摘要： To get Xcode 4.2 on Snow Leopard to run code on a device running 5.1 you can do this:If you have another Mac running Lion + XCode 4.3.1 you can copy the files from:"/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/5.1 (9B176)"to the equivalent place on y 阅读全文