How to unselect a radio button in flutter?

Question

I use a map for radio, a textfield, text that displays a result and a button for clear all.

The TextField can be erased :

RaisedButton(onPressed: () { _controllerTextField.clear();},
                  child: Text('Clear',style:Theme.of(context).textTheme.body2.merge(TextStyle(color: Colors.white)),),)

But i don't understand how to erase my Text and put my Radio on default deselected state.

More, when a radio is selected, I give it a custom color but I can not give the same color to the Radio icon.

Do you have an idea of ​​the method to use?

Thank you

Answer 1

Use Radio's toggleable property.

Documentation Set to true if this radio button is allowed to be returned to an indeterminate state by selecting it again when selected.