Flutter – Unable to use setState() in TextButton

Why cannot I use setState in any of my buttons in flutter?
This is my code of the button:

TextButton(
                              style: TextButton.styleFrom(
                                fixedSize: Size(
                                    MediaQuery.of(context).size.width / 2, 100),
                              ),
                              onPressed: setState(() {
                                logPage = false;
                              }),
                              child: const Text(
                                "Sign Up",
                                style: TextStyle(fontSize: 20),
                              ),
                            )

but the setState command is underlined and Android Studio says:
This expression has a type of 'void' so its value can't be used.

I would like to change the variable and rebuild my app page to get it updated and it should show changes.

>Solution :

Try this:

onPressed: () => setState(() {
  logPage = false;
}),