Answers for "Out of focus in TextField when pressing the screen flutter"

flutter unfocus textfield when click outside

return GestureDetector(
      onTap: () => FocusManager.instance.primaryFocus?.unfocus(),
      child: Scaffold(
        appBar: AppBar(
          title: Text('Login'),
        ),
        body: Body(),
      ),
    );

flutter unfocus textfield

FocusScope.of(context).unfocus();