Android : How can I get rid of the animation when resetting my app?

I want to have a menu button that allows the user to reset the app. As I've read that I shouldn't call onCreate() manually, I use the following code instead:

Intent intent = getIntent();
finish();
startActivity(intent);

My problem is that this triggers an animation where the window disappears and appears again, which I don't want to happen. How can I get rid of that?