Tableview not reloading data - ios

Question

I am stuck on this minor issue, I have a tableviewcontroller which is also searchresultcontroller. I am getting correct data against each api call but tableview is not reloading. I have no clue why its not working. Any help or lead will be very much appreciated.
class MasterViewController: UITableViewController,UISearchResultsUpdating {
var request:DataRequest?
var peopleArr:[Peoples] = []
// MARK: - View Setup
override func viewDidLoad() {
super.viewDidLoad()
self.title = "Search"
definesPresentationContext = true
}
override func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return 50.0
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if indexPath.section == 1 {
// if searchController.searchBar.selectedScopeButtonIndex == 0 {
let profileVc = self.storyboard?.instantiateViewController(withIdentifier: "profileVc") as! ProfileController
profileVc.profileData = (peopleArr[indexPath.row].user_id, peopleArr[indexPath.row].user_id)
self.navigationController?.pushViewController(profileVc, animated: true)
}
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return peopleArr.count
}
override func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
return tableView.dequeueReusableCell(withIdentifier: "headerPeopleSec")
}
override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return "People"
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "FollowingsCell", for: indexPath) as! FollowingsCell
cell.textLabel?.text = "\(indexPath.row)"
let people: Peoples
people = peopleArr[indexPath.row]
if people.following == "1" {
cell.followBtn.isHidden = true
}
else{
cell.followBtn.isHidden = false
}
cell.profile_thumb!.showImageWithURL(urlString: people.photo_url)
cell.addAction = { cell in
self.addFriendAction(indexPath: indexPath , user:people)
}
cell.profile_thumb.motionIdentifier = people.user_id
cell.username.text = people.user_name
return cell
}
func getPeopleList(searchString:String?) {
if let req = self.request {
req.cancel()
}
let peopleBag = [
"auth_token": (MemberProfile.loggedUser?._auth_token())!,
"per_page": 30,
"page": 1,
"search_key": searchString ?? ""
] as [String : Any]
NVActivityIndicatorPresenter.sharedInstance.startAnimating(activityData)
self.request = HelperClass().doGetRequestCustom(url: BASE_URL + SEARCH_PEOPLE, param:peopleBag, header: [:], completion: {(response,responseObject, error) in
if let resMsg = (responseObject?.message.resp_status) {
NVActivityIndicatorPresenter.sharedInstance.stopAnimating()
// if let hasNext = responseObject?.message.paging_data.next_page_exist as? Bool {
// self.hasNextPage = hasNext
// }
let dictionary:[String: AnyObject]? = responseObject?.message.data as? [String:AnyObject] //["member_followings"]
if let dict:Array = dictionary?["member_profiles"] as? Array<[String:AnyObject]>{
for dic in dict {
let friend = Peoples()
friend.photo_url = (dic["photo"] as? String) ?? ""
friend.user_name = ((dic["user"]?["username"])! as String)
friend.user_id = (dic["id"])! as! String
friend.following = (dic["is_following"])! as! String
self.peopleArr.append(friend)
}
self.tableView.reloadData()
}
else{
}
}
else{
NVActivityIndicatorPresenter.sharedInstance.stopAnimating()
}
NVActivityIndicatorPresenter.sharedInstance.stopAnimating()
})
}
func addFriendAction(indexPath:IndexPath , user:Peoples) {
let followBag = [
"auth_token": (MemberProfile.loggedUser?.auth_token)!,
"following_profile_id": user.user_id
] as [String : Any]
NVActivityIndicatorPresenter.sharedInstance.startAnimating(activityData)
HelperClass().doPostRequest(url: BASE_URL+FOLLOW_MEMBER , param: followBag, completion: { (dataResponse,response,error) in
if (response != nil) && (response?.message.resp_status)!
{
NVActivityIndicatorPresenter.sharedInstance.stopAnimating()
let cell = self.tableView.cellForRow(at: indexPath) as! FollowingsCell
cell.followBtn.isHidden = true
user.following = "1"
}
else
{
if (response != nil){
NVActivityIndicatorPresenter.sharedInstance.stopAnimating()
HelperClass.showAlertViewWithTitle(title: "Error", Text: (response?.message.message)!, controllerToShowOn: self)
}
else{
NVActivityIndicatorPresenter.sharedInstance.stopAnimating()
HelperClass.showAlertViewWithTitle(title: "Error", Text: "Something went wrong. Please check your internet connection & try again later.", controllerToShowOn: self)
}
return
}
})
}
func updateSearchResults(for searchController: UISearchController) {
if !(searchController.searchBar.text! == "") {
self.peopleArr.removeAll()
self.tableView.reloadData()
let searchBar = searchController.searchBar
self.getPeopleList(searchString: searchBar.text!)
}
}
}

Answer 1

You need to make your reload call on the main thread:
...
for dic in dict {
let friend = Peoples()
friend.photo_url = (dic["photo"] as? String) ?? ""
friend.user_name = ((dic["user"]?["username"])! as String)
friend.user_id = (dic["id"])! as! String
friend.following = (dic["is_following"])! as! String
self.peopleArr.append(friend)
}
dispatch_async(dispatch_get_main_queue(), { () -> Void in
self.tableView.reloadData()
})
...
All UI modification always has to take place on the main thread. Most of the time you're in a completion handler you'll have to dispatch to main to modify the UI.

Answer 2

Seems something wrong in func updateSearchResults(for searchController: UISearchController).
Can you try moving self.tableView.reloadData() at the end of this function ?
It seems when reloadData is called, the array as cleared, and not yet populated with new values.