I downloaded https://github.com/zoom/sample-app-swift and it works well with me.
When trying to integrate it with our own app. We added the libraries and it is well, but when run join meeting, the output runs well but the screen on the video call not opens and I got this message in output
Warning: Attempt to present <ZMNavigationController: 0x7fa64d8c5c00> on <ConsulTrust.InitVC: 0x7fa64bf0dd80> whose view is not in the window hierarchy!
Hope to solve this issue. Thanks in advance.