ios8~xcode调试ios7

2018.03.13

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport
放入Xcode7下的内容

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk
修改修改SDKSettings.plist
DefaultProperties/DEPLOYMENT_TARGET_SUGGEST下增加item，7.0