在segue上添加到UIView或UIViewController的滑动手势

I'm completely stumped by this. I've been working on a project that has both a landscape view and portrait view. I segue from one view controller to another, and the 2nd view controller has a UIView that allows custom drawing. However, when I'm in landscape mode (and only when in landscape mode), I'm unable to draw in the view (with touches... functions) because when I'm in the left half of the view and I drag towards the left side of the screen, I get taken back to the previous view controller.I'm completely stumped by this. I've been worki