I can't add it and there's no debug optimization, yet I got the log:
ProjectName was compiled with optimization - stepping may behave oddly; variables may not be available.
More info: I went to the edit build scheme and it's set as debug mode.
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):
问题:
回答1:
It looks like you've accidentally deleted your debug configuration. To prove this to yourself, look at your project's Info pane. You should see this ― but I'm betting you won't:
A configuration is just a name, so you can easily recreate the debug configuration right here in the project settings; but that won't magically restore all the corresponding default build setting values. Your best bet is to consider this project hosed: make a new project, to get the template's values for the build settings, and migrate everything from this project into it.