I have parsing the JSON values in UITableView using MVC pattern, For that, I have created a separate UITableView swift class, Model class, and UIViewController class as well.
I can able to parse the JSON values into the table view. But the problem is I can't able to pass the selected tableView cell values to my controller using the delegate method
Here my code is
UIVIewController :
class ViewController: UIViewController,contactSelectionDelegate {
var contactArray = [Address]()
#IBOutlet weak var userTable: UserTable!
let user = UserTable()
override func viewDidLoad() {
super.viewDidLoad()
user.userdelegate? = self
if Connectivity.isConnectedToInternet() {
print("Yes! Network connection is available")
APIManager.sharedInstance.fetchUserDetails(urlString: FETCH_USER_DETAIL_URL, userCount: ["offset":1]) { connectionResult in
switch connectionResult {
case .success(let data):
do {
self.contactArray = try JSONDecoder().decode([Address].self, from: data)
print(self.contactArray.count)
print(self.contactArray[0].Name)
DispatchQueue.main.async {
print(self.contactArray)
self.userTable.dataSourceArray=self.contactArray
self.userTable.reloadData()
}
}
catch let errorValue {
print(errorValue)
}
case .failure(let error):
print(error)
}
}
}
else{
print("No network connection")
}
}
func selectedUserContact(name: String, email: String, phone: String) {
print("Delegate Called")
let userdetailVC = storyboard?.instantiateViewController(withIdentifier: "UserContactDetailPage") as! UserContactDetailPage
userdetailVC.name = name
userdetailVC.email = email
userdetailVC.phone = phone
self.navigationController?.pushViewController(userdetailVC, animated: true)
} }
UITableView :
protocol contactSelectionDelegate: class{
func selectedUserContact(name: String ,email: String ,phone: String)
}
class UserTable: UITableView ,UITableViewDelegate ,UITableViewDataSource {
var dataSourceArray = [Address]()
weak var userdelegate: contactSelectionDelegate?
override init(frame: CGRect, style: UITableViewStyle) {
super.init(frame: frame, style: style)
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
}
override func awakeFromNib() {
super.awakeFromNib()
self.delegate=self
self.dataSource=self
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1;
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.dataSourceArray.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell:UserCell = tableView.dequeueReusableCell(withIdentifier: "UserCell", for: indexPath) as! UserCell
if self.dataSourceArray.count>0 {
let myUser = self.dataSourceArray[indexPath.row]
cell.nameLbl.text = myUser.Name
cell.emailLbl.text = myUser.Email
cell.phoneLbl.text = myUser.Phone
}
return cell
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 200
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let myUser = self.dataSourceArray[indexPath.row]
print(myUser.Name)
print(myUser.Email)
print(myUser.Phone)
userdelegate?.selectedUserContact(name: myUser.Name, email: myUser.Email, phone: myUser.Phone)
}}
Here when I click table on the tableView cell didSelectRowAtIndexPath method called but selectedUserContact not getting called.
You've misunderstood the purpose of delegating here. The idea is that your table view is only responsible for drawing a table, it shouldn't be responsible for maintaining any of the data that it's displaying. This allows you to cleanly design your code using the Model-View-Controller (MVC) paradigm. Delegation allows your controllers to pass model information to the views without breaking MVC.
In your example: Address is the model, the table view is the view, and your view controller is the controller. So you want your controller to conform to the table view's delegate/data source protocols so that it can feed the data to it correctly.
class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
var contactArray = [Address]()
#IBOutlet weak var userTable: UserTable!
override func viewDidLoad() {
super.viewDidLoad()
if Connectivity.isConnectedToInternet() {
print("Yes! Network connection is available")
APIManager.sharedInstance.fetchUserDetails(urlString: FETCH_USER_DETAIL_URL, userCount: ["offset":1]) { connectionResult in
switch connectionResult {
case .success(let data):
do {
self.contactArray = try JSONDecoder().decode([Address].self, from: data)
print(self.contactArray.count)
print(self.contactArray[0].Name)
DispatchQueue.main.async {
print(self.contactArray)
self.userTable.reloadData()
}
}
catch let errorValue {
print(errorValue)
}
case .failure(let error):
print(error)
}
}
}
else{
print("No network connection")
}
}
// MARK: - UITableViewDataSource
func numberOfSections(in tableView: UITableView) -> Int {
return 1;
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.contactArray.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell: UserCell = tableView.dequeueReusableCell(withIdentifier: "UserCell", for: indexPath) as! UserCell
let myUser = self.contactArray[indexPath.row]
cell.nameLbl.text = myUser.Name
cell.emailLbl.text = myUser.Email
cell.phoneLbl.text = myUser.Phone
return cell
}
// MARK: - UITableViewDelegate
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 200
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let myUser = self.contactArray[indexPath.row]
print(myUser.Name)
print(myUser.Email)
print(myUser.Phone)
selectedUserContact(name: myUser.Name, email: myUser.Email, phone: myUser.Phone)
}
// MARK: -
func selectedUserContact(name: String, email: String, phone: String) {
print("Delegate Called")
let userdetailVC = storyboard?.instantiateViewController(withIdentifier: "UserContactDetailPage") as! UserContactDetailPage
userdetailVC.name = name
userdetailVC.email = email
userdetailVC.phone = phone
self.navigationController?.pushViewController(userdetailVC, animated: true)
}
}
EDIT: I just want to add that you need to make sure in your storyboard that you set ViewController as the delegate and dataSource of the table view. Then you can remove all the code that you've written in the UserTable class. If anything you don't need it at all and your table view can be a simple UITableView. I almost never create subclasses of it, since you can normally do everything through the delegation and UITableViewCell subclasses.
Looks like you're instantiating the table view from a storyboard, so you're not setting the delegate on the correct instance of UserTable (and the delegate method is never called because the delegate is nil).
In the view controller change
user.userdelegate? = self
to
userTable.userdelegate? = self
According to this line, Your have a table view in the storyboard and taken outlet in viewcontroller.
#IBOutlet weak var userTable: UserTable!
So you don't need to do this like that:
let user = UserTable()
You have to give delegate like this:
userTable.userdelegate? = self
For mine it is working fine with the below scenario. Kindly check with that one.
UserTable
#objc protocol contactSelectionDelegate: class {
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
}
weak var userdelegate: contactSelectionDelegate?
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
delegate?.tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
}
ViewController
class ViewController: UIViewController {
}
extension ViewController: contactSelectionDelegate {
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
// YOU CAN GET THE ALL THE STUFFS WHICH IS USER SELECTED IN THE TABLE VIEW
}
}
Related
My application fetches data from a mock API.
Using a custom cell, I display the names of authors on my landing page viewController.
When I click on a cell, it takes that author's book information to display on a 2nd TableViewController.
But even though the implementation is the same as for the landing page. My app freezes until I get a EXC_BAD_ACCESS error
It seems like it's stuck in an infinite loop, but without a proper error, it's hard to know why.
Infinite Loop?
I can get this to work without using a custom cell, but then I cannot display all the information I want (only book title or release date), so the data is there.
import UIKit
class BooksTableViewCell: UITableViewCell {
#IBOutlet weak var name: UILabel!
#IBOutlet weak var pages: UILabel!
#IBOutlet weak var release: UILabel!
// #IBOutlet var coverImage: UIImageView!
static let cellIdentifier = "BooksTableViewCell"
//
override func awakeFromNib() {
super.awakeFromNib()
}
static func nib() -> UINib {
return UINib(nibName: "BooksTableViewCell", bundle: nil)
}
//MARK: configure
public func configure(with viewModel: BooksCellViewModel) {
name.text = viewModel.name
pages.text = String(viewModel.pages)
release.text = viewModel.release
// coverImage.image = viewModel.image
}
}
import UIKit
class BooksTableViewController: UITableViewController {
var books: [Book] = []
var authorName: String = ""
override func viewDidLoad() {
super.viewDidLoad()
tableView.register(BooksTableViewCell.nib(), forCellReuseIdentifier: BooksTableViewCell.cellIdentifier)
tableView.delegate = self
tableView.dataSource = self
}
override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return authorName
}
// MARK: - Table view data source
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return books.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
print("Hello1")
let cell = tableView.dequeueReusableCell(withIdentifier: BooksTableViewCell.cellIdentifier, for: indexPath) as! BooksTableViewCell
print("Hello2")
let model = books[indexPath.row]
cell.configure(with: BooksCellViewModel(name: model.title, pages: model.pages, release: model.releaseDate))
return cell
}
}
The landing page controller and cell is similar but works with no problems
import UIKit
class LandingTableViewController: UITableViewController {
let parser = DataAPI()
var authors = [Author]()
var books = [Book]()
var authorName = ""
override func viewDidLoad() {
super.viewDidLoad()
tableView.register(AuthorTableViewCell.nib(), forCellReuseIdentifier: AuthorTableViewCell.cellIdentifier)
tableView.delegate = self
tableView.dataSource = self
parser.getData {
data in
self.authors = data
//Reload UI on Main thread:
DispatchQueue.main.async {
self.tableView.reloadData()
}
}
}
override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return "List of Authors"
}
// MARK: - Table view data source
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
return authors.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: AuthorTableViewCell.cellIdentifier, for: indexPath) as! AuthorTableViewCell
let model = authors[indexPath.row]
cell.configure(with: AuthorCellViewModel(name: model.authorName))
return cell
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
tableView.deselectRow(at: indexPath, animated: true)
books = authors[indexPath.row].books
authorName = authors[indexPath.row].authorName
performSegue(withIdentifier: "Show Books", sender: nil)
}
// MARK: - Navigation
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
// Get the new view controller using segue.destination.
// Pass the selected object to the new view controller.
if (segue.identifier == "Show Books") {
let showBooksViewController: BooksTableViewController = segue.destination as! BooksTableViewController
showBooksViewController.books = books
showBooksViewController.authorName = authorName
}
}
}
I was able to fix the issue by correctly naming my variables. I needed to be using releaseDate not release as per my model object.
I know how to preserve the action we have done on UITableView, after scrolling back and forth.
Now Iam doing a simple UITableView on MVVM
which has a Follow button . like this.
Follow button changes to Unfollow after click and resets after scrolling.
Where and How to add the code to prevent this?
Here is the tableview Code
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return Vm.personFollowingTableViewViewModel.count
}
var selectedIndexArray:[Int] = []
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
guard let cell = tableView.dequeueReusableCell(withIdentifier: FollowList_MVVM.PersonFollowingTableViewCell.identifier , for: indexPath) as? PersonFollowingTableViewCell else{
return UITableViewCell()
}
cell.configure(with: Vm.personFollowingTableViewViewModel[indexPath.row])
cell.delegate = self
return cell
}
and configure(with: ) function
#objc public func didTapButton(){
let defaultPerson = Person(name: "default", username: "default", currentFollowing: true, image: nil)
let currentFollowing = !(person?.currentFollowing ?? false)
person?.currentFollowing = currentFollowing
delegate?.PersonFollowingTableViewCell(self, didTapWith: person ?? defaultPerson )
configure(with: person ?? defaultPerson)
}
func configure(with person1 : Person){
self.person = person1
nameLabel.text = person1.name
usernameLabel.text = person1.username
userImageview.image = person1.image
if person1.currentFollowing{
//Code to change button UI
}
custom delegate of type Person is used
I guess your main issue is with Button title getting changed on scroll, so i am posting a solution for that.
Note-: Below code doesn’t follow MVVM.
Controller-:
import UIKit
class TestController: UIViewController {
#IBOutlet weak var testTableView: UITableView!
var model:[Model] = []
override func viewDidLoad() {
for i in 0..<70{
let modelObject = Model(name: "A\(i)", "Follow")
model.append(modelObject)
}
}
}
extension TestController:UITableViewDelegate,UITableViewDataSource{
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return model.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell") as! TestTableCell
cell.dataModel = model[indexPath.row]
cell.delegate = self
return cell
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 100
}
}
extension TestController:Actions{
func followButton(cell: UITableViewCell) {
let indexPath = testTableView.indexPath(for: cell)
model[indexPath!.row].buttonTitle = "Unfollow"
testTableView.reloadRows(at: [indexPath!], with: .automatic)
}
}
class Model{
var name: String?
var buttonTitle: String
init(name: String?,_ buttonTitle:String) {
self.name = name
self.buttonTitle = buttonTitle
}
}
Cell-:
import UIKit
protocol Actions:AnyObject{
func followButton(cell:UITableViewCell)
}
class TestTableCell: UITableViewCell {
#IBOutlet weak var followButtonLabel: UIButton!
#IBOutlet weak var eventLabel: UILabel!
var dataModel:Model?{
didSet{
guard let model = dataModel else{
return
}
followButtonLabel.setTitle(model.buttonTitle, for: .normal)
eventLabel.text = model.name
}
}
weak var delegate:Actions?
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
#IBAction func followAction(_ sender: Any) {
delegate?.followButton(cell:self)
}
}
To convert this into MVVM approach, there are few things you need to change and move out.
The loop I have in viewDidLoad shouldn’t be there. That will be some API call, and should be handled by viewModel, and viewModel can delegate that to other repository to handle or handle itself. Upon receiving response viewModel update its state and communicate with View (in our case tableView) to re-render itself.
Code in extension where I am updating model object shouldn’t be in controller (model[indexPath!.row].buttonTitle = "Unfollow"), that has to be done by viewModel, and once the viewModel state changes it should communicate with view to re-render.
The interaction responder (Button action) in Cell class, should delegate action to viewModel and not controller.
Model class should be in its own separate file.
In short viewModel handles the State of your View and it should be the one watching your model for updates, and upon change it should ask View to re-render.
There are more things you could do to follow strict MVVM approach and make your code more loosely coupled and testable. Above points might not be 100% correct I have just shared some basic ideas i have. You can check article online for further follow up.
The above answer works . But I have gone through what suggested by #Joakim Danielson to find what exactly happens when you are updating the View and Why it is not updating on ViewModel
So I made an update to delegate function
ViewController delegate function
func PersonFollowingTableViewCell1( _ cell: PersonFollowingTableViewCell, array : Person, tag : Int)
Here, I called the array in the Viewmodel and assigned the values of array in func argument to it.
like ViewModel().Vmarray[tag].currentFollow = array[tag].currentFollow
I have created a custom cell for my collectionview that i have set in a tableview for my app. I need to know to to set the text label to appear as the items in my array that is listed in my JSON File that is local.
View Controller:
class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
var workoutData = [Models]()
#IBOutlet weak var tableview: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
parseJSON()
tableview.register(CollectionTableViewCell.nib(), forCellReuseIdentifier: CollectionTableViewCell.identifier)
print(workoutData)
}
func numberOfSections(in tableView: UITableView) -> Int {
return workoutData.count
}
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return workoutData[section].title
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return workoutData[section].workouts.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: CollectionTableViewCell.identifier, for: indexPath) as! CollectionTableViewCell
cell.configure(with: workoutData)
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
tableview.deselectRow(at: indexPath, animated: true)
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 250.0
}
func parseJSON() {
let url = Bundle.main.url(forResource: "data", withExtension: "json")!
do{
let data = try Data(contentsOf: url)
workoutData = try JSONDecoder().decode([Models].self, from: data)
} catch {
print(error)
}
}
}
My Custom Cell File:
import UIKit
class MyCollectionViewCell: UICollectionViewCell {
var workoutData = [Models]()
#IBOutlet weak var myLabel: UILabel!
static let identifier = "MyCollectionViewCell"
static func nib() -> UINib {
return UINib(nibName: "MyCollectionViewCell", bundle: nil)
}
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
public func configure(with model: Models) {
self.myLabel.text = //what to put here.
print(model.title)
}
}
My JSON File:
[
{
"title": "Chest",
"workouts": [
"Bench",
"Pushup",
"Incline Press",
"Decline Press",
]
},
{
"title": "Back",
"workouts": [
"Barbell Row",
"Lat Pulldown",
"Deadlift",
"Back Extension",
]
},
{
"title": "Arms",
"workouts": [
"Barbell Curl",
"Dumbbell Curl",
"Tricep Pressdown",
"Skull Crusher",
]
}
]
I want my text label to show the items in my workouts array. when i set it i get the error "cannot assign value of type '[String]' to type 'String'". I would appreciate any help or directions. Thanks
EDIT:
I am looking to build my layout similar to the horizontal scroll of the the app store
workouts is an array of String. So firstly you need to get the String from array by index.
You can use this to show the first value on the label
self.myLabel.text = models.workouts[0]
Or If you want to show all the workouts values on the array then you can use
self.myLabel.text = models.workouts.joined(separator: ", ")
I want to pass the data A view to B view, it can build and show data in A view, but after I selected the cell, it crashed. And it shows the problem on the code.
vcTwo.selectedzones.zones = [selectedCity]
fatal error: unexpectedly found nil while unwrapping an Optional value (lldb)
my code
The struct mode:
struct Location {
var city: String!
var zones = [String]()
}
var city = ["KHT", "TPAP", "TNNY"]
let kh = Location.init(city: "KHT", zones: ["sami", "zami", "zomi", "komi", "shini"])
let tpa = Location.init(city: "TPAP", zones: ["mid", "east", "anci", "zochi"])
let tnn = Location.init(city: "TNNY", zones: ["TN1","TN2", "TN3", "TN4", "TN5"])
Here is the A viewController code:
import UIKit
class FirstViewTableViewController: UITableViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
// MARK: - Table view data source
override func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return city.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! FirstCell
cell.firstLabel.text = city[indexPath.row]
return cell
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let selectedCity = city[indexPath.row]
let vcTwo = self.storyboard?.instantiateViewController(withIdentifier: "secondVC") as! secondViewController
vcTwo.selectedzones.zones = [selectedCity]
self.navigationController?.pushViewController(vcTwo, animated: true)
}
}
The B viewController:
import UIKit
class secondViewController: UITableViewController {
var selectedzones: Location!
override func viewDidLoad() {
super.viewDidLoad()
}
override func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return selectedzones.zones.count
}
Is there any part wrong in the func didSelectRowAt indexPath?
here is the problem
vcTwo.selectedzones.zones = [selectedCity]
you need to init the selectedZone in first Controller
let kh = Location.init(city: "KHT", zones: ["sami", "zami", "zomi", "komi", "shini"])
vcTwo.selectedzones = kh
Try this
class secondViewController: UITableViewController {
var selectedzones = Location()
}
you are try to accesss zones but you have not allocate Location so it will crash.
Hope it will help you
Instead of Optional ! use Optional ?
class secondViewController: UITableViewController {
var selectedzones: Location?
NOT
class secondViewController: UITableViewController {
var selectedzones: Location!
I can't figure out why my TableView is not showing. Its probably something stupid but all of my MenuItemStruct's are complete and not null and my table view seems set up correctly to me. There are no errors, but my cellForRowAt method is not getting called. Please help?
class MenuViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
var menuNavigationDelegate: MenuNavigationDelegate?, menuManagerDelegate: MenuManagerDelegate?
var conferenceId = "conferenceId-1"
var isDataLoading = false
#IBOutlet
var menuTableView: UITableView?
var menuItems = Array<MenuItemStruct>()
#IBAction
func closeMenuTapped() {
self.menuManagerDelegate?.closeMenu()
}
override func viewDidLoad() {
self.menuTableView?.register(UINib(nibName: "MenuTableViewCell", bundle: nil), forCellReuseIdentifier: "menuCell")
self.isDataLoading = true
MenuDataManager.getMenuInformation(conferenceId: self.conferenceId) {
menuItems, response, error in
self.menuItems = menuItems!
self.isDataLoading = false
DispatchQueue.main.async {
self.menuTableView?.reloadData()
}
}
self.menuTableView?.reloadData()
}
public func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell:MenuTableViewCell = menuTableView!.dequeueReusableCell(withIdentifier: "menuCell", for: indexPath) as! MenuTableViewCell
if (!self.isDataLoading) {
cell.setUpCellWithData(menuItem: menuItems[indexPath.row])
}
return cell
}
public func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if(!self.isDataLoading) {
return self.menuItems.count
}
return 0;
}
}
You need to set the delegate and datasource of your table view. You have included the UITableViewDataSource and UITableViewDelegate protocols, but have not assigned a delegate and datasource for your tableview in the code.
Try something like this in your viewDidLoad:
self.menuTableView.delegate = self
self.menuTableView.dataSource = self