I added UISearchController programmatically with code
let searchController = UISearchController(searchResultsController: nil)
override func viewDidLoad() {
super.viewDidLoad()
searchController.searchResultsUpdater = self
searchController.obscuresBackgroundDuringPresentation = false
searchController.searchBar.placeholder = "Введіть значення для пошуку"
searchController.searchBar.backgroundColor = .white
navigationItem.searchController = searchController
definesPresentationContext = true
}
But it seems that it is not centered vertically. How can I fix it?
Connected SearchController to TableView instead of NavigationItem
tableView.tableHeaderView = searchController.searchBar
It seems like a bug in iOS. For some reason at least on iOS 15 searchbar textfield frame has initial value of y = 1 but after you click on the field and then leave this field it will go to y = 8. Fixing the initial frame manually in viewDidLayoutSubviews solved this problem in my case:
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
searchController.searchBar.searchTextField.frame.origin.y = 8
}
Related
I have implemented searchBar using UISearchController using following code -
var searchController = UISearchController(searchResultsController: nil)
searchController.searchResultsUpdater = self
searchController.obscuresBackgroundDuringPresentation = false
searchController.searchBar.placeholder = "Search here..."
definesPresentationContext = true
searchController.searchBar.delegate = self
searchController.searchBar.sizeToFit()
if #available(iOS 11.0, *) {
self.navigationItem.searchController = searchController
} else {
// Fallback on earlier versions
navigationItem.titleView = searchController.searchBar
navigationItem.titleView?.layoutSubviews()
}
Now I have two issues-
SearchBar comes below the navigationBar(See the image attached), how do I get the searchBar on top of NavigationBar that used to come when we implement searchBar with UISearch bar.
The cancel button is not coming on the right side of search bar.
I don't think you can do this natively. But you can activate the search bar when you open the menu (dont forget to set searchController.hidesNavigationBarDuringPresentation to true):
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
searchController.isActive = true
}
But it will hide the UINavigationBar so this is not what you really want. So, maybe better, you can create a custom navigation bar and hide the native one. Here is a quick example:
1 - Create a swift a xib file NavigationBarView with an horizontal UIStackView, a back UIButton with a fixed width and a UISearchBar:
class NavigationBarView: UIView {
var backAction: (()->Void)?
#IBOutlet weak var searchBarView: UISearchBar!
override func awakeFromNib() {
super.awakeFromNib()
// Customize your search bar
self.searchBarView.showsCancelButton = true
}
#IBAction func backButtonPressed(_ sender: Any) {
self.backAction?()
}
}
2 - Instead of using a UITableViewController, create a UIViewController with a vertical UIStackView which contains a view with a fixed height of 64 and a UITableView:
class TableViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, UISearchBarDelegate {
#IBOutlet weak var tableView: UITableView!
#IBOutlet weak var containerView: UIView!
let navigationBarView: NavigationBarView = NavigationBarView.viewFromNib() // Custom helper to instantiate a view, see below
override func viewDidLoad() {
super.viewDidLoad()
self.navigationController?.navigationBar.isHidden = true // hide the native UINavigationBar
self.navigationBarView.backAction = {
self.navigationController?.popViewController(animated: true)
}
self.navigationBarView.searchBarView.delegate = self
self.navigationBarView.add(in: self.containerView) // Custom helper to put a view in a container view, see below
// Other stuff
self.tableView.register(UITableViewCell.self, forCellReuseIdentifier: "Cell")
}
Here is my helpers:
extension UIView {
static public func viewFromNib <GenericView: UIView> () -> GenericView {
let className = String(describing: self)
guard let instance = UINib(nibName: className, bundle: nil)
.instantiate(withOwner: nil, options: nil).first as? GenericView else {
// If this happens, it means the xcodeproj is broken
fatalError("Ho no its broken!")
}
return instance
}
func add(in superView: UIView) {
self.translatesAutoresizingMaskIntoConstraints = false
superView.addSubview(self)
self.topAnchor.constraint(equalTo: superView.topAnchor).isActive = true
self.bottomAnchor.constraint(equalTo: superView.bottomAnchor).isActive = true
self.leftAnchor.constraint(equalTo: superView.leftAnchor).isActive = true
self.rightAnchor.constraint(equalTo: superView.rightAnchor).isActive = true
}
}
Yo can try below code and please let me know if you are facing any issue.
if self.searchController != nil {
self.searchController.isActive = false
}
isSearching = true
self.searchController = UISearchController(searchResultsController: nil)
self.searchController.searchResultsUpdater = self
self.searchController.delegate = self
self.searchController.searchBar.delegate = self
self.searchController.hidesNavigationBarDuringPresentation = false
self.searchController.dimsBackgroundDuringPresentation = false
self.navigationItem.titleView = searchController.searchBar
self.definesPresentationContext = false
self.searchController.searchBar.returnKeyType = .done
There is a property for this
searchController.hidesNavigationBarDuringPresentation = true
There is a gap, so it might be a white text Canel button. ou can know it for sure in Debugger Navigator (Cmd+7) -> View UI Hierarcy. White button text might be caused by custom navigation bar style
I am working on Swift 3.1, I want a simple search functionality where the search results will show in a popOver manner below the search bar. This is a native offering and should be available using UISearchController. But even after my repeated trials, I could not achieve this. Am I missing something?
I have mentioned the resultsController. Implemented the required delegates and even the data us fed to it. But still its not shown.
Any help will be greatly appreciated. Thanks.
Code:
func initiateView() {
resultsController = ResultsController()
resultsController.table.dataSource = self
searchController = UISearchController.init(searchResultsController: resultsController)
self.view.addSubview(searchController.searchBar)
searchController.searchResultsUpdater = self
searchController.delegate = self
searchController.dimsBackgroundDuringPresentation = false // default is YES
searchController.searchBar.delegate = self // so we can monitor text changes + others
definesPresentationContext = true
feedTable = UITableView()
feedTable.delegate = self
feedTable.dataSource = self
feedTable.separatorStyle = .singleLineEtched
feedTable.register(UITableViewCell.self, forCellReuseIdentifier: "SomeCell")
self.view.addSubview(feedTable)
feedTable.pinToSuperview([.Left, .Right, .Bottom])
feedTable.pinToSuperviewTop(withInset: 50, priority: 100)
}
func updateSearchResults(for searchController: UISearchController)
{
if let searchString = searchController.searchBar.text{
let resultsController = searchController.searchResultsController as! ResultsController
resultsController.resultsArray = feedArray.filter({$0 .contains(searchString)})
resultsController.table.reloadData()
}
}
I have researched this problem a lot but I have found no solution that would work for me.
Basically, I have a UIViewController that presents UISearchController like this:
let searchController = UISearchController(searchResultsController: nil)
searchController.searchResultsUpdater = self
searchController.delegate = self
searchController.dimsBackgroundDuringPresentation = false
searchController.searchBar.delegate = self
view.addSubview(searchController.searchBar)
User is then expected to tap the UISearchBar to present searchController and reveal the keyboard. However, a strange thing happens during the transition between controllers.
It seems as if the UISearchController didn't cover the status bar and let you see the UIViewController that presented it below. I would like to find a way to prevent this, i.e. to force the search controller to extend all the way under the status bar.
Things that I have already done:
I have set self.definesPresentationContext = true in viewDidLoad:.
I have found out that this is a known bug, namely rdar://20942583.
I have attempted to circumvent the bug by setting:
self.edgesForExtendedLayout = .All
self.extendedLayoutIncludesOpaqueBars = true
It didn't work.
I'm running out of ideas. Please help.
Thanks a bunch,
Pete.
Facing the same issue and tried everything from here and here and none of this worked for me :(
Best workaround that is working (ugly I know) until I find a better solution:
override func viewDidLoad() {
super.viewDidLoad()
searchController.delegate = self
}
func willPresentSearchController(searchController: UISearchController) {
let statusHeight = UIApplication.sharedApplication().statusBarFrame.size.height
if bgBar == nil {
bgBar = UIView(frame: CGRectMake(0, 0, view.frame.width, (navigationController?.navigationBar.frame.height)! + statusHeight))
bgBar.backgroundColor = UIColor.redColor()
view.addSubview(bgBar)
} else {
bgBar.hidden = false
}
tableView.contentInset.top = statusHeight
}
func willDismissSearchController(searchController: UISearchController) {
bgBar.hidden = true
tableView.contentInset.top = 0
}
On swift 4:
viewWillAppear(_ animated: Bool) {
let statusHeight = UIApplication.shared.statusBarFrame.size.height
let sbview = UIView(frame: CGRect(x: 0, y: 0, width: view.frame.width, height: statusHeight))
sbview.backgroundColor = .white
view.addSubview(sbview)
{
I would like uisearchcontroller to start searching after I type at least three characters in search bar. So, what should I do for that ?
func configureSearchController() {
// Initialize and perform a minimum configuration to the search controller.
searchController = UISearchController(searchResultsController: nil)
searchController.searchResultsUpdater = self
searchController.dimsBackgroundDuringPresentation = false
searchController.searchBar.placeholder = "Search"
searchController.searchBar.delegate = self
searchController.searchBar.sizeToFit()
let textFieldInsideSearchBar = searchController.searchBar.valueForKey("searchField") as! UITextField
textFieldInsideSearchBar.font = UIFont(name: "Bauhaus", size: 19)
searchController.searchBar.setImage(UIImage(named: "searchikon"), forSearchBarIcon: UISearchBarIcon.Search, state: UIControlState.Normal);
// Place the search bar view to the tableview headerview.
TableView.tableHeaderView = searchController.searchBar
All you need to is add the single required method for the UISearchController.
func updateSearchResultsForSearchController(searchController: UISearchController) {
if searchController.searchBar.text?.characters.count > 2 {
// Filter your search results here
}
}
You will want to check the the length of the characters in an event which checks the change in the text field:
nameOfString.characters.count
So I've tried everything trying to get a search bar into the navigation bar in Swift. But sadly I haven't gotten it working, just yet...
For those of you who don't know what I'm talking about, I'm trying to do something like this
Note the search bar in the navigation bar. So here's what I'm currently using
self.searchDisplayController?.displaysSearchBarInNavigationBar = true
I popped that in my viewDidLoad, and then when I load up the app I'm presented with, just an empty navigation bar.... :( Any ideas?
Try this
let leftNavBarButton = UIBarButtonItem(customView:Yoursearchbar)
self.navigationItem.leftBarButtonItem = leftNavBarButton
Update
You keep a lazy UISearchBar property
lazy var searchBar:UISearchBar = UISearchBar(frame: CGRectMake(0, 0, 200, 20))
In viewDidLoad
searchBar.placeholder = "Your placeholder"
var leftNavBarButton = UIBarButtonItem(customView:searchBar)
self.navigationItem.leftBarButtonItem = leftNavBarButton
If you want to use storyboard
just drag your searchbar as a outlet,then replace the lazy property with your outlet searchbar
// create the search bar programatically since you won't be
// able to drag one onto the navigation bar
searchBar = UISearchBar()
searchBar.sizeToFit()
// the UIViewController comes with a navigationItem property
// this will automatically be initialized for you if when the
// view controller is added to a navigation controller's stack
// you just need to set the titleView to be the search bar
navigationItem.titleView = searchBar
Swift 5, XCode 11, Storyboard way so you can easily add all the search bar attributes through the storyboard and you have less code in your view controller class.
1.) Add your search bar view as external view in viewcontroller.
2.) Connect searchBarView to you viewcontroller.
3.) Add your searchBarView to your navigationBar title item.
navigationItem.titleView = searchBarView
Result:
In your view controller:
lazy var searchBar = UISearchBar(frame: CGRectZero)
override func viewDidLoad() {
super.viewDidLoad()
searchBar.placeholder = "Search"
navigationItem.titleView = searchBar
}
Doing it this way, by setting the navigationItem.titleView, the search bar is automatically centered across the iPhone and iPad devices. Note: only tested with v8.4 and v9.0
for SWIFT 3
lazy var searchBar = UISearchBar(frame: CGRect.zero)
In 2019, you should use UISearchController.
override func viewDidLoad() {
super.viewDidLoad()
let searchController = UISearchController(searchResultsController: nil)
searchController.searchResultsUpdater = self.viewModel
searchController.obscuresBackgroundDuringPresentation = false
searchController.searchBar.placeholder = "Search artists"
self.navigationItem.searchController = searchController
self.definesPresentationContext = true
}
And some class should conform to UISearchResultsUpdating. I usually add this as extension to my ViewModel.
extension ArtistSearchViewModel: UISearchResultsUpdating {
func updateSearchResults(for searchController: UISearchController) {
print("Searching with: " + (searchController.searchBar.text ?? ""))
let searchText = (searchController.searchBar.text ?? "")
self.currentSearchText = searchText
search()
}
}
This will spawn something like this:
For iOS 11 and above
navigationItem.searchController = searchController
For iOS 10 and below
navigationItem.titleView = searchController.searchBar;
or you can assign it as leftBarButtonItem as described in this answer
For Swift 5 or letter
also, you can use this code. Fully Programmatically
import UIKit
class SearchTableViewController: UITableViewController {
private lazy var searchController: UISearchController = {
let sc = UISearchController(searchResultsController: nil)
sc.searchResultsUpdater = self
sc.delegate = self
sc.obscuresBackgroundDuringPresentation = false
sc.searchBar.placeholder = "Enter A Compiny Name Or Symbole"
sc.searchBar.autocapitalizationType = .allCharacters
return sc
}()
override func viewDidLoad() {
super.viewDidLoad()
setupNavigationBar()
}
private func setupNavigationBar() {
navigationItem.searchController = searchController
}
}
// MARK: - UISearchResult Updating and UISearchControllerDelegate Extension
extension SearchTableViewController: UISearchResultsUpdating, UISearchControllerDelegate {
func updateSearchResults(for searchController: UISearchController) {
}
}
let searchBar = UISearchBar()
searchBar.sizeToFit()
searchBar.placeholder = ""
self.navigationController?.navigationBar.topItem?.titleView = searchBar
func searchBarSearchButtonClicked(_ searchBar: UISearchBar) {
searchBar.endEditing(true)
searchBar.text = nil
print("## search btn clicked : \(searchBar.text ?? "")")
}
Setting SearchBar as titleView, changes height of navigationBar to 56. To fix this, you can embed searchBar in view and set that as titleView.
var offset: CGFloat = 20
// If VC is pushed, back button should be visible
if navigationController?.navigationBar.backItem != nil {
offset = 40
}
let customFrame = CGRect(x: 0, y: 0, width: view.frame.size.width - offset, height: 44.0)
let searchBarContainer = UIView(frame: customFrame)
searchBar = UISearchBar(frame: customFrame)
searchBarContainer.addSubview(searchBar)
navigationItem.titleView = searchBarContainer