Flutter OutlineButton 修改高度和宽度

How to change outline button size

Positioned(
              right: 0,
              bottom: -10,
              child: OutlinedButton(
                style: ButtonStyle(
                  backgroundColor: MaterialStateProperty.all(Colors.blueAccent),
                  shape: MaterialStateProperty.all(
                    RoundedRectangleBorder(
                      borderRadius: BorderRadius.circular(18),
                    ),
                  ),
                  minimumSize: MaterialStateProperty.all(const Size(0, 22)),
                ),
                onPressed: () {},
                child: const Text(
                  'Test',
                  style: const TextStyle(
                    color: Colors.white,
                    fontSize: 12,
                  ),
                ),
              ),
            ),