flutter create dynamic TextField when button click
11,033
Solution 1
import 'package:flutter/material.dart';
void main() {
runApp(App());
}
class App extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Home(),
);
}
}
class Home extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: RaisedButton(
child: Text('Add entries'),
onPressed: () async {
List<PersonEntry> persons = await Navigator.push(
context,
MaterialPageRoute(
builder: (context) => SOF(),
),
);
if (persons != null) persons.forEach(print);
},
),
),
);
}
}
class SOF extends StatefulWidget {
@override
_SOFState createState() => _SOFState();
}
class _SOFState extends State<SOF> {
var nameTECs = <TextEditingController>[];
var ageTECs = <TextEditingController>[];
var jobTECs = <TextEditingController>[];
var cards = <Card>[];
Card createCard() {
var nameController = TextEditingController();
var ageController = TextEditingController();
var jobController = TextEditingController();
nameTECs.add(nameController);
ageTECs.add(ageController);
jobTECs.add(jobController);
return Card(
child: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Text('Person ${cards.length + 1}'),
TextField(
controller: nameController,
decoration: InputDecoration(labelText: 'Full Name')),
TextField(
controller: ageController,
decoration: InputDecoration(labelText: 'Age')),
TextField(
controller: jobController,
decoration: InputDecoration(labelText: 'Study/ job')),
],
),
);
}
@override
void initState() {
super.initState();
cards.add(createCard());
}
_onDone() {
List<PersonEntry> entries = [];
for (int i = 0; i < cards.length; i++) {
var name = nameTECs[i].text;
var age = ageTECs[i].text;
var job = jobTECs[i].text;
entries.add(PersonEntry(name, age, job));
}
Navigator.pop(context, entries);
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(),
body: Column(
children: <Widget>[
Expanded(
child: ListView.builder(
itemCount: cards.length,
itemBuilder: (BuildContext context, int index) {
return cards[index];
},
),
),
Padding(
padding: const EdgeInsets.all(16.0),
child: RaisedButton(
child: Text('add new'),
onPressed: () => setState(() => cards.add(createCard())),
),
)
],
),
floatingActionButton:
FloatingActionButton(child: Icon(Icons.done), onPressed: _onDone),
);
}
}
class PersonEntry {
final String name;
final String age;
final String studyJob;
PersonEntry(this.name, this.age, this.studyJob);
@override
String toString() {
return 'Person: name= $name, age= $age, study job= $studyJob';
}
}
Solution 2
You can use a List
for your controllers
.
For example:
class PersonControllers {
final TextEditingController name;
final TextEditingController age;
final TextEditingController job;
PersonControllers(this.name, this.age, this.job);
}
Then in your widget
final List<PersonControllers> personControllers = List<PersonControllers>();
In your initState
personControllers.add(PersonController(TextEditingController(),TextEditingController(),TextEditingController());
Create a buildCard
method:
Widget buildCard(PersonControllers controllers){
return Card(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(15.0),
),
elevation: 10,
child: Padding(
padding: EdgeInsets.only(top: 2.0, left: 6.0, right: 6.0, bottom: 2.0),
child: Column(
children: <Widget>[
Text('Person 1'),
SizedBox(height: 3.0),
_buildNameField(controllers.name),
SizedBox(height: 10.0),
_buildAgeField(controllers.age),
SizedBox(height: 10.0),
_buildJobField(controllers.job),
SizedBox(height: 10.0),
],
),
),
);
}
Finally in your build
method:
return Scaffold(
appBar: AppBar(
title: Text('New Entry'),
),
body: SingleChildScrollView(
child: Container(
child: Container(
color: Colors.white,
child: Padding(
padding: const EdgeInsets.all(15.0),
child: Column(
children: <Widget>[
...personControllers.map((personController) => _buildCard(personController),
SizedBox(
height: 10.0,
),
RaisedButton(
child: Text("Add"),
onPressed: (){
setState((){
personControllers.add(PersonController(
TextEditingController(),
TextEditingController(),
TextEditingController()
});
);
}
),
],
),
),
),
),
))
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Comments
-
Ashique bzq over 1 year
Here is my requirement, when I click the Add button, dynamically new cards with three TextFields should be generated, and how to assign each TextField with dynamically created TextEditingControllers> or is there any other way to take value from TextFields?
final name1 = new TextField( controller: name1Controller, decoration: InputDecoration( labelText: 'Full Name', border: OutlineInputBorder())); final age1 = new TextField( controller: age1Controler, keyboardType: TextInputType.number, decoration: InputDecoration(labelText: 'Age', border: OutlineInputBorder())); final studyjob1 = new TextField( controller: study1Controller, decoration: InputDecoration( labelText: 'Study / Job', border: OutlineInputBorder())); final person1Card = new Card( shape: RoundedRectangleBorder( borderRadius: BorderRadius.circular(15.0), ), elevation: 10, child: Padding( padding: EdgeInsets.only(top: 2.0, left: 6.0, right: 6.0, bottom: 2.0), child: Column( children: <Widget>[ Text('Person 1'), SizedBox(height: 3.0), name1, SizedBox(height: 10.0), age1, SizedBox(height: 10.0), studyjob1, SizedBox(height: 10.0), ], ), ), );
return Scaffold( appBar: AppBar( title: Text('New Entry'), ), body: SingleChildScrollView( child: Container( child: Container( color: Colors.white, child: Padding( padding: const EdgeInsets.all(15.0), child: Column( children: <Widget>[ person1Card, SizedBox( height: 10.0, ), saveButton ], ), ), ), ), ))
-
K.Amanov over 2 yearsdon't forget to dispose controllers ;-)
-
isso kd over 2 yearsHello ur code is perfect.. But can you help me.. I want all what u code but instead of 3 textfield i want 1 textfield and an image picker. And i want this image to be shown after capturing it immediatly so that an camera button if image = null else show image instead of camera button. What do u suggest me?