Reloading TableView using UISegmentedControl in Swift [closed] - ios

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I am creating a search screen where you can select among four different options. If one selects people, then people array gets loaded in table view cells , if he selects images then image posts get loaded in tableview .
how can i achieve the design posted above? i have created four different cells and nib files and based on the option selected in segment control , i have to load those nib files in table cell.
UPDATE ::::
I am updating all my code here which i have combined into one file.
import UIKit
import Alamofire
class SearchViewController: UIViewController , UITableViewDataSource , UITableViewDelegate , UISearchBarDelegate{
var imagepost : ImageSeachPostData!
var imageposts = [ImageSeachPostData]()
var videopost : VideoSeachPostData!
var videoposts = [VideoSeachPostData]()
var statuspost : StatusSearchPostData!
var statusposts = [StatusSearchPostData]()
var penpalpost : PenpalSearchPostData!
var penpalposts = [PenpalSearchPostData]()
var tablearray : NSArray = []
typealias DownloadComplete = () -> ()
#IBOutlet weak var searchTable: UITableView!
#IBOutlet weak var searchBar: UISearchBar!
#IBOutlet weak var searchTypeSegmentControl: UISegmentedControl!
override func viewDidLoad() {
super.viewDidLoad()
searchTable.dataSource = self
searchTable.delegate = self
searchBar.delegate = self
searchPassed()
}
#IBAction func onChangeSegment(_ sender: UISegmentedControl)
{
self.searchTable.reloadData()
}
func searchBarSearchButtonClicked(_ searchBar: UISearchBar) {
view.endEditing(true)
}
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
if searchBar.text == nil || searchBar.text == "" {
searchTable.reloadData()
view.endEditing(true)
} else {
searchPassed()
searchTable.reloadData()
}
}
func searchPassed()
{
let searchText = "Postpositives"
print(searchText)
var request = URLRequest(url: URL(string: "https://www.example.com/search")!)
request.httpMethod = "GET"
let postString = "q=\(searchText)"
request.httpBody = postString.data(using: .utf8)
let task = URLSession.shared.dataTask(with: request) { data, response, error in
guard let data = data, error == nil else { // check for fundamental networking error
print("error=\(String(describing: error))")
print("cant run")
return
}
if let httpStatus = response as? HTTPURLResponse, httpStatus.statusCode != 200 { // check for http errors
print("statusCode should be 200, but is \(httpStatus.statusCode)")
print("response = \(String(describing: response))")
print("\(searchText)")
}
else {
let responseString = String(data: data, encoding: .utf8)
print("responseString = \(String(describing: responseString))")
// func downloadPostData(completed: #escaping DownloadComplete) {
Alamofire.request("https://www.example.com/api/search?q=\(searchText)").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 mediatype = dict["media_type"] as! String?
if mediatype == "image"
{
let imagepost = ImageSeachPostData(postDict: obj)
self.imageposts.append(imagepost)
}
else if mediatype == "video"
{
let videopost = VideoSeachPostData(postDict: obj)
self.videoposts.append(videopost)
}
else if mediatype == "null"
{
let statuspost = StatusSearchPostData(postDict: obj)
self.statusposts.append(statuspost)
}
let penpalpost = PenpalSearchPostData(postDict: obj)
self.penpalposts.append(penpalpost)
}
self.searchTable.reloadData()
}
}
}
}
}
}
}
}
task.resume()
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
let selectedIndex = self.searchTypeSegmentControl.selectedSegmentIndex
switch selectedIndex
{
case 0:
return penpalposts.count
case 1:
return statusposts.count
case 2:
return imageposts.count
case 3:
return videoposts.count
default:
return 0
}
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let selectedIndex = self.searchTypeSegmentControl.selectedSegmentIndex
switch selectedIndex
{
case 0:
return tableView.dequeueReusableCell(withIdentifier: "penpalSearchReuse", for: indexPath)
case 1:
return tableView.dequeueReusableCell(withIdentifier: "statusSearchReuse", for: indexPath)
case 2:
return tableView.dequeueReusableCell(withIdentifier: "imageSearchReuse", for: indexPath)
case 3:
return tableView.dequeueReusableCell(withIdentifier: "videoSearchReuse", for: indexPath)
default:
return UITableViewCell()
}
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 420
}
}

Answer 1

Use selectedSegmentIndex property of UISegmentedControl to handle the UITableViewDataSource according to the selected segment.
Example:
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
let selectedIndex = self.segmentedControl.selectedSegmentIndex
switch selectedIndex
{
case 0:
return peopleArray.count
case 1:
return imagesArray.count
//Add other cases here
default:
return 0
}
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
let selectedIndex = self.segmentedControl.selectedSegmentIndex
switch selectedIndex
{
case 0:
return tableView.dequeueReusableCell(withIdentifier: "peopleCell", for: indexPath) //Do your custom handling whatever required.
case 1:
return tableView.dequeueReusableCell(withIdentifier: "imageCell", for: indexPath)
//Add other cases here
default:
return UITableViewCell()
}
}
#IBAction func onChangeSegment(_ sender: UISegmentedControl)
{
self.tableView.reloadData()
}

Answer 2

Pretty simple Make a table array i.e common data source for tableView and create 4 array in which actual data is there. Now on each segment tap call like
On Tap of 1st Segment
tableArray = segment_1_Array
tableView.reloadData()
On Tap of 2nd Segment
tableArray = segment_2_Array
tableView.reloadData()
and so on..
In cellForRow Delegate Method there will be switch statement
let modelObj = tableArray[indexpath.row]
let cellID = ""
switch modelObj {
case _ as CellModelType1 : cellID = "CellType1Identifier"
case _ as CellModelType2 : cellID = "CellType2Identifier"
case _ as CellModelType3 : cellID = "CellType3Identifier"
case _ as CellModelType4 : cellID = "CellType4Identifier"
}
let cell = tableView.dequeueReusableCell(withIdentifier: cellID) as! TableCell
return cell
NOTE
1. TableCell will be the SuperClass and all 4 cells will be child class if this class
2. CellModelType1, CellModelType2, CellModelType3, CellModelType4
are different cell Models for example it can be
PeopleCellModel , PostsCellModel, ImagesCellModel and VideoCellModel
Hence you don't have to manage number of rows
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return tableArray.count
}

Answer 3

You could use a construct like this:
let people = ["pe1", "pe2", "pe3"]
let post = ["po1", "po2", "po3"]
let images = ["im1", "im2", "im3"]
let video = ["vi1", "vi2", "vi3"]
var selectedDataSource: [String] {
switch segmentedControl.selectedSegmentIndex {
case 0: return people
case 1: return post
case 2: return images
case 3: return video
default: return []
}
}
Then you can use selectedDataSource in all your tableview datasource methods. Of course you have to reload the tableview when the user changes the selection.

Answer 4

You will need to create a IBAction that will be fired on valueChanged event:
#IBAction func segmentChange(_ sender: UISegmentedControl) {
var nibToLoad = UINib()
switch sender.selectedSegmentIndex {
case 0:
nibToLoad = UINib(nibName: "peopleNib", bundle: Bundle.main)
tableViewDataSourceArray = PeopleArray
case 1:
nibToLoad = UINib(nibName: "postNib", bundle: Bundle.main)
tableViewDataSourceArray = PostArray
case 2:
nibToLoad = UINib(nibName: "imageNib", bundle: Bundle.main)
tableViewDataSourceArray = ImageArray
case 3:
nibToLoad = UINib(nibName: "videoNib", bundle: Bundle.main)
tableViewDataSourceArray = VideoArray
default:
//default action
}
tableView.register(nibToLoad, forCellReuseIdentifier: "identifier")
tableView.reloadData()
}
You would then make sure all of your UITableViewDelegate and UITableViewDataSource methods are using your tableViewDataSourceArray (whatever you are calling that variable).