How do I supply an initial value to a text field?

Question

I\'d like to supply an initial value to a text field and redraw it with an empty value to clear the text. What\'s the best approach to do that with Flutter\'s APIs?

Answer 1

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.