I have added GestureRecognizer for hide keyboard when user click to anywhere in view without textview. Its working well but CollectionView Cells need two tap for work, when I delete GestureRecognizer its working well but I need both of them. I have searched this in couple hours and tried so many solutions but anything is not worked.
GestureRecognizer for hide keyboard when user click to anywhere in view without textview;
let tapRecognizer = UITapGestureRecognizer(target: self, action: #selector(handleTap))
tapRecognizer.cancelsTouchesInView = false
view.addGestureRecognizer(tapRecognizer)
#objc func handleTap() {
textBody.endEditing(true)
}
You can try this method:
public override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
view.endEditing(true) // or textBody.endEditing(true)
}
To recognize both gestures simultaneously use below code by removing cancelsTouchesInView line. You may need to add another tap gesture for your collectionView according to your need. Or use scrollViewDidScroll event of collectionView to hide the keyboard.
//tapRecognizer.cancelsTouchesInView = false
tapRecognizer.delegate = self
view.addGestureRecognizer(tapRecognizer)
extension MyViewController: UIGestureRecognizerDelegate {
func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
return true
}
Related
I am using both a tap and pan gesture in my View. The view has a UICollectionView where I am trying to call didSelectItemAthowever the method is not called.
I have tried the following, but with no luck.
override func viewDidLoad() {
panGesture.delegate = self
tapGesture.delegate = self
}
extension AddNotebookViewController: UIGestureRecognizerDelegate {
func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
return true
}
}
Does anybody have any idea what the issue may be ?
The problem, as you've already guessed, is that the background view's gesture recognizer swallows the tap that would select the collection view cell. To solve the problem, implement this gesture recognizer delegate method in your view controller:
func gestureRecognizerShouldBegin(_ gr: UIGestureRecognizer) -> Bool {
let p = gr.location(in: self.view)
let v = self.view.hitTest(p, with: nil)
return v == gr.view
}
The result is that if the gesture is in the collection view, the background view's gesture recognizer won't begin and normal selection will be able to take place.
Is it possible to implement a long press gesture on a UITextView? Basically, if the user tap once on a textview I want him/her to be able to edit the text. However, if he/she tap and hold on the textview (let's say for two seconds) an action will be performed? If the answer is yes please give me direction on how this could be achieved?
Follows is the solution for my problem as per kchromik's asnwer:
(1) First step is define the following extension before the ViewController Class begins:
extension ViewController: UIGestureRecognizerDelegate { func gestureRecognizer (_ gestureRecognizer: UIGestureRecognizer, shouldRecognizerSimultaneouslyWithotherGestureRecognizer: UIGestureRecognizer) -> Bool { return true}}
(2) Second step is to link the UITextView Outlet from the Main Storyboard to the swift code file:
#IBOutlet weak var testTextView: UITextView!
(3) Third step is to drag and drop a GestureRecognizer from the Object Library on top of the UITextView you want to implement a Longpress Gesture Recognizer on.
(4) The Fourth step is add the below code under viewDidLoad () {
let uilpgr = UILongPressGestureRecognizer(target: self, action: #selector(ViewController.longpress(gestureRecognizer:)))
uilpgr.minimumPressDuration = 2
testTextView.addGestureRecognizer(uilpgr)
uiplgr.delegate = self
}
(5) The last step is to define the function to be used with the Longpress Gesture Recognizer defined earlier on:
func longpress(gestureRecognizer: UIGestureRecognizer) {
print("Long tap") // Execute what you want to do
}
By default a UILabel has user interactions disabled. Try testLabel.isUserInteractionEnabled = true in your viewDidLoad or enable it in the storyboard:
UPDATE
If you UIView has it's own gesture recogniser, you can implement following delegate:
extension ViewController: UIGestureRecognizerDelegate {
func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
return true
}
}
And you don't forget to set uilpgr.delegate = self
In my app I have a small menu I made which is basically a UIView with two button on it. The menu opens when the user taps a button and closes also when the user taps the same button. I'd like the menu to close when the user taps anywhere outside of the menu UIView.
The menu:
You can also apply this easy way
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.tapBlurButton(_:)))
self.view.addGestureRecognizer(tapGesture)
func tapBlurButton(_ sender: UITapGestureRecognizer) {
if //checkmenuopen
{
closemenuhere
}
}
For that when you show the small menu, add below it a invisible button (UIColor.clear) with the entire screen as a frame. And it's action is to dismiss the menu of yours.
Make sure when you dismiss the small menu to dismiss thus button as well.
Hope this helps!
You can use basically touches began function
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
print("TAPPED SOMEWHERE ON VIEW")
}
There are several solutions to your case:
1- Implementing touchesBegan(_:with:) method in your ViewController:
Tells this object that one or more new touches occurred in a view or
window.
Simply, as follows:
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
// do something
}
2- Add a UITapGestureRecognizer to the main view of your ViewController:
override func viewDidLoad() {
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(doSomething(_:)))
view.addGestureRecognizer(tapGesture)
}
func doSomething(_ sender: UITapGestureRecognizer) {
print("do something")
}
Or -of course- you could implement the selector without the parameter:
override func viewDidLoad() {
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(doSomething))
view.addGestureRecognizer(tapGesture)
}
func doSomething() {
print("do something")
}
3- You could also follow Mohammad Bashir Sidani's answer.
I would suggest to make sure add the appropriate constraints to your button whether it has been added programmatically or by storyboard.
I'm not sure the code below will work in your case, just a advice.
class ViewController: UIViewController {
var closeMenuGesture: UITapGestureRecognizer!
override func viewDidLoad() {
super.viewDidLoad()
closeMenuGesture = UITapGestureRecognizer(target: self, action: #selector(closeMenu))
closeMenuGesture.delegate = self
// or closeMenuGesture.isEnable = false
}
#IBAction func openMenu() {
view.addGestureRecognizer(closeMenuGesture)
// or closeMenuGesture.isEnabled = true
}
#IBAction func closeMenu() {
view.removeGestureRecognizer(closeMenuGesture)
// or closeMenuGesture.isEnabled = false
}
}
extension ViewController: UIGestureRecognizerDelegate {
func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldReceive touch: UITouch) -> Bool {
return touch.view === self.view // only valid outside menu UIView
}
}
And I never be in this situation so not sure making enable/disable closeMenuGesture is enough to ensure other controls work normally, or to add/remove closeMenuGesture is more insured.
I am using this code to dismiss keyboard when user click's outside the TextField
override func viewDidLoad() {
...
let tapGesture = UITapGestureRecognizer(target: self, action: "tap:")
view.addGestureRecognizer(tapGesture)
...
}
func tap(gesture: UITapGestureRecognizer) {
txtName.resignFirstResponder()
}
It is working when the user click's anywhere outside the textfield but the datepicker. When he put's a name and then click on the DatePicker (just click, not roll) the tap is not recognized.
What should I do to make it work?
It's possible the gesture recogniser on the DatePicker is interfering with yours. See if modifying this function helps your case.
func gestureRecognizer(gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWithGestureRecognizer otherGestureRecognizer: UIGestureRecognizer) -> Bool {
return true //Obviously think about the logic of what to return in various cases
}
I have a "search" UITextField at the top of my view.
Below this, I have a UICollectionView which is populated with the search results as the user types.
When a user is typing into the UITextView, the keyboard is displayed. At first, I wanted to hide the keyboard if the user touched anywhere outside the UITextField. I accomplished this with the following:
func textFieldDidBeginEditing(textField: UITextField) {
if (textField == self.textFieldSearch) {
NSNotificationCenter.defaultCenter().addObserver(self, selector: "textFieldSearchDidChange:", name: UITextFieldTextDidChangeNotification, object: textField)
}
var tapGesture = UITapGestureRecognizer(target: self, action: "dismissKeyboard:")
self.view.addGestureRecognizer(tapGesture)
}
func dismissKeyboard(gesture: UIGestureRecognizer) {
self.textFieldSearch.resignFirstResponder()
self.view.removeGestureRecognizer(gesture)
}
However, if the user taps on a UICollectionViewCell, the dismissKeyboard func runs, and hides the keyboard, but the user has to tap on the cell again to run the func:
func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
How do I do this all in one step? So if the user touches anywhere outside the UITextField, hide the keyboard...but if the user happens to touch a UICollectionViewCell, run the didSelectItemAtIndexPath function on the first touch as well as hide the keyboard and end editing on the UITextField?
Any help is appreciated!
Thanks
Please try this one
func gestureRecognizer(gestureRecognizer: UIGestureRecognizer, shouldReceiveTouch touch: UITouch) -> Bool {
if touch.view == self.textFieldSearch{
return false;
}
else{
return true;
}
}
and add this line in your code
var tapGesture = UITapGestureRecognizer(target: self, action: "dismissKeyboard:")
tapGesture.delegate = self // add gesture delegate here
self.view.addGestureRecognizer(tapGesture)
You can implement the delegate method of UIGestureRecognizerDelegate
optional func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer,
shouldReceiveTouch touch: UITouch) -> Bool
Above method returns NO for the views on which gesture recognizer should not be called and in your case it should be collection view else for other things return YES.
example implementation-
/**
Disallow recognition of tap gestures on the collection view.
*/
func gestureRecognizer(recognizer: UIGestureRecognizer, shouldReceiveTouch touch: UITouch) -> Bool
{
if touch.view == collectionView && recognizer == tapRecognizer {
return false
}
return true
}
Here's a solution. A little janky but it should do the trick. You might have to tinker with it a little. Also my Swift isn't top notch so excuse any syntax errors.
func dismissKeyboard(gesture: UIGestureRecognizer) {
let point : CGPoint = gesture.locationInView(self.collectionView)
let indexPath : NSIndexPath = self.collectionView.indexPathForItemAtPoint(point)
self.textFieldSearch.resignFirstResponder()
self.view.removeGestureRecognizer(gesture)
self.collectionView.selectItemAtIndexPath(indexPath, animated:YES, scrollPosition:UICollectionViewScrollPosition.Top)
}
I am providing here a Objective-C code to dismiss keyBoard on any touch performed outside. Kindly write it in Swift for yourself. The problem is you are adding A tap Gesture which is hiding the touch events of your collection cell.
So instead of tap gesture use the Swift-translated code of the following code.
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
[self.view endEditing:YES];
}
Dont use your tap gesture. And I think things should get going for you...
EDIT
Some efforts to write the above code in swift for you...
override func touchesBegan(touches: NSSet, withEvent event: UIEvent){
self.view.endEditing(true)
}
This is the code that ended up finally working, with the help of #Sanjay above.
I still wanted to hide the keyboard if the user touched on the part of the collectionView that wasn't occupied by cells. I will still have to implement code for hiding the keyboard if a user 'swipes/scrolls/drags' on the UICollectionView instead of taps.
For now:
func gestureRecognizer(recognizer: UIGestureRecognizer, shouldReceiveTouch touch: UITouch) -> Bool {
for cell:AnyObject in self.collectionView.visibleCells() {
if (touch.view.isDescendantOfView(cell as UIView)) {
self.resignAllResponders()
return false
}
}
return true
}