How can I change the labels of the Continue/Cancel buttons in flutter stepper?

Issue

Is there any way to change the text labels of the Continue and Cancel Buttons of the stepper in flutter? Stepper seems to be the perfect choice for what I want to do (long form with several "stages") and before I go try to build one from scratch just to get other labels for the buttons I thought I may ask..

Anybody knows if/how thats possible?

Solution

Yes, you can by providing a controlsBuilder callback. Which has to be a function that takes two other functions (onStepContinue and onStepCancel) which are the actions that you will have to pass to the new buttons you'll create in order for them to act as they should.

Then you can declare anything you want (in this case a row with two buttons) as long you pass the two functions (onStepContinue and onStepCancel) for them to work as its expected:

Stepper(
      controlsBuilder: (BuildContext context,
          {VoidCallback? onStepContinue, VoidCallback? onStepCancel}) {
        return Row(
          children: <Widget>[
            TextButton(
              onPressed: onStepContinue,
              child: const Text('NEXT'),
            ),
            TextButton(
              onPressed: onStepCancel,
              child: const Text('EXIT'),
            ),
          ],
        );
      },
      steps: const <Step>[
        Step(
          title: Text('A'),
          content: SizedBox(
            width: 100.0,
            height: 100.0,
          ),
        ),
        Step(
          title: Text('B'),
          content: SizedBox(
            width: 100.0,
            height: 100.0,
          ),
        ),
      ],
    );

Answered By - pedro pimont