Swift 2.0 JSON-TableView

DataTableViewController.swift

//
//  DataTableViewController.swift
//  tableView
//
//  Created by Cuong Tran on 9/16/15.
//  Copyright © 2015 Cuong Tran. All rights reserved.
//

import UIKit

class DataTableViewController: UITableViewController {
    
    var dataArray: NSArray = []
    override func viewDidLoad() {
        super.viewDidLoad()
        
        
        loadDataFromServer()
        // Uncomment the following line to preserve selection between presentations
        // self.clearsSelectionOnViewWillAppear = false

        // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
//         self.navigationItem.rightBarButtonItem = self.editButtonItem()
    }
    
    func loadDataFromServer() {
        let url = NSURL(string: "http://www.reddit.com/.json")
        let session = NSURLSession.sharedSession()
        
        let task = session.dataTaskWithURL(url!, completionHandler: {
            (data, repsonse, error) -> Void in
            if (error != nil) {
                print(error)
            } else {
                do {
                    let jsonResult = try NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.MutableContainers)
                    
                    if let resultObject = jsonResult as? NSDictionary {
                        if let resultObjectData = resultObject["data"] as? NSDictionary {
                            if let resultObjectChildren = resultObjectData["children"] as? NSArray {
                                dispatch_async(dispatch_get_main_queue(), {
                                    self.dataArray = resultObjectChildren
                                    self.tableView.reloadData()
                                })
                            }
                        }
                    }
                } catch let error as NSError {
                    print(error)
                }
            }
        })
        
        task.resume()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    // MARK: - Table view data source

    override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
        // #warning Incomplete implementation, return the number of sections
        return 1
    }

    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        // #warning Incomplete implementation, return the number of rows
        return dataArray.count
    }

    
    override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath)
        let entry = dataArray[indexPath.row] as! NSDictionary
        let entryData = entry["data"] as! NSDictionary
        
        
        let picURL = entryData["thumbnail"] as! String
        let purl = NSURL(string: picURL)
        let picdata = NSData(contentsOfURL: purl!)
        if ((picdata) != nil) {
            cell.imageView?.image = UIImage(data: picdata!)
        }
        cell.textLabel?.text = entryData["title"] as? String

        return cell
    }

}