I want to do sth. each time the cancel button is tapped inside the searchBar.
It is not working and not even calling the searchBarCancelButtonClicked method.
https://i.stack.imgur.com/Iho1V.png
class TableViewController: UITableViewController, UISearchBarDelegate {
#IBOutlet weak var searchbar: UISearchBar!
override func viewDidLoad() {
super.viewDidLoad()
searchbar.delegate = self
}
func searchBarCancelButtonClicked(_ searchBar: UISearchBar) {
print("Cancel Button Clicked")
}
}
Related
I implemented a UIRefreshControl on a TableView and additionally, I added a searchController with a searchBar.
The search as well as the pull to refresh work perfectly fine, the only thing I'm struggling with is how to deactivate the "pull to refresh" function when the searchController is active.
I tried implementing this solution, but somehow that did not work for me.
Make your viewcontroller conform the UISearchBarDelegate
class ViewController: UIViewController, UISearchBarDelegate
and implement two of its methods
func searchBarTextDidBeginEditing(_ searchBar: UISearchBar) {
self.removeRefreshControl()
}
func searchBarTextDidEndEditing(_ searchBar: UISearchBar) {
self.initRefreshControl()
}
In each method call the functions to set and remove the UIRefreshControl
func initRefreshControl() {
self.refreshControl = UIRefreshControl()
self.refreshControl?.addTarget(self, action: #selector(ViewController.refreshData), for: .valueChanged)
self.tableView.refreshControl = self.refreshControl
}
func removeRefreshControl() {
self.refreshControl = nil
}
The complete code is:
class ViewController: UIViewController, UISearchBarDelegate {
#IBOutlet weak var tableView: UITableView!
#IBOutlet weak var searchBar: UISearchBar!
var refreshControl: UIRefreshControl?
override func viewDidLoad() {
super.viewDidLoad()
self.initRefreshControl()
}
func searchBarTextDidBeginEditing(_ searchBar: UISearchBar) {
self.removeRefreshControl()
}
func searchBarTextDidEndEditing(_ searchBar: UISearchBar) {
self.initRefreshControl()
}
func initRefreshControl() {
self.refreshControl = UIRefreshControl()
self.refreshControl?.addTarget(self, action: #selector(ViewController.refreshData), for: .valueChanged)
self.tableView.refreshControl = self.refreshControl
}
func removeRefreshControl() {
self.refreshControl = nil
}
#objc func refreshData() {
....
....
self.refreshControl?.endRefreshing()
}
}
This should work.
My save button is hidden with the function saveBtnHidden() in the code below. However, the save button won't reappear when text is typed into the text field. I have tried multiple solutions similar to this. Every time that I type into the text field, the save button just won't show up.
import UIKit
class TableViewController: UITableViewController, UITextFieldDelegate {
#IBOutlet weak var saveBtn: UIButton!
#IBOutlet var nicknameField: UITextField!
override func viewDidLoad() {
super.viewDidLoad()
saveBtnHidden()
}
func saveBtnHidden() {
if (nicknameField.text?.isEmpty ?? true) {
// is empty
saveBtn.isHidden = true
} else {
saveBtn.isHidden = false
}
}
#IBAction func saveBtnPressed(_ sender: Any) {
performSegue(withIdentifier: "nextPage", sender: nil)
}
}
You are getting this error because your function saveBtnHidden() is only called once in viewDidLoad(). It does not get called again when the text in your text field changes. To detect when text changes, you will need to add a target to your text field that calls a function when it changes (.editingChanged) like this:
nicknameField.addTarget(self, action: #selector(textFieldDidChange(_:)), for: .editingChanged)
Then in the textFieldDidChange call your saveBtnHidden() function:
func textFieldDidChange(_ textField: UITextField) {
saveBtnHidden()
}
Code adapted from: How do I check when a UITextField changes?
Use delegate to be notify of any change. Delegates is a key part of iOS development and Apple's framework.
class TableViewController: UITableViewController, UITextFieldDelegate {
#IBOutlet weak var saveBtn: UIButton!
#IBOutlet var nicknameField: UITextField!
override func viewDidLoad() {
super.viewDidLoad()
saveBtnHidden()
nicknameField.delegate = self
}
func textFieldDidChange(_ textField: UITextField) {
saveBtnHidden()
}
// More of your source code below...
I'm developing note app, when the text view is empty the done button should be disabled so user could not be able to save empty notes into data base, else the button should be enabled.
here's my code below, my attempts have failed; how I can solve this problem?
#IBOutlet weak var textView: UITextView!
#IBOutlet weak var done: UIBarButtonItem!
override func viewDidLoad() {
super.viewDidLoad()
title = note?.text
if (self.textView.text.isEmpty){
done.enabled = false
}
if let noteContent = note
{
textView.text = noteContent.text
}
self.navigationController!.toolbarHidden = false;
}
func textViewShouldBeginEditing(textView: UITextView) -> Bool{
done.enabled = true
return done.enabled
}
Make your view controller conform to UITextViewDelegate protocol
In Interface Builder, connect the delegate on the text view to your view controller.
Add the following function to your view controller:
func textViewDidChange(textView: UITextView) {
if textView == self.textView {
self.doneButton.enabled = !textView.text.isEmpty
}
}
Try to use another delegate method for you're purpose. This is example :
import UIKit
class ViewController: UIViewController {
#IBOutlet weak var button: UIButton!
#IBOutlet weak var textView: UITextView!
override func viewDidLoad() {
super.viewDidLoad()
textView.delegate = self
if (textView.text.isEmpty) {
button.enabled = false
}
}
}
extension ViewController: UITextViewDelegate {
func textView(textView: UITextView, range: NSRange, replacementText text: String) -> Bool
{
if (!textView.text.isEmpty) {
button.enabled = true
} else {
button.enabled = false
}
return true
}
}
Try this in textViewDidChange method:
yourBarButtonItem.isEnabled = !(yourTextField.text?.isEmpty ?? false)
I try to make my searchbar on swift, but I have a problem to dismiss keyboard on screen when I pressed out of searchbar. When I try with textfield, it works perfectly fine with this code.
override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
self.view.endEditing(true)
}
It work when i press out of my textfield and then the keyboard is gone. I want to make like that with my searchbar, because when I use searchbar and use the same way like textfield, it doesn't work at all. Any reference or code is very useful for me.
try this :
self.mySearchController.searchBar.endEditing(true)
replace mySearchController with your created controller name..
If you did not create it programmatically but instead you just dragged a search bar from library then IBoutlet your searchable to your class and reference it as:
self.mySearchBar.endEditing(true)
I found it easier and simplier to use Table View for dismissal. (If you're using table view)
Swift 4:
self.tableView.keyboardDismissMode = .onDrag
Tested and working!
func searchBarSearchButtonClicked(searchBar: UISearchBar)
{
searchActive = false;
self.mySearchBar.endEditing(true)
}
Edit for Swift 4.2
func searchBarSearchButtonClicked(_ searchBar: UISearchBar)
{
searchActive = false
self.searchBar.endEditing(true)
}
func searchBarSearchButtonClicked(searchBar: UISearchBar) {
searchActive = false;
searchProject.resignFirstResponder()
}
This method will be invoked when user click search button on keyboard.So here we can dismiss keyboard.I think this is the right method.
Firstly, Apple's UISearchBarDelegate is the correct solution to hide keyboard when users click a search button while UISearchBar's instance is the first responder (learn UIResponder). In short, searchBarSearchButtonClicked(_:) is what you need for this task.
func searchBarSearchButtonClicked(_ searchBar: UISearchBar) {
searchBar.resignFirstResponder() // hides the keyboard.
doThingsForSearching()
}
If it doesn't work, check, does your controller conform to UISearchBarDelegate and secondly, does UISearchBarDelegate know about your class implementation (if you don't quite understand what am I talking about, you should learn delegation pattern starting to read here):
class YourAwesomeViewController: UIViewController, UISearchBarDelegate { // pay attention here
#IBOutlet weak var yourSearchBar: UISearchBar!
override func viewDidLoad() {
super.viewDidLoad()
self.yourSearchBar.delegate = self // and it's important too
}
}
Further, if you need to hide the keyboard touching outside of search bar without touching the search button (the user may change his mind to search something), UITapGestureRecognizer is a simple way too to deal with that.
Ctrl-drag a Tap Gesture Recognizer from the Object Library to your View Controller.
Ctrl-drag the recently added Tap Gesture Recognizer from the document outline in the storyboard to your class implementation as IBAction.
Finally, write a code:
#IBAction func tapToHideKeyboard(_ sender: UITapGestureRecognizer) {
self.yourSearchBar.resignFirstResponder()
}
Also, don't forget to create #IBOutlet for the search bar to have an access inside your class implementation.
Both variants above work well in my project.
Swift 4+:
You can try, creating a tap gesture and add in the self.view
let singleTapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(self.singleTap(sender:)))
singleTapGestureRecognizer.numberOfTapsRequired = 1
singleTapGestureRecognizer.isEnabled = true
singleTapGestureRecognizer.cancelsTouchesInView = false
self.view.addGestureRecognizer(singleTapGestureRecognizer)
and in selector func you call self.searchBar.resignFirstResponder
#objc func singleTap(sender: UITapGestureRecognizer) {
self.searchBar.resignFirstResponder()
}
You can use a general UIViewController extension
Just add a new swift file on the project and paste the following code snippet
Code
extension UIViewController {
func hideKeyboardWhenTappedAround() {
let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(UIViewController.dismissKeyboard(_:)))
tap.cancelsTouchesInView = false
view.addGestureRecognizer(tap)
}
#objc func dismissKeyboard(_ sender: UITapGestureRecognizer) {
view.endEditing(true)
if let nav = self.navigationController {
nav.view.endEditing(true)
}
}
}
Now call hideKeyboardWhenTappedAround() from viewDidLoad method where you want keyboard hiding feature.
class MaCaveViewController: UIViewController, UISearchBarDelegate {
#IBOutlet weak var searchBar: UISearchBar!
override func viewDidLoad() {
super.viewDidLoad()
searchBar.delegate = self
}
// When button "Search" pressed
func searchBarSearchButtonClicked(_ searchBar: UISearchBar){
print("end searching --> Close Keyboard")
self.searchBar.endEditing(true)
}
}
This works very well for me.
we can do this with following methods
func searchBarTextDidBeginEditing(searchBar: UISearchBar) {
searchBar.showsCancelButton = true;
}
func searchBarTextDidEndEditing(searchBar: UISearchBar) {
searchBar.showsCancelButton = false;
}
This works for me in Swift 4
func searchBarSearchButtonClicked(_ searchBar: UISearchBar){
self.searchBar.endEditing(true)
}
I Swift, i make a Search View using UISearcheController and UISearcheResultUpdating
and i update the result with func updateSearchResultsForSearchController
if self.searchController?.searchBar.text.lengthOfBytesUsingEncoding(NSUTF32StringEncoding) > 0 {
let searchBarText = self.searchController!.searchBar.text
var arrResult = DFManager.GetResult(searchBarText)
self.results?.addObjectsFromArray(arrResult)
// Reload a table with results.
self.searchResultsController?.tableView.reloadData()
}
But that is result always updating when i type char by char, it make this app slowly. I want this result only update when type return key?
Try this:
func searchBarSearchButtonClicked(searchBar: UISearchBar) {
//do something
searchBar.resignFirstResponder() //hide keyboard
}
And dont forget to add the searchBar delegate:
class SomeViewController: UIViewController, UISearchBarDelegate {
#IBOutlet weak var searchBar: UISearchBar!
override func viewDidLoad() {
searchBar.delegate = self
}
}