滑动时快速黑屏

Question

在主 vc 中(在主 Storyboard中，我有导航 Controller 和 View Controller )在加载所有设置(从服务器)后，我呈现新的 vc

DispatchQueue.main.async {
  var stor: UIStoryboard!
  stor = UIStoryboard(name: "Profile", bundle: nil)
  let viewcontroller = stor.instantiateViewController(withIdentifier: "profileVC")
  let nav = UINavigationController(rootViewController: viewcontroller)
  self.present(nav, animated: true, completion: nil)   
}

在profileVC中

navigationController?.interactivePopGestureRecognizer!.delegate = self // enable swipe to back

// present new vc
var stor: UIStoryboard!
stor = UIStoryboard(name: "Settings", bundle: nil)
let viewcontroller = stor.instantiateViewController(withIdentifier: "settingsVC")
self.navigationController?.pushViewController(viewcontroller, animated: true)

但有时我会黑屏 image (在profileVC中)和image (在从 profileVC 推送的另一个 vc 中)当滑动屏幕时

我该如何修复它？

Answer 1

我猜你已经清除了 super View 的颜色。仔细检查一下。当你清除 super View 的颜色时会发生这种情况。