Getting system uptime in iOS/Swift

Question

Is there a way to get system uptime in iOS (using Swift)? What I need is to measure time without having to worry about the user changing the time. In Android there\'s a

Answer 1

This is a solution in Swift 4.

 var boottime = timeval()
 var size = MemoryLayout.stride
 sysctlbyname("kern.boottime", &boottime, &size, nil, 0)