Positional arguments must occur before named arugments, And Too many positional arguments on flutter
103
Solution 1
Change the name of class as your class name, I created TextFormField below the name
import 'package:flutter/material.dart';
class TabScreen extends StatefulWidget {
const TabScreen({Key? key}) : super(key: key);
@override
_TabScreenState createState() => _TabScreenState();
}
class _TabScreenState extends State<TabScreen> {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
leading: IconButton(onPressed: () {}, icon: Icon(Icons.exit_to_app)),
),
body: SingleChildScrollView(
child: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
Column(
children: [
Padding(
padding: EdgeInsets.symmetric(
vertical: 35.0,
),
child: Text(
'Forgot Password',
style: TextStyle(
color: Colors.blue,
fontWeight: FontWeight.bold,
fontSize: 20.0),
),
),
Padding(
padding: EdgeInsets.fromLTRB(0, 12, 0, 0),
child: Container(
child: Icon(Icons.exit_to_app),
),
),
],
),
Container(
height: 440.0,
color: Colors.transparent,
child: Container(
decoration: new BoxDecoration(
color: Colors.blue,
borderRadius: new BorderRadius.only(
topLeft: const Radius.circular(40.0),
topRight: const Radius.circular(40.0),
)),
child: new Align(
alignment: Alignment.topCenter,
child: Padding(
padding: EdgeInsets.symmetric(vertical: 40),
child: Column(
children: [
Text(
'Masukkan Email',
style: TextStyle(
color: Colors.white,
fontSize: 14,
fontWeight: FontWeight.bold),
),
Container(
margin: EdgeInsets.all(15),
child: TextFormField(showCursor: true, cursorColor: Colors.white,
style: TextStyle(
fontSize: 18,
color: Colors.white,
fontWeight: FontWeight.w600,
),
decoration: InputDecoration(
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(10.0),
),
focusColor: Colors.white,
focusedBorder: OutlineInputBorder(
borderSide:
const BorderSide(color: Colors.black, width: 1.0),
borderRadius: BorderRadius.circular(10.0),
),
// fillColor: Colors.grey,
hintText: "Email",
),
),
),
],
),
// sizedBox(height: 20,)
),
),
),
)
],
),
),
),
);
}
}
Solution 2
use this code, it will work
import 'package:flutter/material.dart';
class ForgotPassword extends StatefulWidget {
const ForgotPassword({Key? key}) : super(key: key);
@override
_ForgotPasswordState createState() => _ForgotPasswordState();
}
class _ForgotPasswordState extends State<ForgotPassword> {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
leading: IconButton(onPressed: () {}, icon: Icon(Icons.exit_to_app)),
),
body: SingleChildScrollView(
child: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
Padding(
padding: EdgeInsets.symmetric(
vertical: 35.0,
),
child: Text(
'Forgot Password',
style: TextStyle(
color: Colors.blue,
fontWeight: FontWeight.bold,
fontSize: 20.0),
),
),
Padding(
padding: EdgeInsets.fromLTRB(0, 12, 0, 0),
child: Container(
child: Image.asset('assets/forgot password 1.png'),
),
),
new Container(
height: 440.0,
color: Colors.transparent,
child: Container(
decoration: new BoxDecoration(
color: Colors.blue,
borderRadius: new BorderRadius.only(
topLeft: const Radius.circular(40.0),
topRight: const Radius.circular(40.0),
)),
child: new Align(
alignment: Alignment.topCenter,
child: Column(
children: [
Padding(
padding: EdgeInsets.symmetric(vertical: 40),
child: Text(
'Masukkan Email',
style: TextStyle(
color: Colors.white,
fontSize: 14,
fontWeight: FontWeight.bold),
),
),
TextFormField(.....)
],
),
),
),
),
SizedBox(
height: 20,
)
],
),
),
),
);
}
}
Author by
Imam Rizky GANTENG
Updated on January 01, 2023Comments
-
Imam Rizky GANTENG over 1 year
I had some error that says "Positional arguments must occur before named arguments" and " too many positional arguments" when i wanted to add an textformfield on my code, the design will looks like this
I need put the textformfield below the text how do i add the textformfield without making any error?
heres my code
import 'package:flutter/material.dart'; class ForgotPassword extends StatefulWidget { const ForgotPassword({Key? key}) : super(key: key); @override _ForgotPasswordState createState() => _ForgotPasswordState(); } class _ForgotPasswordState extends State<ForgotPassword> { @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( leading: IconButton(onPressed: () {}, icon: Icon(Icons.exit_to_app)), ), body: SingleChildScrollView( child: Center( child: Column( mainAxisAlignment: MainAxisAlignment.start, children: <Widget>[ Padding( padding: EdgeInsets.symmetric( vertical: 35.0, ), child: Text( 'Forgot Password', style: TextStyle( color: Colors.blue, fontWeight: FontWeight.bold, fontSize: 20.0), ), ), Padding( padding: EdgeInsets.fromLTRB(0, 12, 0, 0), child: Container( child: Image.asset('assets/forgot password 1.png'), ), ), new Container( height: 440.0, color: Colors.transparent, child: Container( decoration: new BoxDecoration( color: Colors.blue, borderRadius: new BorderRadius.only( topLeft: const Radius.circular(40.0), topRight: const Radius.circular(40.0), )), child: new Align( alignment: Alignment.topCenter, child: Padding( padding: EdgeInsets.symmetric(vertical: 40), child: Text( 'Masukkan Email', style: TextStyle( color: Colors.white, fontSize: 14, fontWeight: FontWeight.bold), ), sizedBox(height: 20,) ), ), ), ), ], ), ), ), ); } }-
Praveen Soni over 2 yearsat end, you passed sizedBox in padding, use column instead,
-
Imam Rizky GANTENG over 2 yearsno its same i cant add any column, container, child
-
-
Imam Rizky GANTENG over 2 yearsit showing error when adding sizedbox or child [like this] (imgur.com/a/weHnrGN)
-
Imam Rizky GANTENG over 2 yearsit put the textfield below the blue container, i wanted the textfield below the text
-
DimasGs over 2 yearsi've edited my answer, take a look
-
Rakesh Saini over 2 yearsTry this code in your class
