Json : Save Images into CoreData in Swift - ios

Question

I’m now stuck little bit. First, my code is as follows,
import UIKit
import CoreData
class ViewController: UIViewController {
var eTitles : [String] = []
var jTitles : [String] = []
var pCategories : [String] = []
var imgPaths : [String] = []
override func viewDidLoad() {
super.viewDidLoad()
let url = NSURL(string: "http://localhost:8888/post.php")
let allData = NSData(contentsOfURL: url!)
let allJsonData : AnyObject! = NSJSONSerialization.JSONObjectWithData(allData!, options: NSJSONReadingOptions(0), error: nil)
if let json = allJsonData as? Array<AnyObject>{
//println(json)
for index in 0...json.count-1{
let post : AnyObject? = json[index]
//println(post)
let collection = post! as Dictionary<String, AnyObject>
//println(collection)
//println(collection["Eng_Title"])
var eTitle : AnyObject? = collection["Eng_Title"]
var jTitle : AnyObject? = collection["Jam_Title"]
var pCategory : AnyObject? = collection["Category"]
var imgPath : AnyObject? = collection["Category_Img"]
eTitles.append(eTitle as String)
jTitles.append(jTitle as String)
pCategories.append(pCategory as String)
imgPaths.append(imgPath as String)
}
}
println(eTitles)
println(jTitles)
println(pCategories)
println(imgPaths)
for var i = 0; i < pCategories.count; i++
{
let appDelegate = UIApplication.sharedApplication().delegate as AppDelegate
let managedContext = appDelegate.managedObjectContext!
let entity = NSEntityDescription.entityForName("Category", inManagedObjectContext: managedContext)!
let category = Category(entity: entity, insertIntoManagedObjectContext:managedContext)
category.title = pCategories[i]
category.path = fetchImg(imgPaths[i])
appDelegate.saveContext()
let en = NSEntityDescription.entityForName("Post", inManagedObjectContext: managedContext)!
let post = Post(entity: en, insertIntoManagedObjectContext:managedContext)
post.jtitle = jTitles[i]
post.etitle = eTitles[i]
post.category = category
appDelegate.saveContext()
}
}
func fetchImg(path : String) -> String{
var urlWebView = NSURL(string: path)!
println(urlWebView)
var requestWebView = NSURLRequest(URL: urlWebView)
var saveP : String = ""
NSURLConnection.sendAsynchronousRequest(requestWebView, queue: NSOperationQueue.mainQueue(), completionHandler: {
response, data, error in
if error != nil {
println("There was an error")
}
else {
// let musicFile = (data: data)
var documentsDirectory:String?
var paths:[AnyObject] = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true)
if paths.count > 0 {
documentsDirectory = paths[0] as? String
var savePath = documentsDirectory! + "/" + NSUUID().UUIDString + ".jpg"
println(savePath)
saveP = savePath
NSFileManager.defaultManager().createFileAtPath(savePath, contents: data, attributes: nil)
}
}
})
return saveP
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
Everytime I run this app, it stops at this line :
NSURLConnection.sendAsynchronousRequest(requestWebView, queue: NSOperationQueue.mainQueue(), completionHandler: {
(What I’m trying to do here is to parse Json data and put it into array, and then save it into CoreData. The problem is fetchImg() function.
I’m trying to pass paths, which come from Json data, to this function, and the function fetch real images from web, create a path and save the data onto device, and return the path to which images actually are saved.)
Any advice?
Sorry for my poor Eng explanation!!!
Thanks!