I'm trying to display JSON value using Struct into table view in Swift 3.0 .
I managed to display JSON value using struct into UIPickerView and it works fine. But somehow when I use the same way in table view it does not work.
Can someone help me to update my code below in order to make it work in UITableView ? Appreciate if someone can help. Thanks.
list.php output
[
{"id":"101", "name":"name1"},
{"id":"102", "name":"name2"}
]
ViewController.swift
import UIKit
class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource{
#IBOutlet var tableview: UITableView!
#IBOutlet var deptLbl: UILabel!
#IBOutlet var selectBtn: UIButton!
#IBOutlet var displayIDLbl: UILabel!
#IBOutlet var displayNameLbl: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
deptLbl.text = "ITD"
self.tableview.isHidden = true
getList()
}
var persons = [Person]()
struct Person {
var id: String
var name: String
init?(dict: [String:Any]) {
guard let id = dict["id"] as? String, let name = dict["name"] as? String else {
return nil
}
self.id = id
self.name = name
}
}
func getList() {
var request = URLRequest(url: URL(string: "http://localhost/list.php")!)
request.httpMethod = "POST"
let postString = "dept=\(deptLbl.text!)"
request.httpBody = postString.data(using: .utf8)
let task = URLSession.shared.dataTask(with: request) { (data, response, error) in
guard let data = data, error == nil else {
return
}
if let array = (try? JSONSerialization.jsonObject(with: data, options: [])) as? [[String:Any]] {
self.persons = array.flatMap(Person.init)
DispatchQueue.main.async {
self.tableview.reloadData()
}
}
}
task.resume()
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self .persons.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "listcell", for: indexPath)
let data = persons[indexPath.row]
cell.textLabel?.text = data.id
cell.textLabel?.text = data.name
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
self.displayIDLbl.text = self.persons[indexPath.row].id
self.displayNameLbl.text = self.persons[indexPath.row].name
self.tableview.isHidden = true
}
#IBAction func pressedBtn(_ sender: Any) {
self.tableview.isHidden = !self.tableview.isHidden
}
}
Related
Hello good afternoon to everyone.
I hope you are doing very well despite the situation we are going through.
I tell you my problem.
I am trying to save in an array, a series of data that is selected from a tableView through a JSON.
That is, the tableView shows some data available to select, the ones that are selected I want to save them in an array but when I select a data in the tableView my app crashes and shows me a breakpoint "Thread 1: signal SIGABRT"
And in the console I get this:
Could not cast value of type 'MallConcierge.DetallesIntereses' (0x10ca9be10) to 'NSString' (0x7fff86d8bbb0).
I hope you can help me, I attach the classes from where I download the data, the details and the class where I connect the tableView.
InteresesModelo.swift (in this class is where I download the data in JSON)
import UIKit
protocol InteresesModeloProtocol: class{
func interesesDownload (interest: NSArray)
}
class InteresesModelo: NSObject {
weak var delegate: InteresesModeloProtocol!
let urlPath = "http://localhost:8888/mallconcierge/API-movil/interests.php"
func interestDownload(){
let url: URL = URL(string: urlPath)!
let defaultSession = Foundation.URLSession(configuration: URLSessionConfiguration.ephemeral)
URLCache.shared.removeAllCachedResponses()
let task = defaultSession.dataTask(with: url){
(data, response, error) in
if error != nil{
print("Error al descargar datos")
}else{
print("Datos descargados")
self.parseJSON(data!)
}
}
task.resume()
}
func parseJSON(_ data:Data){
var jsonResult = NSArray()
do{
jsonResult = try JSONSerialization.jsonObject(with: data, options: JSONSerialization.ReadingOptions.allowFragments) as! NSArray
}catch let error as NSError{
print(error)
}
var jsonElement = NSDictionary()
let detalles = NSMutableArray()
for i in 0 ..< jsonResult.count{
jsonElement = jsonResult[i] as! NSDictionary
let detalle = DetallesIntereses()
let idInteres = jsonElement["idInteres"]
let nombreInteres = jsonElement["interesNombre"]
detalle.idInteres = idInteres as? String
detalle.nombreInteres = nombreInteres as? String
detalles.add(detalle)
}
DispatchQueue.main.async(execute: { ()-> Void in
self.delegate.interesesDownload(interest: detalles)
})
}
}
DetallesIntereses.swift
import UIKit
class DetallesIntereses: NSObject {
var idInteres: String?
var nombreInteres: String?
override init() {
}
init(idInteres: String, nombreInteres:String) {
self.idInteres = idInteres
self.nombreInteres = nombreInteres
}
override var description: String{
return "idInteres: \(idInteres), nombreInteres: \(nombreInteres)"
}
}
InteresesViewController.swift
import UIKit
class InteresesViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, InteresesModeloProtocol {
var selectIntereses = [String]()
var feedInterests: NSArray = NSArray()
// var selectInterests: DetallesIntereses = DetallesIntereses()
var items=[String]()
#IBOutlet var listaInteresesTableView: UITableView!
func interesesDownload(interest: NSArray) {
feedInterests = interest
self.listaInteresesTableView.reloadData()
}
override func viewDidLoad() {
self.listaInteresesTableView.isEditing = true
self.listaInteresesTableView.allowsMultipleSelectionDuringEditing = true
self.listaInteresesTableView.delegate = self
self.listaInteresesTableView.dataSource = self
let interesesModelo = InteresesModelo()
interesesModelo.delegate = self
interesesModelo.interestDownload()
super.viewDidLoad()
// Do any additional setup after loading the view.
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return feedInterests.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "celInterests", for: indexPath) as! InteresesTableViewCell
let interest: DetallesIntereses = feedInterests[indexPath.row] as! DetallesIntereses
cell.lblNombreIntereses!.text = interest.nombreInteres
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
self.selectDeselectCell(tableView: listaInteresesTableView, indexPath: indexPath)
print("Seleccionado")
}
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
self.selectDeselectCell(tableView: listaInteresesTableView, indexPath: indexPath)
print("Deseleccionado")
}
func selectDeselectCell(tableView: UITableView, indexPath: IndexPath){
self.selectIntereses.removeAll()
if let arr = listaInteresesTableView.indexPathsForSelectedRows{
for index in arr{
selectIntereses.append(feedInterests[indexPath.row] as! String)
}
}
print(selectIntereses)
}
#IBAction func seleccionarIntereses(_ sender: Any){
print(selectIntereses)
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before 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.
}
*/
}
The JSON
[
{
"idInteres": "1",
"interesNombre": "Moda Mujer"
},
{
"idInteres": "3",
"interesNombre": "Moda Hombre"
},
{
"idInteres": "4",
"interesNombre": "Belleza"
},
{
"idInteres": "5",
"interesNombre": "Relojes y JoyerÃa"
},
{
"idInteres": "6",
"interesNombre": "Hogar/Interiorismo"
},
{
"idInteres": "7",
"interesNombre": "GastronomÃa"
},
{
"idInteres": "8",
"interesNombre": "Entretenimiento"
},
{
"idInteres": "9",
"interesNombre": "Wellness"
}
]
I hope you can help me, please.
I thank you all
There's lots of little stuff going on here. I've tried to highlight as I make edits with //<-- Here.
By far the biggest issue is using the untyped Objective-C NSArray instead of using a typed Swift array. By switching to that, you can get useful type errors.
I had to make a couple of assumptions about what you wanted to do, but this should get you started.
I've left the original JSON decoding for the most part, but I'd strongly suggest you look into using Codable instead of JSONSerialization unless you have a compelling reason not to.
protocol InteresesModeloProtocol : AnyObject {
func interesesDownload (interest: [DetallesIntereses]) //<-- Here
}
class InteresesModelo: NSObject {
weak var delegate: InteresesModeloProtocol!
let urlPath = "http://localhost:8888/mallconcierge/API-movil/interests.php"
func interestDownload(){
let url: URL = URL(string: urlPath)!
let defaultSession = Foundation.URLSession(configuration: URLSessionConfiguration.ephemeral)
URLCache.shared.removeAllCachedResponses()
let task = defaultSession.dataTask(with: url){
(data, response, error) in
if error != nil{
print("Error al descargar datos")
}else{
print("Datos descargados")
self.parseJSON(data!)
}
}
task.resume()
}
func parseJSON(_ data:Data){
var jsonResult = [[String:String]]()
do{
jsonResult = try JSONSerialization.jsonObject(with: data, options: JSONSerialization.ReadingOptions.allowFragments) as! [[String : String]]
}catch let error as NSError{
print(error)
}
let detalles = jsonResult.map { jsonElement -> DetallesIntereses in
let detalle = DetallesIntereses(idInteres: jsonElement["idInteres"], nombreInteres: jsonElement["interesNombre"])
return detalle
}
DispatchQueue.main.async {
self.delegate.interesesDownload(interest: detalles)
}
}
}
struct DetallesIntereses { //<-- Here -- no reason for this to be an `NSObject`
var idInteres: String?
var nombreInteres: String?
}
class InteresesViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, InteresesModeloProtocol {
var selectIntereses = [DetallesIntereses]() //<-- Here
var feedInterests: [DetallesIntereses] = [] //<-- Here
var items = [String]()
#IBOutlet var listaInteresesTableView: UITableView!
func interesesDownload(interest: [DetallesIntereses]) { //<-- Here
feedInterests = interest //<-- Here
self.listaInteresesTableView.reloadData()
}
override func viewDidLoad() {
self.listaInteresesTableView.isEditing = true
self.listaInteresesTableView.allowsMultipleSelectionDuringEditing = true
self.listaInteresesTableView.delegate = self
self.listaInteresesTableView.dataSource = self
let interesesModelo = InteresesModelo()
interesesModelo.delegate = self
interesesModelo.interestDownload()
super.viewDidLoad()
// Do any additional setup after loading the view.
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return feedInterests.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "celInterests", for: indexPath) as! InteresesTableViewCell
let interest: DetallesIntereses = feedInterests[indexPath.row] //<-- Here
cell.lblNombreIntereses!.text = interest.nombreInteres
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
self.selectDeselectCell(tableView: listaInteresesTableView, indexPath: indexPath)
print("Seleccionado")
}
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
self.selectDeselectCell(tableView: listaInteresesTableView, indexPath: indexPath)
print("Deseleccionado")
}
func selectDeselectCell(tableView: UITableView, indexPath: IndexPath){
self.selectIntereses.removeAll()
selectIntereses.append(feedInterests[indexPath.row]) //<-- Here
print(selectIntereses)
}
#IBAction func seleccionarIntereses(_ sender: Any){
print(selectIntereses)
}
}
Please advice how can I paginate my tableview. I get data from the CocktailDB API and parse JSON with Decodable. There are categories and drinks from these categories.
I want to firstly load 10 drinks and then load more when I scroll to the bottom of the page.
I considered using willDisplay method by tableview.
Thank you in advance!
My code:
class ViewController: UIViewController {
struct OneCategory {
let name : String
var drinks : [Drink]
}
var drinks = [Drink]()
var categories = [OneCategory]()
var selectedCategoriesArr: [String] = []
#IBOutlet weak var tableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
loadAllCategories()
}
func loadAllCategories() {
let url = URL(string: "https://www.thecocktaildb.com/api/json/v1/1/list.php?c=list")
URLSession.shared.dataTask(with: url!) { (data, response, error) in
if let error = error {
print(error)
return
}
do {
let result = try JSONSerialization.jsonObject(with: data!) as! [String:Any]
let categoryNames = (result["drinks"] as! [[String:String]]).map{$0["strCategory"]!}
let group = DispatchGroup()
for category in categoryNames {
let categoryURLString = "https://www.thecocktaildb.com/api/json/v1/1/filter.php?c=\(category)"
.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed)!
let categoryURL = URL(string: categoryURLString)!
group.enter()
let categoryTask = URLSession.shared.dataTask(with: categoryURL) { (categoryData, _, categoryError) in
defer {
group.leave()
}
if let categoryError = categoryError {
print(categoryError)
return
}
do {
let drinks = try JSONDecoder().decode(Response.self, from: categoryData!).drinks
self.categories.append(OneCategory(name: category, drinks: drinks))
} catch {
print(error)
}
}
categoryTask.resume()
}
group.notify(queue: .main) {
self.tableView.reloadData()
}
} catch {
print(error)
}
}.resume()
}
}
extension ViewController: UITableViewDataSource, UITableViewDelegate {
func numberOfSections(in tableView: UITableView) -> Int {
return categories.count
}
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return categories[section].name
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return categories[section].drinks.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "drinkCell") as! DrinkCell
let category = categories[indexPath.section]
let drink = category.drinks[indexPath.row]
cell.drinkName.text = drink.strDrink
let url = drink.strDrinkThumb
cell.drinkImage.downloaded(from: url)
return cell
}
}
Models:
struct Response:Decodable {
var drinks: [Drink]
}
struct Drink:Decodable {
var strDrink: String
var strDrinkThumb: String
}
struct Categories:Decodable {
var drinks: [Category]
}
struct Category:Decodable {
var strCategory: String
}
I have a tableview loading data from firebase database. When i open my app the data does not populate. it crashes and throws the error index out of range. I am fairly new to xcode and would appreciate the help. i have been given recommendations on how to fix my code with regards to having multiple arrays but everyone that advices forget i'm new and does realize that i am pulling imageurls into my tableview too and dont know how to adopt their recommendations into my code. if i could get help getting passed this error that would be awesome.
import UIKit
import FirebaseAuth
import FirebaseDatabase
class EventsViewController: UIViewController,UITableViewDelegate,UITableViewDataSource {
#IBOutlet weak var tableView: UITableView!
var eventsRef: DatabaseReference?
var eventsDatabaseHandle:DatabaseHandle?
var eventsTitles = [String]()
var eventTimestamps = [String]()
var eventsLocations = [String]()
var eventsImages = [UIImage]()
#IBOutlet weak var addEventsButton: UIBarButtonItem!
override func viewDidLoad() {
super.viewDidLoad()
adminAuth()
eventsRef = Database.database().reference()
tableView.reloadData()
tableView.transform = CGAffineTransform(rotationAngle: -CGFloat.pi)
tableView.delegate = self
tableView.dataSource = self
eventsDatabaseHandle = eventsRef?.child("Church Events").observe(.childAdded, with: { (snaphot) in
let eventPost = snaphot.value as! [String: Any]
self.eventTimestamps.append(eventPost["eventdate"] as! String)
self.eventsTitles.append(eventPost["eventtitle"] as! String)
self.eventsLocations.append(eventPost["eventlocation"] as! String)
let task = URLSession.shared.dataTask(with: URL(string: eventPost["ImageUrl"] as! String)!) {(data, response, error) in
if let image: UIImage = UIImage(data: data!) {
self.eventsImages.append(image)
}
}
task.resume()
self.tableView.reloadData()
})
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return eventsTitles.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "events") as! EventsTableViewCell
// let image = eventsImages[indexPath.row]
cell.flyerImages.image? = eventsImages[indexPath.row] **<- index out of range**
cell.eventTitle.text! = eventsTitles[indexPath.row]
cell.eventDate.text! = eventTimestamps[indexPath.row]
cell.eventLocation.text! = eventsLocations[indexPath.row]
cell.transform = CGAffineTransform(rotationAngle: CGFloat.pi)
return cell
}
func adminAuth() {
if (Auth.auth().currentUser!.displayName != "Neil Leon") {
self.addEventsButton.tintColor = UIColor.clear
self.addEventsButton.isEnabled = false
}
else{
self.addEventsButton.isEnabled = true
}
}
}``````
At the moment reloadData is called the image array is empty and causes the crash
Use a custom struct and reload the table view after the image data has been received
struct Event {
let title, timestamp, location : String
var image : UIImage?
}
var events = [Event]()
...
eventsDatabaseHandle = eventsRef?.child("Church Events").observe(.childAdded, with: { (snaphot) in
let eventPost = snaphot.value as! [String: Any]
let event = Event(title: eventPost["eventtitle"] as! String,
timestamp: eventPost["eventdate"] as! String,
location: eventPost["eventlocation"] as! String,
image: nil)
let task = URLSession.shared.dataTask(with: URL(string: eventPost["ImageUrl"] as! String)!) { data, _, error in
if let error = error {
print(error)
} else {
event.image = UIImage(data: data!)
DispatchQueue.main.async {
self.events.append(event)
self.tableView.reloadData()
}
}
}
task.resume()
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return events.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "events", for: indexPath) as! EventsTableViewCell
let event = events[indexPath.row]
cell.flyerImages.image = event.image
cell.eventTitle.text = event.title
cell.eventDate.text = event.timestamp
cell.eventLocation.text = event.location
cell.transform = CGAffineTransform(rotationAngle: CGFloat.pi)
return cell
}
I have a tableview loading data from firebase database. When I open my app the data does not populate. when I create a new post I can see the tableview cells modifying like changed were made but the post doesn't populate. I can't figure it out.
import UIKit
import FirebaseAuth
import FirebaseDatabase
class EventsViewController: UIViewController,UITableViewDelegate,UITableViewDataSource {
#IBOutlet weak var tableView: UITableView!
var eventsRef: DatabaseReference?
var eventsDatabaseHandle:DatabaseHandle?
var eventsTitles = [String]()
var eventTimestamps = [String]()
var eventsLocations = [String]()
var eventsImages = [UIImage]()
#IBOutlet weak var addEventsButton: UIBarButtonItem!
override func viewDidLoad() {
super.viewDidLoad()
adminAuth()
eventsRef = Database.database().reference()
tableView.reloadData()
tableView.transform = CGAffineTransform(rotationAngle: -CGFloat.pi)
tableView.delegate = self
tableView.dataSource = self
eventsDatabaseHandle = eventsRef?.child("Church Events").observe(.childAdded, with: { (snaphot) in
let eventPost = snaphot.value as! [String: Any]
self.eventTimestamps.append(eventPost["eventdate"] as! String)
self.eventsTitles.append(eventPost["eventtitle"] as! String)
self.eventsLocations.append(eventPost["eventlocation"] as! String)
let task = URLSession.shared.dataTask(with: URL(string: eventPost["ImageUrl"] as! String)!) {(data, response, error) in
if let image: UIImage = UIImage(data: data!) {
self.eventsImages.append(image)
}
}
self.tableView.reloadData()
task.resume()
})
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return eventsImages.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "events") as! EventsTableViewCell
let image = eventsImages[indexPath.row]
cell.flyerImages.image! = image
cell.eventTitle.text! = eventsTitles[indexPath.row]
cell.eventDate.text! = eventTimestamps[indexPath.row]
cell.eventLocation.text! = eventsLocations[indexPath.row]
cell.transform = CGAffineTransform(rotationAngle: CGFloat.pi)
tableView.reloadData()
return cell
}
func adminAuth() {
if (Auth.auth().currentUser!.displayName != "Neil Leon") {
self.addEventsButton.tintColor = UIColor.clear
self.addEventsButton.isEnabled = false
}
else{
self.addEventsButton.isEnabled = true
}
}
}
image of empty tableview
]
So the code below is not tested as I don't have firebase setup currently.
However, observing childAdded... the documentation says it will pass all of the current records in the database at first and will then just post new additions. So all you need to do is loop through them, setup your tableView data source and reload the table.
Rather than use multiple arrays for values I've created an array of ChurchEvent objects instead.
struct ChurchEvents {
let title: String
let location: String?
let date: Date?
let imageUrlString: String?
init(dict: [String: Any]) {
self.title = dict["title"] as String
self.location = dict["location"] as? String
// etc
}
}
var events = [ChurchEvents]()
eventsDatabaseHandle = eventsRef?.child("Church Events").observe(.childAdded, with: { snapshot in
let list = snapshot.value as? [[String : AnyObject]]
let newEvents = list.map { ChurchEvent(dict: $0) }
events.append(newEvents)
tableView.reloadData()
}
Other improvements you could make:
class EventsTableViewCell: UICollectionViewCell {
func configure(with event: ChurchEvent {
eventDate.text = event.date
eventTitle.text = event.title
eventLocation.text = event.location
// etc
}
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "events") as! EventsTableViewCell
let event = events[indexPath.row]
cell.configure(with: event)
return cell
}
I've got a couple a problem with this code. Here's my code and I don't understand why there is an error line 61 with cell.userID = self.user[indexPath.row].userID it says : Cannot assign value of type String? to type String?.Type. It's probably because in line 36 : if let uid = value["profilepicture.userID"] as? String. userID is in Firebase a child of profile picture but I don't know how to write that inside of value[]. Thanks for your answers.
// TableViewCell.swift
import UIKit
class FriendsTableViewCell: UITableViewCell {
#IBOutlet weak var userImage: UIImageView!
#IBOutlet weak var nameLabel: UILabel!
var userID = String?.self
}
// ViewController.swift
import UIKit
import Firebase
class FriendsViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
#IBOutlet weak var tableview: UITableView!
var user = [User]()
override var preferredStatusBarStyle: UIStatusBarStyle {
return .lightContent
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
func retrieveUsers() {
let ref = Database.database().reference()
ref.child("users").queryOrderedByKey().observeSingleEvent(of: .value, with: { DataSnapshot in
let users = DataSnapshot.value as! [String: AnyObject]
self.user.removeAll()
for (_, value) in users{
//let uid = Auth.auth().currentUser!.uid
if let uid = value["profilepicture.userID"] as? String{
if uid != Auth.auth().currentUser!.uid {
let userToShow = User()
if let fullName = value["username"] as? String , let imagePath = value["profilepicture.photoURL"] as? String {
userToShow.username = fullName
userToShow.imagePath = imagePath
userToShow.userID = uid
self.user.append(userToShow)
}
}
}
}
})
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell{
let cell = tableview.dequeueReusableCell(withIdentifier: "FriendsTableViewCell", for: indexPath) as! FriendsTableViewCell
cell.nameLabel.text = self.user[indexPath.row].username
cell.userID = self.user[indexPath.row].userID
cell.userImage.downloadImage(from: self.user[indexPath.row].imagePath!)
return cell
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return user.count ?? 0
}
}
extension UIImageView{
func downloadImage(from imgURL: String!) {
let url = URLRequest(url: URL(string: imgURL)!)
let task = URLSession.shared.dataTask(with: url) { (data, response, error) in
if error != nil{
print(error)
return
}
DispatchQueue.main.async {
self.image = UIImage(data: data!)
}
}
task.resume()
}
}
Cannot assign value of type String? to type String?.Type.
Change
var userID = String?.self
To
var userID : String?