Flutter TextFormField onChanged event

user_5902776 0
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I want to build autocomplete using TextFormField, I don't know how to create OnChanged event for TextFormField My requirement is there will be text field with some text, if user edits that text, textfield should behave like auto suggest.

flutter autocomplete
2 Answers

Lucky for us the onChanged option in the TextFormField is already available. If you update flutter and doesn't work just go to the text_form_field.dart file by clicking on the Widget TextFormField + command/control and modify the text with code in the link: text_form_field.dart

user_86311460

Are you wrapping TextFormField in a FormField widget? If not, I suggest to use just TextField which has an onChange property

Edit: To set an initial value you can add a TextEditingController and asign it to the TextFormField

TextEditingController _controller = TextEditingController();

then in initState() you can do

_controller.text = 'Initial Value'
user_85066480
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