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private func currentPageIndex() -> Int {
        let width = self.frame.width
        var currentPageIndex = Int((contentSectionScrollView.contentOffset.x + (0.5 * width)) / width)
        if (currentPageIndex < 0) {
            currentPageIndex = 0
        } else if (currentPageIndex >= self.numberOfPages) {
            currentPageIndex = self.numberOfPages - 1
        }
        return currentPageIndex
    }

private func currentPageIndex() -> Int {
        let width = self.frame.width


        var currentPageIndex = 0
        if width != 0 {
           currentPageIndex =   Int(( contentSectionScrollView.contentOffset.x + (0.5 * width)) / width)
        } 


        if (currentPageIndex < 0) {
            currentPageIndex = 0
        } else if (currentPageIndex >= self.numberOfPages) {
            currentPageIndex = self.numberOfPages - 1
        }
        return currentPageIndex
    }

//UserService.swift
import UIKit
import Alamofire



extension MockData {
    
          static func index(completion: @escaping ([MockData]) -> Void) {
        
            Alamofire.request("https://www.dropbox.com/s/fem028u5ok95270/Clases.json?dl=1") .responseJSON { (response) in
            print(response)
            var users = [MockData]()
            if let objects = response.result.value {
                let json = objects as! NSDictionary
                let list = json["Horario"] as? [[String: AnyObject]]
                
            for object in list! {
                users.append(MockData(dictionary: object))
            }
            }
            completion(users)
            
        }
    
    }
}

//MockData.swift
import UIKit

class MockData: NSObject {

      var id : String?
      var dia : DiasClases?
      var materia : String?
      var horario : String?
      var seccion : String?
      var profesor : String?
    //var aula : String?
    //var obs : String?
      var HorarioArray = [MockData]()


init(dictionary: [String: AnyObject]){
    
    self.id = dictionary["id"] as? String
    let d = dictionary["dia"] as? String
    switch d {
    case "Lunes"?:
        self.dia = .Lunes
    case "Martes"?:
        self.dia = .Martes
    case "Miercoles"?:
        self.dia = .Miercoles
    case "Jueves"?:
        self.dia = .Jueves
    case "Viernes"?:
        self.dia = .Viernes
    case "Sabado"?:
        self.dia = .Sabado
    default:
        print("ERROR")
        
    }
    self.materia = dictionary["materia"] as? String
    self.horario = dictionary["horario"] as? String
    self.seccion = dictionary["seccion"] as? String
    self.profesor = dictionary["profesor"] as? String
    //self.aula = dictionary["aula"] as? String
    //self.obs = dictionary["obs"] as? String
    
 }


}


enum DiasClases {
    case Lunes
    case Martes
    case Miercoles
    case Jueves
    case Viernes
    case Sabado

  static func AllValues() -> [DiasClases] {
    return [Lunes, Martes, Miercoles, Jueves, Viernes, Sabado]
  }
}

import UIKit

class NewsViewController: UIViewController, ACTabScrollViewDelegate, ACTabScrollViewDataSource {

    @IBOutlet weak var tabScrollView: ACTabScrollView!

    var contentViews: [UIView] = []
    var friends: [MockData] = []

  override func viewDidLoad() {
    super.viewDidLoad()
    print("Inicio de viewDidLoad en NewsViewController")
    // set ACTabScrollView, all the following properties are optional
       tabScrollView.defaultPage = 0
       tabScrollView.arrowIndicator = true
       tabScrollView.delegate = self
       tabScrollView.dataSource = self
    
    // crear vistas de contenido de "storyboard"
    let storyboard = UIStoryboard(name: "Main", bundle: Bundle.main)
    for category in DiasClases.AllValues() {
        let vc = storyboard.instantiateViewController(withIdentifier: "ContentViewController") as! ContentViewController
        vc.category = category
        
        addChildViewController(vc) // no hay que olvidar, que es muy importante
        print("regreso a New")
        contentViews.append(vc.view)
        print("Termino la funcion viewDidload")
        
     }
    
    // aspecto de la barra de navegación conjunto
    if let navigationBar = self.navigationController?.navigationBar {
        print("Dentro del if de conf de barra de navegacion")
        navigationBar.isTranslucent = false
        navigationBar.tintColor = UIColor.white
        navigationBar.barTintColor = UIColor(red: 255.0 / 255, green: 255.0 / 255, blue: 255.0 / 255, alpha: 1)
        navigationBar.titleTextAttributes = NSDictionary(object: UIColor.red, forKey: NSForegroundColorAttributeName as NSCopying) as? [String : AnyObject]
        navigationBar.setBackgroundImage(UIImage(), for: UIBarMetrics.default)
        navigationBar.shadowImage = UIImage()
    }
    UIApplication.shared.statusBarStyle = UIStatusBarStyle.lightContent
}

// MARK: ACTabScrollViewDelegate
func tabScrollView(_ tabScrollView: ACTabScrollView, didChangePageTo index: Int) {
    print(index)
    print("cambio de pagina")
}

func tabScrollView(_ tabScrollView: ACTabScrollView, didScrollPageTo index: Int) {
    print("cambio de pagina con scroll")
}

// MARK: ACTabScrollViewDataSource
func numberOfPagesInTabScrollView(_ tabScrollView: ACTabScrollView) -> Int {
    print("numeros de paginas")
    return DiasClases.AllValues().count
}

func tabScrollView(_ tabScrollView: ACTabScrollView, tabViewForPageAtIndex index: Int) -> UIView {
    // crear una etiqueta
    print("Creando una Etiqueta")
    let label = UILabel()
    label.text = String(describing: DiasClases.AllValues()[index]).uppercased()
    if #available(iOS 8.2, *) {
        label.font = UIFont.systemFont(ofSize: 16, weight: UIFontWeightThin)
    } else {
        label.font = UIFont.systemFont(ofSize: 16)
    }
    label.textColor = UIColor(red: 255.0 / 255, green: 255.0 / 255, blue: 255.0 / 255, alpha: 1)
    label.textAlignment = .center
    
    // if the size of your tab is not fixed, you can adjust the size by the following way.
    label.sizeToFit() // resize the label to the size of content
    label.frame.size = CGSize(width: label.frame.size.width + 28, height: label.frame.size.height + 36) // add some paddings
    print("Etiqueta Creada")
    return label
}

func tabScrollView(_ tabScrollView: ACTabScrollView, contentViewForPageAtIndex index: Int) -> UIView {
    print("Dentro de la funcion tabScrollView de NewViewController")
    return contentViews[index]
  }
}

import UIKit

class ContentViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {

  @IBOutlet weak var tableView: UITableView!

  var category: DiasClases? {
      didSet {
         print("Dentro de category")
         for news in friends {

             if (news.dia == category ) {
                friends.append(news)
                print(friends)
             }
          }
       }
   }
  var friends: [MockData] = []
  override func viewDidLoad() {
    super.viewDidLoad()
    let refreshControl = UIRefreshControl()
    refreshControl.addTarget(self, action:#selector(refresh),for: .valueChanged)
    print("Dentro de viewDidLoad en ContentViewController")
    tableView.rowHeight = UITableViewAutomaticDimension
    tableView.estimatedRowHeight = 44
    tableView.delegate = self
    tableView.dataSource = self

    MockData.index { users in
        self.friends = users
        self.tableView.reloadData()
        
    }
    
    
    
    print("Fin de viewDidLoad en ContentViewController")
 }

func numberOfSections(in tableView: UITableView) -> Int {
    print("Numero de Secciones de la Tabla")
    return 1
}

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    print("Numero de filas")
    return friends.count
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    
    let news = friends[(indexPath as NSIndexPath).row]
    
    // set the cell
    let cell = tableView.dequeueReusableCell(withIdentifier: "Cell") as! ContentTableViewCell
    //cell.thumbnailImageView.image = UIImage(named: "thumbnail-\(news.id)")
    //cell.thumbnailImageView.layer.cornerRadius = 4
    cell.titleLabel.text = news.materia
    cell.categoryLabel.text = String(describing: news.horario!)
    cell.categoryView.layer.backgroundColor = UIColor.white.cgColor
    cell.categoryView.layer.cornerRadius = 4
    cell.categoryView.layer.borderWidth = 1
    cell.categoryView.layer.borderColor = UIColor(red: 238.0 / 255, green: 238.0 / 255, blue: 238.0 / 255, alpha: 1.0).cgColor
    
    return cell
}

func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
    return 0.1
}

func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
 
    let view = UIView()
    view.backgroundColor = UIColor(red: 0.0 / 255, green: 0.0 / 255, blue: 0.0 / 255, alpha: 1.0)
    
    let label = UILabel()
    label.text = " "
    label.textColor = UIColor.white
    if #available(iOS 8.2, *) {
        label.font = UIFont.systemFont(ofSize: 17, weight: UIFontWeightThin)
    } else {
        label.font = UIFont.systemFont(ofSize: 17)
    }
    label.sizeToFit()
    label.frame.origin = CGPoint(x: 18, y: 13)
    
    view.addSubview(label)
    
    return view
}

 func refresh() {
    

    

 }

}

class ContentTableViewCell: UITableViewCell {

    @IBOutlet weak var thumbnailImageView: UIImageView!
    @IBOutlet weak var titleLabel: UILabel!
    @IBOutlet weak var categoryView: UIView!
    @IBOutlet weak var categoryLabel: UILabel!

   override func awakeFromNib() {
    self.selectionStyle = .none
   }

}