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scrollView页面如何不影响屏幕左边缘返回手势
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| // 如果 UIViewController.view.addSubView(scrollView)，会导致屏幕左边缘的返回手势失效。 | |
| // 解决办法如下： | |
| if let ges = navigationController?.interactivePopGestureRecognizer { | |
| scrollView.panGestureRecognizer.require(toFail: ges) // 允许左边缘手势返回 | |
| } | |
| // 对于 UIPageViewController，可以先找到其 scrollView，再如法炮制 |
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