问题
I'm using Xcode 6 GM Seed (build 6A313) with iPhone 5s (Model A1530, iOS 8 build 12A365). I connect the iPhone via USB lightning cable. But in Xcode, it shows as: "iPhone 5s (unavailable)".
Further investigation: I open Xcode menu > Window > Devices, it shows the following error:
An error was encountered while enabling development on this device.
Please try rebooting and reconnecting the device. (0xE8000070)
I reboot and reconnect my iPhone 5s, the same error is shown. This device was used for development in previous Xcode 5, and shows no problem at all.
What should I do? I want to try my apps in iOS 8 device.
回答1:
If you are using Xcode-beta 7.1 and want to run app on iOS 9.0 like me you will also get the same error. The solution is:
- Use corresponding iOS 9.1-beta.
- Use Xcode 7.0
- Run on simulator.
回答2:
The problem is resolved after I updated iTunes to version 11.4 via Software Updates.
The Xcode error message is misleading.
回答3:
In my case, during 2 years developing, my phone has several test app with name (null). you can only see a default Xcode app icon in app list in Setting. I had tried updating Xcode, but not work. finally I delete these null name apps, then Xcode - device can connect it without warning sign. Run test app won't get the error in question. only my case. share it in case you encounter in future.
来源：https://stackoverflow.com/questions/25785281/xcode-6-gm-with-iphone-5s-ios-8-gm-0xe8000070