ios系统自带的左化返回上一级页面

首先遵循UIGestureRecognizerDelegate协议

    self.navigationController.interactivePopGestureRecognizer.enabled = YES;

    self.navigationController.interactivePopGestureRecognizer.delegate = self;

原文：http://www.cnblogs.com/xiaolingling1126/p/5083052.html