Open pdf in tableview from a json file - json

Question

I am in a bind.
My regular developer has secured a full time gig, and I am trying to finish a project.
Literally stuck on the last line of code.....
I have a tableview that parses a json file to populate and open a pdf file when a row is selected.
I reworked the tableview in order to add a searchbar and associated code, which works when running the bundle.
I am, however, stuck with connecting the didSelectRow with the appropriate pdf file.
Can someone please lend a hand? Thanks
import UIKit
import WebKit
// Model
struct Section {
var section: String
var pdfs: [PDF]
}
struct PDF {
var code: String
var name: String
var airport: String
}
class PdfVC: UIViewController {
#IBOutlet weak var tableView: UITableView!
#IBOutlet weak var webView: WKWebView!
#IBOutlet weak var tableViewLeft: NSLayoutConstraint!
#IBOutlet weak var btnMenuLeft: NSLayoutConstraint!
#IBOutlet weak var btnMenu: UIButton!
#IBOutlet weak var searchBar: UISearchBar!
//json
var jsonData: [Section] = []
var filtedJsonData: [Section] = []
//WebView
var fileName: String?
var isVideo: Bool = false
var btnMenuClose:UIBarButtonItem?
override func viewDidLoad() {
super.viewDidLoad()
hideKeyboardWhenTappedAround()
// Setup TableView
tableView.delegate = self
tableView.dataSource = self
setupData()
tableView.reloadData()
// Setup SearchBar
searchBar.delegate = self
// Setup WebView
if let fileName = fileName {
isVideo = fileName.contains(".mp4")
if let range = fileName.range(of: isVideo ? ".mp4" : ".pdf") {
self.fileName!.removeSubrange(range)
}
}
if let file = Bundle.main.url(forResource: fileName ?? "", withExtension: isVideo ? ".mp4" : ".pdf", subdirectory: nil, localization: nil) {
let request = URLRequest(url: file)
webView.load(request)
}
if let image = UIImage(named: "ico_close") {
navigationItem.rightBarButtonItem = UIBarButtonItem(image: image, style: .plain, target: self, action: #selector(onWebTap))
//self.navigationItem.leftItemsSupplementBackButton = true
btnMenuClose = UIBarButtonItem(image: image, style: .plain, target: self, action: #selector(onWebTap))
self.navigationItem.rightBarButtonItems = [btnMenuClose!];
}
//navigationItem.title = "Airport Maps"
}
private func hideKeyboardWhenTappedAround() {
let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(dismissKeyboard))
tap.cancelsTouchesInView = false
view.addGestureRecognizer(tap)
}
#objc private func dismissKeyboard() {
view.endEditing(true)
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
navigationController?.setNavigationBarHidden(false, animated: animated)
// title color to white
let titleTextAttributed: [NSAttributedString.Key: Any] = [.foregroundColor: UIColor.white, .font: UIFont(name: "HelveticaNeue-Light", size: 20) as Any]
self.navigationController?.navigationBar.titleTextAttributes = titleTextAttributed
// back arrow white
self.navigationController?.navigationBar.tintColor = UIColor.white
// blueish navigation bar
self.navigationController?.navigationBar.barTintColor = UIColor(red: 0.00, green: 0.54, blue: 0.92, alpha: 1.00)
self.navigationController?.navigationBar.isTranslucent = false
showMenu(false, animated: false)
}
private func setupData() {
// Parse data from local json file
if let path = Bundle.main.path(forResource: "airports", ofType: "json") {
do {
let data = try Data(contentsOf: URL(fileURLWithPath: path), options: .mappedIfSafe)
let jsonResult = try JSONSerialization.jsonObject(with: data, options: .mutableLeaves)
if let jsonResult = jsonResult as? [Dictionary<String, String>] {
for result in jsonResult {
if !jsonData.contains(where: { $0.section == result["Section"] }) {
let section = Section(section: result["Section"] ?? "", pdfs: [])
jsonData.append(section)
}
let pdf = PDF(code: result["Code"] ?? "", name: result["Filename"] ?? "", airport: result["Name"] ?? "")
let index = jsonData.firstIndex(where: { $0.section == result["Section"] })
if let index = index {
jsonData[index].pdfs.append(pdf)
}
}
}
} catch {
// Handle error
print("error parsing json")
}
}
// Sort data before use
jsonData.sort(by: { $0.section < $1.section })
for index in 0..<jsonData.count {
jsonData[index].pdfs.sort(by: { $0.airport < $1.airport } )
}
filtedJsonData = jsonData
}
#objc func onWebTap() {
var left:CGFloat = 0
if tableViewLeft.constant == 0 {
left = -320
}
tableViewLeft.constant = left
showMenu(left != 0, animated: true)
UIView.animate(withDuration: 0.3, delay: 0, options: .curveEaseInOut, animations: {
self.view.layoutIfNeeded()
}, completion: nil)
}
func showMenu(_ show:Bool, animated:Bool) {
if let image = UIImage(named: show ? "ico_open" : "ico_close") {
btnMenuClose?.image = image
//navigationItem.rightBarButtonItem?.image = image
//}
//var left:CGFloat = 20
//if show == false {
// left = -64
}
//btnMenuLeft.constant = left
UIView.animate(withDuration: animated ? 0.3 : 0.0, delay: 0, options: .curveEaseInOut, animations: {
self.view.layoutIfNeeded()
}, completion: nil)
}
}
// TableView
extension PdfVC: UITableViewDelegate, UITableViewDataSource {
func numberOfSections(in tableView: UITableView) -> Int {
return filtedJsonData.count
}
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
if filtedJsonData[section].pdfs.count == 0 {
return nil
}
return filtedJsonData[section].section
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return filtedJsonData[section].pdfs.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "PdfCell", for: indexPath) as! PdfCell
let pdf = filtedJsonData[indexPath.section].pdfs[indexPath.row]
cell.setupCell(pdf: pdf)
return cell
}
func scrollViewDidScroll(_ scrollView: UIScrollView) {
dismissKeyboard()
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let pdf = filtedJsonData[indexPath.section].pdfs[indexPath.row]
//THIS IS WHERE I'M STUCK<<<<<<<<<
self.title = pdf.airport
}
}
// SearchBar
extension PdfVC: UISearchBarDelegate {
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
for (index, data) in jsonData.enumerated() {
// Filter pdfs by code and name
let filtedPdf = data.pdfs.filter { $0.code.lowercased().prefix(searchText.count) == searchText.lowercased() || $0.airport.lowercased().prefix(searchText.count) == searchText.lowercased() }
filtedJsonData[index].pdfs = filtedPdf
}
tableView.reloadData()
}
func searchBarCancelButtonClicked(_ searchBar: UISearchBar) {
searchBar.text = ""
tableView.reloadData()
}
}

Answer 1

Got it figured out. Thanks for all who spent some time reading my issue. I changed as follows
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let pdf = filtedJsonData[indexPath.section].pdfs[indexPath.row]
self.fileName = pdf.name
self.title = pdf.airport
DispatchQueue.main.async {
self.reloadWebView()
}
}
and added
private func reloadWebView() {
// Setup WebView
if let fileName = fileName {
isVideo = fileName.contains(".mp4")
if let range = fileName.range(of: isVideo ? ".mp4" : ".pdf") {
self.fileName!.removeSubrange(range)
}
}
if let file = Bundle.main.url(forResource: fileName ?? "", withExtension: isVideo ? ".mp4" : ".pdf", subdirectory: nil, localization: nil) {
let request = URLRequest(url: file)
webView.load(request)
}
}