How to convert NSURL to String in Swift

问题

How do you convert an NSURL to a String in Swift?

The following:

var directoryURL: NSURL
var urlString: String = nsurlObject as String

Throws the error:

Cannot convert value of type 'NSURL' to type 'String' in coercion

回答1:

It turns out there are properties of NSURL you can access (see Swift Reference):

var directoryURL: NSURL
var urlString: String = directoryURL.absoluteString
// OR
var urlString: String = directoryURL.relativeString
// OR
var urlString: String = directoryURL.relativePath
// OR
var urlString: String = directoryURL.path
// etc.

回答2:

In Swift 3 & 4,

To convert URL to String, you can use:

String(contentsOf: URL)

and to convert String to URL:

URL(string: String)

来源：https://stackoverflow.com/questions/33510541/how-to-convert-nsurl-to-string-in-swift