selecting cell in tableview while UISearchController is active, doesnt present next view? - ios

Question

I have made a tableview where you can select a cell, and then the viewcontroller will perform a segue to the next view, which works perfectly fine when you are not using the searchcontroller.
Then when you are using the searchcontroller, it filters the tableview as it should, and the segue is called in didSelectRowAtIndexPath, and the prepareForSegue is called. The problem then is that the view it should segue to is not presented? I can see that the code in the class connected to the view is running, so the segue is performed, it is just the view that does not follow. What am i missing
class CompanyListViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, UISearchResultsUpdating {
#IBOutlet weak var tableView: UITableView!
let objectMapper = AWSDynamoDBObjectMapper.defaultDynamoDBObjectMapper()
var activityIndicatorView: SWActivityIndicatorView!
var resultSearchController: UISearchController!
var allCompanies: [Company] = []
var filteredCompanies = [Company]()
override func viewDidLoad() {
super.viewDidLoad()
// set delegates
tableView.delegate = self
tableView.dataSource = self
configureSearchController()
// initialize activity indicator view
self.activityIndicatorView = SWActivityIndicatorView(frame: CGRect(x: 0, y: 0, width: 30, height: 30))
activityIndicatorView.hidesWhenStopped = true
activityIndicatorView.color = UIColor.lightGrayColor()
self.view.addSubview(activityIndicatorView)
self.activityIndicatorView.center = self.view.center
activityIndicatorView.startAnimating()
// fetch all records from backend
fetchAllRecords({(errors: [NSError]?) -> Void in if errors != nil {print(errors)}})
}
func configureSearchController() {
// Initialize and perform a minimum configuration to the search controller.
// Search Bar
self.resultSearchController = UISearchController(searchResultsController: nil)
self.resultSearchController?.searchBar.autocapitalizationType = .None
self.tableView.tableHeaderView = self.resultSearchController?.searchBar
resultSearchController?.dimsBackgroundDuringPresentation = false
self.resultSearchController?.searchResultsUpdater = self
definesPresentationContext = true
}
// search delegate method
func updateSearchResultsForSearchController(searchController: UISearchController) {
self.filterContentForSearchText(searchController.searchBar.text!)
}
// Filter method, which filters by companyName, and reloads tableview
func filterContentForSearchText(searchText: String, scope: String = "All") {
filteredCompanies = allCompanies.filter { company in
return company._companyName!.lowercaseString.containsString(searchText.lowercaseString)
}
tableView.reloadData()
}
// fetch all records from backend
func fetchAllRecords(completionHandler: (errors: [NSError]?) -> Void) {
let scanExpression = AWSDynamoDBScanExpression()
objectMapper.scan(Company.self, expression: scanExpression) { (response: AWSDynamoDBPaginatedOutput?, error: NSError?) in
dispatch_async(dispatch_get_main_queue(), {
// if error
if let error = error {
completionHandler(errors: [error]);
}
//if success
else {
self.allCompanies = response!.items as! [Company]
self.tableView.reloadData()
self.activityIndicatorView.stopAnimating()
}
})
}
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if resultSearchController.active && resultSearchController.searchBar.text != "" {
return filteredCompanies.count
}
return allCompanies.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
// create a new cell if needed or reuse an old one
let cell:CompanyListTableViewCell = self.tableView.dequeueReusableCellWithIdentifier("companyCell") as! CompanyListTableViewCell
// set the text from the data model
let company:Company?
if resultSearchController.active && resultSearchController.searchBar.text != "" {
company = self.filteredCompanies[indexPath.row]
} else {
company = self.allCompanies[indexPath.row]
}
cell.titleLabel.text = company!._companyName
cell.imageview?.image = UIImage(named: "placeholder")
return cell
}
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
self.performSegueWithIdentifier("segueToProfile", sender: self)
}
// send selected company with segue to profile
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if(segue.identifier == "segueToProfile"){
let indexPath = tableView.indexPathForSelectedRow
//tableView.deselectRowAtIndexPath(indexPath!, animated: true)
let selectedRow = indexPath!.row
let profileVC = segue.destinationViewController as! ProfileViewController
if resultSearchController.active{
print(filteredCompanies[selectedRow])
profileVC.company = filteredCompanies[selectedRow]
} else {
profileVC.company = allCompanies[selectedRow]
}
}
}
}
The console is saying this, but i dont know if that has anything to do with this?
2016-11-26 15:54:07.300 Lostandfound[949:2474251] Warning: Attempt to present on which is already presenting

Answer 1

Here is the example of TableView with SearchBar control.You should remove didSelectRowAtIndexPath method and use prepareForSegue method for Determine the selected row in TableView.Like this...
Example:
import UIKit
class ViewController: UIViewController,UITableViewDelegate,UITableViewDataSource,UISearchBarDelegate
{
#IBOutlet weak var SerchBar: UISearchBar!
#IBOutlet weak var TableView: UITableView!
var searchActive : Bool = false
var data = ["San Francisco","New York","San Jose","Chicago","Los Angeles","Austin","Seattle"]
var filtered:[String] = []
override func viewDidLoad()
{
super.viewDidLoad()
}
private func numberOfSectionsInTableView(tableView: UITableView) -> Int
{
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
if(searchActive)
{
return filtered.count
}
return data.count;
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
let cell = self.TableView.dequeueReusableCell(withIdentifier: "Cell") as! TableViewCell
if(searchActive)
{
cell.Label.text = filtered[indexPath.row]
}
else
{
cell.Label.text = data[indexPath.row]
}
return cell
}
override func prepare(for segue: UIStoryboardSegue, sender: Any!)
{
if let cell = sender as? TableViewCell
{
let i = TableView.indexPath(for: cell)!.row
if segue.identifier == "segue1"
{
if(searchActive)
{
let name1 = segue.destination as! SecondView
name1.str = self.filtered[i]
}
else
{
let name1 = segue.destination as! SecondView
name1.str = self.data[i]
}
}
}
}
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String)
{
filtered = data.filter({ (text) -> Bool in
let tmp: NSString = text as NSString
let range = tmp.range(of: searchText, options: .caseInsensitive)
return range.location != NSNotFound
})
if(filtered.count == 0)
{
searchActive = false;
}
else
{
searchActive = true;
}
self.TableView.reloadData()
}
func searchBarTextDidBeginEditing(_ searchBar: UISearchBar)
{
searchActive = true;
}
func searchBarTextDidEndEditing(_ searchBar: UISearchBar)
{
searchActive = false;
}
func searchBarCancelButtonClicked(_ searchBar: UISearchBar)
{
searchActive = false;
}
func searchBarSearchButtonClicked(_ searchBar: UISearchBar)
{
searchActive = false;
}
override func didReceiveMemoryWarning()
{
super.didReceiveMemoryWarning()
}
}
Your SecondView class is:
import UIKit
class SecondView: UIViewController
{
#IBOutlet weak var label: UILabel!
var str:String!
override func viewDidLoad()
{
super.viewDidLoad()
self.label.text = str
}
override func didReceiveMemoryWarning()
{
super.didReceiveMemoryWarning()
}
}
And your TableViewCell is:
import UIKit
class TableViewCell: UITableViewCell
{
#IBOutlet weak var Label: UILabel!
override func awakeFromNib()
{
super.awakeFromNib()
}
override func setSelected(_ selected: Bool, animated: Bool)
{
super.setSelected(selected, animated: animated)
}
}