问题
Can I debug my app on iOS 7 from Xcode 7?
From what I can tell Xcode 7 just ignores any plugged in devices with iOS 7 installed. Is this just a fluke or is this a permanent change to Xcode?
(Using: Xcode 7 beta 6, iPhone 4S iOS 7.1)
回答1:
The BAD news is that you can't test your app on iOS 7 simulators. At least not with Xcode 7.3.1. If you are using previous Xcode beta then you should check this answer.
The GOOD news is that you can test it on real device running iOS 7. I tested mine with Xcode 7.3.1 on iPhone 4 running iOS 7.1.2.
UPDATE: The only way I have found so far to test your app on iOS 7 simulators is by installing OS X 10.10 Yosemite and using Xcode 6 (tested with OS X 10.10.5 and Xcode 6.4) side by side with Xcode 7.
UPDATE: Xcode version updated to 7.3.1.
回答2:
The Xcode 7 beta does not support iOS 7.
It's not necessarily a permanent change, but the general way that the beta works.
Once Xcode 7 is released, the earlier runtimes may be supported, and you will be able to test on devices that are running older releases.
来源：https://stackoverflow.com/questions/32363456/can-i-debug-my-app-on-ios-7-from-xcode-7