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March 1, 2017 20:19
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Easy way to make data in UITableView searchable
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| class DataViewController: UITableViewController, UISearchResultsUpdating { | |
| var data = [Data]() | |
| var filteredData = [Data]() | |
| @available(iOS 8.0, *) | |
| public func updateSearchResults(for searchController: UISearchController) { | |
| let query = searchController.searchBar.text! | |
| filteredData = data.filter { element in | |
| element.lowercased().contains(query.lowercased()) | |
| } | |
| tableView.reloadData() | |
| } | |
| override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell { | |
| let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) | |
| let current: Data | |
| if searchController.isActive && searchController.searchBar.text != "" { | |
| current = filteredData[indexPath.row] | |
| } else { | |
| current = data[indexPath.row] | |
| } | |
| // … | |
| return cell | |
| } | |
| override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int { | |
| if searchController.isActive && searchController.searchBar.text != "" { | |
| return filteredData.count | |
| } | |
| return data.count | |
| } | |
| override func viewDidLoad() { | |
| super.viewDidLoad() | |
| searchController.searchResultsUpdater = self | |
| searchController.dimsBackgroundDuringPresentation = false | |
| definesPresentationContext = true | |
| tableView.tableHeaderView = searchController.searchBar | |
| } | |
| } |
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