Implement UISearchController with UITableView

Question

Just wondering about the code that was used for the Raywenderlich Tutorial on how to add a UISearchController and how to use it with a UITableViewController I can't seem to get it working and someone told me that it may have got deprecated in iOS 8.0, does anyone know on how to still do this?

The UISearchController was Built In The UIViewController NOT StoryBoard!

Answer 1

UISearchDisplayController has been deprecated and replaced by UISearchController.And it is available in iOS 8.0 and later.

The UISearchController class defines an interface that manages the presentation of a search bar in concert with the search results controller’s content. The search results controller, a UIViewController object specified by the searchResultsController property, manages the results of the search

https://developer.apple.com/library/prerelease/ios/documentation/UIKit/Reference/UISearchController/index.html

Here is an example ,how i do it with UITableView resding in UIViewController..Just make few changes if you want to use with UITableViewController...

import UIKit

class ViewController: UIViewController , UITableViewDataSource, UITableViewDelegate,UISearchResultsUpdating {


    @IBOutlet weak var tblView: UITableView!

    var tabledata = ["lucques","chickendijon","godaddy","amazon","chris","ambata","bankofamerica","abelcine","AUTO + TRANSPORTATION","BILLS + UTILITIES","FOOD + DINING","HEALTH","AutoCare", "Auto Payment" , "Gas+Fuel","Electric Bill", "Internet/Television","Fast Foodd", "Gorceries" , "Restaurants","Gym Membership", "Health Insurance","auto","note-bullet","knife","heart"]

    var filteredTableData = [String]()

    var resultSearchController = UISearchController()



    override func viewDidLoad() {
        super.viewDidLoad()

        tblView.delegate = self
        tblView.dataSource = self

        self.resultSearchController = ({

            let controller = UISearchController(searchResultsController: nil)
            controller.searchResultsUpdater = self
            controller.dimsBackgroundDuringPresentation = false
            controller.searchBar.sizeToFit()
            controller.searchBar.barStyle = UIBarStyle.Black
            controller.searchBar.barTintColor = UIColor.whiteColor()
            controller.searchBar.backgroundColor = UIColor.clearColor()
            self.tblView.tableHeaderView = controller.searchBar


            return controller


        })()
        self.tblView.reloadData()

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


     func numberOfSectionsInTableView(tableView: UITableView) -> Int {

        return 1

    }



     func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

        if self.resultSearchController.active {


           return self.filteredTableData.count

        }else{


            return self.tabledata.count



        }

    }



     func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

        var section = indexPath.section
        var row = indexPath.row
        let cell: UITableViewCell = UITableViewCell(style: UITableViewCellStyle.Default, reuseIdentifier:"addCategoryCell")
        cell.selectionStyle =  UITableViewCellSelectionStyle.None
        cell.backgroundColor = UIColor.clearColor()
        cell.contentView.backgroundColor = UIColor.clearColor()
        cell.textLabel?.textAlignment = NSTextAlignment.Left
        cell.textLabel?.textColor = UIColor.blackColor()
        cell.textLabel?.font = UIFont.systemFontOfSize(14.0)

        if self.resultSearchController.active {

              cell.textLabel?.text = filteredTableData[indexPath.row]


        }else{

                 cell.textLabel?.text = tabledata[indexPath.row]

        }

        return cell

    }


    func updateSearchResultsForSearchController(searchController: UISearchController) {

        filteredTableData.removeAll(keepCapacity: false)

        let searchPredicate = NSPredicate(format: "SELF CONTAINS[c] %@", searchController.searchBar.text)

        let array = (tabledata as NSArray).filteredArrayUsingPredicate(searchPredicate)
        filteredTableData = array as! [String]

        self.tblView.reloadData()



    }



}