swift - 在Xcode 11.3 ViewController中崩溃

Question

获取错误::由于未捕获的异常'NSInternalInconsistencyException'而终止应用程序，原因:'从-traitCollection返回nil，这是不允许的。

这种方法崩溃了func carbonTabSwipeNavigation(_ carbonTabSwipeNavigation: CarbonTabSwipeNavigation, viewControllerAt index: UInt) -> UIViewController {
let sb = UIStoryboard.init(name: storybordname, bundle: nil)
var viewcontroller:UIViewController!
viewcontroller = sb.instantiateViewController(withIdentifier: controllername)
return viewcontroller
}当我在放置断点后检查时，其崩溃在第一行super.viewDidLoad()

Answer 1

将您的viewdidload代码放入disptachQueue

DispatchQueue.main.asyncAfter(deadline: .now() + 0.3, execute: {
               // Your Code
  })

像这样...