尝试在Xcode 7 Beta 4中获取系统版本时出现编译错误

Question

I am getting the following error when i try to get the system version

 //let Device = UIDevice.currentDevice() //this line also cause a compilation error
 let iosVersion = NSString(string: Device.systemVersion).doubleValue

Command /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swiftc failed with exit code 1

Answer 1

try this

let theDevice = UIDevice.currentDevice().systemVersion

this will give you 9.0.1 for example for ios 9.01