Parsing json data through alamofire in table view cells - ios

Question

I am trying to parse json data in my table view cell and its not parsing and not showing the cells . I am attaching all my code please tell me whats the mistake i am doing .. I am not getting any error but the cells are not showing. I have made separate class and functions for json parsing and storing it in an array .
//
// ViewController.swift
// WorkingFeed2
//
// Created by keshu rai on 08/08/17.
// Copyright © 2017 keshu rai. All rights reserved.
//
import UIKit
import Alamofire
import MediaPlayer
class ViewController: UIViewController , UITableViewDelegate , UITableViewDataSource{
var post : PostData!
var posts = [PostData]()
typealias DownloadComplete = () -> ()
var arrayOfPostData : [String] = []
#IBOutlet weak var feedTable: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
feedTable.dataSource = self
feedTable.delegate = self
}
func downloadPostData(completed: #escaping DownloadComplete) {
Alamofire.request("https://new.example.com/api/posts/get_all_posts").responseJSON { response in
let result = response.result
if let dict = result.value as? Dictionary<String,AnyObject> {
if let successcode = dict["STATUS_CODE"] as? Int {
if successcode == 1 {
if let postsArray = dict["posts"] as? [Dictionary<String,AnyObject>]
{
for obj in postsArray
{
let post = PostData(postDict: obj)
self.posts.append(post)
print(obj)
}
// self.posts.remove(at: 0)
self.feedTable.reloadData()
}
}
}
}
}
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return posts.count
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 419
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell : ImageTableViewCell = self.feedTable.dequeueReusableCell(withIdentifier: "contentViewReuse") as! ImageTableViewCell
let post = posts[indexPath.row]
print(post)
cell.configureCell(post : post)
return cell
}
}
This is my PostData Class.
import Foundation
class PostData {
var _profileImageURL : String?
var _fullName : String?
var _location : String?
var _title : String?
var _postTime : String?
var _likes : Int?
var _comments : Int?
var _mediaType : String?
var _contentURL : String?
var _content : String?
var _plocation : String?
var profileImageURL : String
{
if _profileImageURL == nil {
_profileImageURL = ""
}
return _profileImageURL!
}
var fullName : String
{
if _fullName == nil {
_fullName = ""
}
return _fullName!
}
var location : String {
if _location == nil {
_location = ""
}
return _location!
}
var title : String {
if _title == nil {
_title = ""
}
return _title!
}
var postTime : String {
if _postTime == nil {
_postTime = ""
}
return _postTime!
}
var likes : Int {
if _likes == nil {
_likes = 0
}
return _likes!
}
var comments : Int {
if _comments == nil {
_comments = 0
}
return _comments!
}
var mediaType : String {
if _mediaType == nil {
_mediaType = ""
}
return _mediaType!
}
var contentURL : String {
if _contentURL == nil {
_contentURL = ""
}
return _contentURL!
}
var content : String {
if _content == nil {
_content = ""
}
return _content!
}
var pLocation : String {
if _plocation == nil {
_plocation = ""
}
return _plocation!
}
init(postDict : Dictionary<String , AnyObject>)
{
if let postsArray = postDict["posts"] as? [Dictionary<String,AnyObject>]
{
for i in 1..<postsArray.count
{
let fullName1 = postsArray[i]["full_name"] as? String
self._fullName = fullName1
let profileImageURL1 = postsArray[i]["profile_pic"] as? String
self._profileImageURL = profileImageURL1
let location1 = postsArray[i]["user_city"] as? String
self._location = location1
let title1 = postsArray[i]["title"] as? String
self._title = title1
let postTime1 = postsArray[i]["order_by_date"] as? String
self._postTime = postTime1
let likes1 = postsArray[i]["liked_count"] as? Int
self._likes = likes1
let comments1 = postsArray[i]["comment_count"] as? Int
self._comments = comments1
let mediaType1 = postsArray[i]["media_path"] as? String
self._mediaType = mediaType1
let contentURL1 = postsArray[i]["media_path"] as? String
self._contentURL = contentURL1
let content1 = postsArray[i]["content"] as? String
self._content = content1
let plocation1 = postsArray[i]["location"] as? String
self._plocation = plocation1
}
}
}
}
This is my PostDataTableViewCell code.
import UIKit
import Alamofire
class PostDataTableViewCell: UITableViewCell {
#IBOutlet weak var profileImage: UIImageView!
#IBOutlet weak var titlePost: UILabel!
#IBOutlet weak var profileFullName: UILabel!
#IBOutlet weak var profileUserLocation: UILabel!
#IBOutlet weak var likeBtn: UIButton!
var buttonAction: ( () -> Void) = {}
var pressed = false
#IBAction func likeBtnPressed(_ sender: Any) {
if !pressed {
let image = UIImage(named: "Like-1.png") as UIImage!
likeBtn.setImage(image, for: .normal)
pressed = true
} else {
let image = UIImage(named: "liked.png") as UIImage!
likeBtn.transform = CGAffineTransform(scaleX: 0.15, y: 0.15)
UIView.animate(withDuration: 2.0,
delay: 0,
usingSpringWithDamping: 0.2,
initialSpringVelocity: 6.0,
options: .allowUserInteraction,
animations: { [weak self] in
self?.likeBtn.transform = .identity
},
completion: nil)
likeBtn.setImage(image, for: .normal)
pressed = false
}
}
#IBAction func commentBtnPressed(_ sender: Any) {
print("Commented")
}
#IBAction func shareBtnPressed(_ sender: Any) {
self.buttonAction()
}
#IBAction func readContentBtnPressed(_ sender: Any) {
print("Read")
}
#IBOutlet weak var contentPostLabel: UILabel!
#IBOutlet weak var contentTypeView: UIView!
#IBOutlet weak var likeAndCommentView: UIView!
#IBOutlet weak var numberOfLikes: UILabel!
#IBOutlet weak var numberOfComments: UILabel!
#IBOutlet weak var postLocation: UILabel!
#IBOutlet weak var postTimeOutlet: UILabel!
func configureCell(post : PostData)
{
titlePost.text = "\(post.title)"
profileFullName.text = "\(post.fullName)"
profileUserLocation.text = "\(post.location)"
numberOfLikes.text = "\(post.likes) Likes"
numberOfComments.text = "\(post.comments) Comments"
postLocation.text = "\(post.pLocation)"
postTimeOutlet.text = "\(post.postTime)"
let url = URL(string: post.profileImageURL)
let data = try? Data(contentsOf: url!)
profileImage.image = UIImage(data: data!)
contentPostLabel.text = "\(post.content)"
if post.mediaType == "image"
{
let url1 = URL(string: post.contentURL)
let data1 = try? Data(contentsOf: url1!)
let image = UIImage(data: data1!)
let imageToView = UIImageView(image: image!)
imageToView.frame = CGRect(x: 0, y: 0, width: 375 , height: 250)
imageToView.contentMode = UIViewContentMode.scaleToFill
contentTypeView.addSubview(imageToView)
}
else if post.mediaType == "null"
{
print("Status")
}
else if post.mediaType == "video"
{
print("Video")
}
else if post.mediaType == "youtube"
{
print("youtube")
}
}
}

Answer 1

Most likely the issue occurs because you are trying to parse the value for key posts twice, once in PostData and once in ViewController.
First of all in Swift 3 a JSON dictionary is [String:Any], secondly – as already mentioned in my comment – private backing variables are nonsense in Swift.
The class PostData can be reduced to
class PostData {
let profileImageURL : String
let fullName : String
let location : String
let title : String
let postTime : String
let likes : Int
let comments : Int
let mediaType : String
let contentURL : String
let content : String
let plocation : String
init(postDict : [String:Any])
{
fullName = postDict["full_name"] as? String ?? ""
profileImageURL = postDict["profile_pic"] as? String ?? ""
location = postDict["user_city"] as? String ?? ""
title = postDict["title"] as? String ?? ""
postTime = postDict["order_by_date"] as? String ?? ""
likes = postDict["liked_count"] as? Int ?? 0
comments = postDict["comment_count"] as? Int ?? 0
mediaType = postDict["media_path"] as? String ?? ""
contentURL = postDict["media_path"] as? String ?? ""
content = postDict["content"] as? String ?? ""
plocation = postDict["location"] as? String ?? ""
}
}