如何在Swift 4.1中使用NSURL：setResourceValues（）？

Question

All the examples of using setResourceValues() are like this:

var resourceValues = URLResourceValues()
resourceValues.isExcludedFromBackup = true
try? path?.setResourceValues(resourceValues)

However this doesn't compile with Swift 4.1, the error is

Cannot convert value of type 'URLResourceValues' to expected argument type '[URLResourceKey : Any]'

How do I convert a URLResourceValues to a [URLResourcesKey:Any] ?

Answer 1

You are trying to call a method of URL on an instance of NSURL .

NSURL defines:

func setResourceValues(_ keyedValues: [URLResourceKey : Any]) throws

while URL defines:

func setResourceValues(_ values: URLResourceValues) throws

Since you are using Swift, do not use NSURL . Update your code so path is of type URL instead of NSURL and your call to setResourceValues will work.