inside class,
final usernameController = TextEditingController(text: 'bhanuka');
TextField,
child: new TextField(
controller: usernameController,
...
)
TextEdittingController _controller = new TextEdittingController(text: "your Text");
or
@override
void initState() {
super.initState();
_Controller.text = "Your Text";
}
class _YourClassState extends State<YourClass> {
TextEditingController _controller = TextEditingController();
@override
void initState() {
super.initState();
_controller.text = 'Your message';
}
@override
Widget build(BuildContext context) {
return Container(
color: Colors.white,
child: TextFormField(
controller: _controller,
decoration: InputDecoration(labelText: 'Send message...'),
),
);
}
}
(From the mailing list. I didn't come up with this answer.)
class _FooState extends State<Foo> {
TextEditingController _controller;
@override
void initState() {
super.initState();
_controller = new TextEditingController(text: 'Initial value');
}
@override
Widget build(BuildContext context) {
return new Column(
children: <Widget>[
new TextField(
// The TextField is first built, the controller has some initial text,
// which the TextField shows. As the user edits, the text property of
// the controller is updated.
controller: _controller,
),
new RaisedButton(
onPressed: () {
// You can also use the controller to manipuate what is shown in the
// text field. For example, the clear() method removes all the text
// from the text field.
_controller.clear();
},
child: new Text('CLEAR'),
),
],
);
}
}
You can use a TextFormField
instead of TextField
, and use the initialValue
property. for example
TextFormField(initialValue: "I am smart")
If you want to handle multiple TextInput
s as asked by @MRT in the comment to the accepted answer, you can create a function that takes an initial value and returns a TextEditingController
like this:
initialValue(val) {
return TextEditingController(text: val);
}
Then, set this function as the controller for the TextInput
and supply its initial value there like this:
controller: initialValue('Some initial value here....')
You can repeat this for the other TextInput
s.
I've seen many ways of doing this on here. However I think this is a little more efficient or at least concise than the other answers.
TextField(
controller: TextEditingController(text: "Initial Text here"),
)
If you are using TextEditingController then set the text to it, like below
TextEditingController _controller = new TextEditingController();
_controller.text = 'your initial text';
final your_text_name = TextFormField(
autofocus: false,
controller: _controller,
decoration: InputDecoration(
hintText: 'Hint Value',
),
);
and if you are not using any TextEditingController then you can directly use initialValue like below
final last_name = TextFormField(
autofocus: false,
initialValue: 'your initial text',
decoration: InputDecoration(
hintText: 'Last Name',
),
);
For more reference TextEditingController
This can be achieved using TextEditingController
.
To have an initial value you can add
TextEditingController _controller = TextEditingController(text: 'initial value');
or
If you are using TextFormField
you have a initialValue
property there. Which basically provides this initialValue
to the controller automatically.
TextEditingController _controller = TextEditingController();
TextFormField(
controller: _controller,
initialValue: 'initial value'
)
To clear the text you can use
_controller.clear()
method.
You don't have to define a separate variable in the widget scope, just do it inline:
TextField(
controller: TextEditingController()..text = 'Your initial value',
onChanged: (text) => {},
)
Source: Stackoverflow.com