SwiftData Error NSFileManager

Question

I'm updating SwiftData from Swift 1.2 to Swift 2 and after some changes and corrections I'm still having an error that I can't understand why it's happening.

The code goes as the following:

    public static func saveUIImage(image: UIImage) -> String? {

    let docsPath = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true)[0] as String
    let imageDirPath = docsPath.stringByAppendingPathComponent("SwiftDataImages")

    if !NSFileManager.defaultManager().fileExistsAtPath(imageDirPath) {

        do {
            try NSFileManager.defaultManager().createDirectoryAtPath(imageDirPath, withIntermediateDirectories: false, attributes: [:])
        } catch {
            print("Error creating SwiftData image folder")
            return nil
        }

    }

    let imageID = NSUUID().UUIDString
    let imagePath = (imageDirPath as NSString).stringByAppendingPathComponent(imageID)
    let imageAsData = UIImagePNGRepresentation(image)
    if !imageAsData!.writeToFile(imagePath, atomically: true) {
        print("Error saving image")
        return nil
    }
    return imageID

}

On the 'do {' line Xcode is throwing the following error:

Cannot invoke 'createDirectoryAtPath' with an argument list of type '(String, withIntermediateDirectories: Bool, attributes: _, error: _)'

Any tips of why this is happening? It's driving me crazy.

Kind regards, and thanks in advance.

;)

Answer 1

In my Xcode 7.2 there is no:

let imageDirPath = docsPath.stringByAppendingPathComponent("SwiftDataImages")

So I tried this code and it compiles fine:

public func saveUIImage(image: UIImage) -> String? {

    let docsPath = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true)[0] as String
    let imageDirPath = NSURL(string: docsPath)?.URLByAppendingPathComponent("SwiftDataImages")

    if !NSFileManager.defaultManager().fileExistsAtPath(imageDirPath!.absoluteString) {

        do {
            try NSFileManager.defaultManager().createDirectoryAtPath(imageDirPath!.absoluteString, withIntermediateDirectories: false, attributes: [:])
        } catch {
            print("Error creating SwiftData image folder")
            return nil
        }

    }

    let imageID = NSUUID().UUIDString
    let imagePath = (imageDirPath!.absoluteString as NSString).stringByAppendingPathComponent(imageID)
    let imageAsData = UIImagePNGRepresentation(image)
    if !imageAsData!.writeToFile(imagePath, atomically: true) {
        print("Error saving image")
        return nil
    }
    return imageID
}