IOS Xcode new project startup black screen problem

1. Application scenarios

Xcode has been updated to 11.0, there is a new SceneDelegate file in the new project, sometimes there is a black screen, the solution is as follows:

2. Solutions:

• deleteSceneDelegatefile

• Deleting proxy methods

• addwindow

• deleteinfo.plistIn the fileApplication Scene Mainfestfile

• Add the windowRootViewControllerCan be