Using AlamoFire to fetch data to populate UITableView based on UISearchBar value - json

Question

Unlike many JSON requests, instead of filtering a long pre-determined JSON, I intend to send a JSON request (using AlamoFire) based on what is typed into a Search Bar, thus fetching the JSON to be parsed (with SwiftyJSON) to fill the UITableView
What I'd like to do is to use the searchTerm (typed into the searchbar) to send an AlamoFire request to Geonames using the searchTerm in the query field of geonames API request. i.e.
http://api.geonames.org/searchJSON?formatted=true&q=(searchTerm)&maxRows=3&username=demo
What I essentially cannot do is send the request AFTER filling out the Search Bar, and therefore populate the table with that data.
Below is my current code (which populates the table upon the view loading with parsed JSON data with a request for "burpham"
import UIKit
import Alamofire
import SwiftyJSON
class SearchAddLocationViewController: UIViewController, UITableViewDataSource, UITableViewDelegate
{
#IBOutlet weak var tblJSON: UITableView!
#IBOutlet weak var searchbarValue: UISearchBar!
weak open var delegate: UISearchBarDelegate?
var arrRes = [[String:AnyObject]]() //Array of dictionary
override func viewDidLoad()
{
super.viewDidLoad()
}
public func searchBarTextDidEndEditing(_ searchBar: UISearchBar) // called when text ends editing
{
callAlamo(searchTerm: searchbarValue.text!)
}
func callAlamo(searchTerm: String)
{
Alamofire.request("http://api.geonames.org/searchJSON?q=\(searchTerm)&maxRows=5&username=garethallenstringer").responseJSON { (responseData) -> Void in
if((responseData.result.value) != nil) {
let swiftyJsonVar = JSON(responseData.result.value!)
if let resData = swiftyJsonVar["geonames"].arrayObject {
self.arrRes = resData as! [[String:AnyObject]]
}
if self.arrRes.count > 0 {
self.tblJSON.reloadData()
}
}
}
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell : UITableViewCell = tableView.dequeueReusableCell(withIdentifier: "addLocProtoCell")!
var dict = arrRes[indexPath.row]
cell.textLabel?.text = dict["name"] as? String
cell.detailTextLabel?.text = dict["countryName"] as? String
return cell
}
public func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
return arrRes.count
}
override func didReceiveMemoryWarning()
{
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}

Answer 1

You need to listen func searchBarTextDidEndEditing(_ searchBar: UISearchBar) method of UISearchBar delegate for populating your UITableView
class ViewController: UIViewController, UISearchBarDelegate {
#IBOutlet private weak var searchBar: UISearchBar?
override func viewDidLoad() {
super.viewDidLoad()
self.searchBar?.delegate = self
}
//MARK: UISearchBarDelegate methods
func searchBarSearchButtonClicked(_ searchBar: UISearchBar) {
//You can do your request via Alamofire to populate tableView
}
}
UPDATE #1
import UIKit
import Alamofire
import SwiftyJSON
class SearchAddLocationViewController: UIViewController, UITableViewDataSource, UITableViewDelegate, UISearchBarDelegate
{
#IBOutlet weak var tblJSON: UITableView!
#IBOutlet weak var searchbarValue: UISearchBar!
var arrRes = [[String:AnyObject]]() //Array of dictionary
override func viewDidLoad()
{
super.viewDidLoad()
self.searchbarValue.delegate = self
}
func searchBarSearchButtonClicked(_ searchBar: UISearchBar) { // called when text ends editing
{
callAlamo(searchTerm: searchbarValue.text!)
}
func callAlamo(searchTerm: String)
{
Alamofire.request("http://api.geonames.org/searchJSON?q=\(searchTerm)&maxRows=5&username=garethallenstringer").responseJSON { (responseData) -> Void in
if((responseData.result.value) != nil) {
let swiftyJsonVar = JSON(responseData.result.value!)
if let resData = swiftyJsonVar["geonames"].arrayObject {
self.arrRes = resData as! [[String:AnyObject]]
}
if self.arrRes.count > 0 {
self.tblJSON.reloadData()
}
}
}
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell : UITableViewCell = tableView.dequeueReusableCell(withIdentifier: "addLocProtoCell")!
var dict = arrRes[indexPath.row]
cell.textLabel?.text = dict["name"] as? String
cell.detailTextLabel?.text = dict["countryName"] as? String
return cell
}
public func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
return arrRes.count
}
override func didReceiveMemoryWarning()
{
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}