您可以模态地呈现视图控制器.在这种情况下，顶部不显示时间.但是，您应该注意以下App Store 审核指南::>

主要功能是报时的手表应用将被拒绝

I want to create an app that displays the time. This makes the time in the header redundant.

You may present a view controller modally. In this case, no time is displayed at the top. However, you should be aware of the following App Store Review Guideline:

Watch Apps whose primary function is telling time will be rejected