Signal strength query returned error: Error Domain=NSPOSIXErrorDomain Code=13 "Permission denied"...

Signal strength query returned error: ErrorDomain=NSPOSIXErrorDomain
Code=13 "Permission denied", 
descriptor: 

在 edit scheme -> Run -> Environment Variables 添加 OS_ACTIVITY_MODE disable,如下图。是xcode的问题

如图所示.png

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