Getting an iOS application's “~/Library” path reliably in Swift

Question

I want to get the directory where I can create files and write logs to files in my swift app for iOS devices. I read here, https://stackoverflow.com/a/3763050/919280, that using Objective-C, there is a solution. I tried writing it in swift like this:

var appDir = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, true)

But, NSLibraryDirectory and NSUserDomainMask do not seem to be present in Swift. What is the way to do this is Swift?

Answer 1

Solution:

var appDir = NSSearchPathForDirectoriesInDomains(.LibraryDirectory, .UserDomainMask, true)

Explanation:
You can click on method and see it's declaration.

func NSSearchPathForDirectoriesInDomains(directory: NSSearchPathDirectory, domainMask: NSSearchPathDomainMask, expandTilde: Bool) -> [AnyObject]!

As you can see it takes NSSearchPathDirectory enum
and NSSearchPathDomainMask struct.

In swift, when you use enums, you don't need to specify enum type, you can use case values itself .LibraryDirectory instead of NSSearchPathDirectory.LibraryDirectory

Swift 5

Enums are lower-case now:

.libraryDirectory

.userDomainMask