I'm trying to add a search bar to a view, but I've tried it a thousand ways and the searchbar delegate does not work.
class SearchTableViewController: UITableViewController, UISearchBarDelegate{
override func viewDidLoad() {
super.viewDidLoad()
let searchController = UISearchController(searchResultsController: nil)
searchController.dimsBackgroundDuringPresentation = true
searchController.obscuresBackgroundDuringPresentation = true
self.definesPresentationContext = true
searchController.searchBar.delegate = self
self.tableView.tableHeaderView = searchController.searchBar
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = false
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem()
}
I ran into the same problem.
The issue you are having is that UITableViewController has a big restriction: its main view must be a UITableView that takes up the entire screen space (except for a possible navigation bar at the top, and a toolbar or tab bar at the bottom).
If your screen consists of just a UITableView, then it makes sense to use it. However, since you are adding a search bar, you must use a UIViewController and add a UITableView to it. Then you can add the search bar as you like.
Related
Left side displays my app in the iPhone 7 simulator. Right side is the app as displayed in my device. When tapping in the search bar, the navbar sildes up but then slides back down as showing in the image with the "What is this?" text.
The code for my search controller is as follows and it is being called in viewDidLoad.
//MARK: - Search Controller
func configureSearchController() {
searchController.dimsBackgroundDuringPresentation = false
definesPresentationContext = true
// to receive updates
searchController.searchResultsUpdater = self
// Set up searchbar of search controller
searchController.searchBar.scopeButtonTitles = ["All", "Something", "Something"]
searchController.searchBar.delegate = self
// add the searchbar to the tableview
tableView.tableHeaderView = searchController.searchBar
// hack to fix ocassional bugs
searchController.searchBar.sizeToFit()
}
I'm trying to keep the search bar in view as the table scrolls. At the moment I'm placing it as the header in a tableview, and it works as it should, but of course the search bar scrolls off screen as you go down the table. I thought I could do this simply modifying this code sample:
How do I use UISearchController in iOS 8 where the UISearchBar is in my navigation bar and has scope buttons?
searchController = UISearchController(searchResultsController: nil)
searchController.searchResultsUpdater = self
searchController.delegate = self
searchController.searchBar.delegate = self
searchController.dimsBackgroundDuringPresentation = false
searchController.hidesNavigationBarDuringPresentation = false
tableview.tableHeaderView = searchContoller.searchBar // How to put it elsewhere?
//Alternative that also works
navigationItem.titleView = searchController.searchBar
The idea was to take some other view and do
otherview = searchController.searchBar
For instance an outlet to a UISearchBar, or a blank UIView, or something like that.
But it doesn't show the searchBar if I do that. It seems to only work as the header view of a table or as a navigationItem.titleView.
Am I missing something?
If you have a blank UIView that is placed above the tableview.
let's assume you have an outlet to that blank UIView called searchContainer.
Then you can add the search bar of the UISearchController to that view by adding the following line
searchContainer.addSubview(searchController.searchBar)
I AM NOT USING STORYBOARD SEGUES.
When I use UISearchController to have a search bar at the top of my table view, I get extremely strange behavior. Is there documentation on how I'm supposed to handle the search bar when a view dismisses? When I switch to a new view controller via an animation or push one on a nav stack, the bar is stuck in its spot until I hit the "Cancel" button.
See a video of what's happening in this short clip:
https://www.youtube.com/watch?v=6G7xFMENm_o&feature=youtu.be
This is the code, in the view controller, that sets up search bar:
var s: UISearchController!
private func configureSearching() {
s = UISearchController(searchResultsController: nil)
s.searchResultsUpdater = self
s.dimsBackgroundDuringPresentation = false
s.searchBar.searchBarStyle = .Minimal
s.hidesNavigationBarDuringPresentation = false
tableView.tableHeaderView = s.searchBar
s.searchBar.sizeToFit()
}
you should add the following line in viewDidLoad
self.definesPresentationContext = true
I'm trying out UISearchController for iOS 8 right now. When I click the cell, it will push the segue and show another view controller. However, the search controller/bar is still there on the next controller. Also, I notice that the status bar background is white, while it should be grey as the searchBar background color is grey. Is there anything that I miss?
This is the codes that I used to initialise the search controller
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
searchController = UISearchController(searchResultsController: nil)
searchController.searchResultsUpdater = self
searchController.hidesNavigationBarDuringPresentation = false
searchController.dimsBackgroundDuringPresentation = false
searchController.searchBar.sizeToFit()
tableView.tableHeaderView = searchController.searchBar
}
Screenshot:
Manual stop UISearchController in prepareForSegue
searchController.active = false
Or add this in viewDidLoad
searchController.definesPresentationContext = true
I am relatively new to iOS (100 hours or so) and I am trying to implement a UISearchController without a storyboard. Is it possible to do this programmatically?
You have to implement UISearchController programmatically since Apple hasn't provided the ability to set it up using Storyboard yet.
Here are the steps to implement UISearchController in a view controller
Conform to UISearchResultsUpdating Protocol
Create a variable to reference the UISearchController
var searchController: UISearchController!
Set searchController in viewDidLoad(_:)
override func viewDidLoad() {
super.viewDidLoad()
searchController = UISearchController(searchResultsController: nil)
// The object responsible for updating the contents of the search results controller.
searchController.searchResultsUpdater = self
// Determines whether the underlying content is dimmed during a search.
// if we are presenting the display results in the same view, this should be false
searchController.dimsBackgroundDuringPresentation = false
// Make sure the that the search bar is visible within the navigation bar.
searchController.searchBar.sizeToFit()
// Include the search controller's search bar within the table's header view.
tableView.tableHeaderView = searchController.searchBar
definesPresentationContext = true
}
Implement the method updateSearchResultsForSearchController(_:), which is called when the search bar becomes the first responder or when the user makes changes to the text inside the search bar
func updateSearchResultsForSearchController(searchController: UISearchController) {
// No need to update anything if we're being dismissed.
if !searchController.active {
return
}
// you can access the text in the search bar as below
filterString = searchController.searchBar.text
// write some code to filter the data provided to your tableview
}