard-done-button-ux-in-flutter-ios-app-3b29ad46bacc

Answer 8

I used the signed option to display the done button. Then I used a TextInputFormatter with a RegEx to limit what the user can input.
new TextFormField(
controller: myController,
keyboardType: TextInputType.numberWithOptions(signed:true, decimal: true),
textInputAction: TextInputAction.done,
onFieldSubmitted: (term) {
_showSnackBar(context, double.parse(myController.text));
},
onEditingComplete: () {
_showSnackBar(context, double.parse(myController.text));
},
decoration: const InputDecoration(
helperText: "Actual",
hintText: "Units used",
border: UnderlineInputBorder(),
icon: Icon(Icons.keyboard),
),
inputFormatters: <TextInputFormatter>[
FilteringTextInputFormatter.allow(RegExp(r'^\d*\.?\d*$')),
],
),

Answer 9

There is no done button in iOS but we can check the length of the input and clear focus to hide the numberpad keyboard.
Implement like below,(it'll work with fix length of number value)
onChanged: (val) {
if (val.length == 10) { //10 is the length of the phone number you're allowing
FocusScope.of(context).requestFocus(FocusNode());
}
}