Populate table view from different Swift file - ios

Question

I am having Search view Controller:
Refer This Image .
In this image you can see it has tableview, search_textfiled and advance search button. So if I put some text in search field and click on search icon it use to fire query and it is populating the result in the table. But when clicking on Advance search it use to open one popover, which is having some text_field.
Refer this image for Popover.
So after entering value in all fields I have to do search and fire query and populate table view present in Search view controller. So when clicking on search I am calling that full_text_search function which use to fire query and populate data in table view. So in popover controller creating instance of search controller and calling search function but it is showing thread exception.
func full_text_search(){
self.view.endEditing(true)
image_contain.removeAll()
datafiles.removeAll()
search_table.reloadData()
search_table.delegate = self
search_table.dataSource = self
let defaults = UserDefaults.standard
let username = defaults.string(forKey: "username")
let password = defaults.string(forKey: "password")
var check_icon_flag = 0
let loginData = String(format: "%#:%#", username!, password!).data(using: String.Encoding.utf8)!
let base64LoginData = loginData.base64EncodedString()
let serarchbar_text = search_text.text
print(serarchbar_text)
var new_String = "http://xx.xxxx.com:9090/dtm-rest/repositories/xxx/search?q='"
new_String.append(serarchbar_text!+"'&object-type=dm_document")
let again_new_String = new_String.addingPercentEncoding(withAllowedCharacters: CharacterSet.urlQueryAllowed)
let url = URL(string: again_new_String!)
print(again_new_String)
var request = URLRequest(url: url!)
request.httpMethod = "GET"
request.setValue("Basic \(base64LoginData)", forHTTPHeaderField: "Authorization")
##After this use to fetch query result and at last i use refresh table data
So in above code it use to show thread exception in
search_table.reloadData
search_table.delegate = self
search_table.dataSource = self
If I call this function from search controller it is working fine. This function is defined in search controller only.But calling from popover controller it is giving exception.Below function shows calling full_text_search function from popover view controller.
#IBAction func Search(_ sender: Any) {
DispatchQueue.main.asyncAfter(deadline: .now() + 10) {
print("2sec")
let check_search = SearchViewController()
check_search.full_text_search()
}
removeAnimate()
}
What to do if I want to add some values to query using popover view and then do search.
How I am calling popover :
#IBAction func advance_search(_ sender: Any) {
let popOverVC = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "types_popover") as! TypesViewController
self.addChildViewController(popOverVC)
popOverVC.view.frame = self.view.frame
self.view.addSubview(popOverVC.view)
popOverVC.didMove(toParentViewController: self)
}

Answer 1

instead of populating the tableView from another VC, use delegates to populate it in its own VC, read more about delegates
Here
so inside the popover VC, you pass the parameters you required for search and fire up a function inside the tableview VC, and perform the searching pretty simple
in your case the delegate protocol function should hold all the required search parameters