推送和弹出视图控制器 - 动画

I'm using a navigation controller for my app, because a lot of my views are hierarchical. However, I want to push a settings view when someone presses a button. However, I don't want to animate right to left, since I don't want to give the impression to the user that settings are a child of the view below it in the stack.I'm using a navigation controller for my app, b