AppDelegate.swift

/*
 * Example implementation
 */
 
func application(application: UIApplication, openURL url: NSURL, sourceApplication: String?, annotation: AnyObject) -> Bool {
    println("Launched with URL: \(url.absoluteString)")
    
    let userDict = self.urlPathToDictionary(url.absoluteString)
    
    //Do something with the information in userDict  

    return true
}

DictionaryFromUrlPath.swift

/*
 func urlPathToDictionary(path:String) -> [String:String]?
 Takes a url in the form of: your_prefix://this_item/value1/that_item/value2/some_other_item/value3
 And turns it into a dictionary in the form of:
 {
   this_item: @"value1",
   that_item: @"value2",
   some_other_item: @"value3"
 }
 
 Handles everything properly if there is a trailing slash or not.
 Returns `nil` if there aren't the proper combinations of keys and pairs (must be an even number)

 NOTE: This example assumes you're using ARC. If not, you'll need to add your own autorelease statements.
 */

func urlPathToDictionary(path:String) -> [String:String]? {
    //Get the string everything after the :// of the URL.
    let stringNoPrefix = path.componentsSeparatedByString("://").last
    
    //Get all the parts of the url
    if var parts = stringNoPrefix?.componentsSeparatedByString("/") {
        //Make sure the last object isn't empty
        if parts.last == "" {
            parts.removeLast()
        }
            
        if parts.count % 2 != 0 { //Make sure that the array has an even number
            return nil
        }
            
        var dict = [String:String]()
        var key:String = ""
            
        //Add all our parts to the dictionary
        for (index, part) in parts.enumerate() {
            if index % 2 != 0 {
                key = part
            } else {
                dict[key] = part
            }
        }
            
        return dict
    }
        
    return nil
}