For the release of Xcode8, Apple also came a big jump, The default minimum supported iOS version is 8.0, of course, it is not said that 8.0 below directly give up, although the performance is so, after all, the use of 8.0 or less system is still a few, the old project to be compatible with iOS8 below can also be a way out.
First we want to find out what Xcode is compatible with iOS version, please open the following path:/applications/xcode.app/contents/developer/platforms/iphoneos.platform/ Devicesupport, in the folder we can see the iOS version supported by Xcode, Starting from 8.0, but there is no less than 8.0, so our first step is to have to support the iOS version of the configuration package, bloggers support to 7.0, including 7.1, download the configuration package address see: Download the Real machine configuration package, download it and drag it in.
Here is not the end, next you need to configure Xcode to open the following path:/applications/xcode.app/contents/developer/platforms/iphoneos.platform/developer/ Sdks/iphoneos.sdk
, here we want to pity dorado things, but in this folder is locked, first right ' blank section ', click to show Introduction, swipe to the bottom, click the small lock open permissions, need to enter the administrator password, and then all the permissions to read and write, the first step to complete, next, right-click Sdksettings. Plist folder, and the same action above, open read and Write permissions, and then double-click Open sdksettings.plist file,
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Add 7.0 and 7.1 below this and arrange in order from small to large. Then restart the computer can, at the end of the time do not forget to change the permissions have been changed back to prevent careless move should not move.
See Xcode inside:
Can already see 7.0 and 7.1, if you need to support the lower version, with the same method above, only need to add the corresponding configuration file.
Thanks for sharing
Reprint Link http://blog.csdn.net/codingfire/article/details/52638265
Xcode8 compatible IOS7-B