I have this piece of code
class func catchWeightList(catchWeightButton : UIButton, productCatchWeightList:NSArray){
let window = UIApplication.sharedApplication().keyWindow
let tap = UITapGestureRecognizer(target: self, action: Selector("handleTap:"))
let catchWeightVC = CatchWeight.init(nibName: "CatchWeight", bundle: nil,dataSource: productCatchWeightList, catchWeightButton: catchWeightButton)
if catchWeightVC.view.superview == nil {
let y = catchWeightButton.frame.origin.y+catchWeightButton.frame.height+64
catchWeightVC.view.frame = CGRectMake(catchWeightButton.frame.origin.x, y ,catchWeightButton.frame.width, 90)
window?.addSubview(catchWeightVC.view)
window?.addGestureRecognizer(tap)
}
else{
catchWeightVC.view.removeFromSuperview()
window?.removeGestureRecognizer(tap)
}
}
class func handleTap(sender: UITapGestureRecognizer? = nil) {
// catchWeightVC?.view.removeFromSuperview()
let window = UIApplication.sharedApplication().keyWindow
window?.removeGestureRecognizer(sender!)
}
How to pass catchWeightVC in handleTap?
Related
I have these lines of code in which if I stop on the X to delete an image I delete it. The problem is that if I have one or more of the same type of image, removing one of them, it also erases all the other identical ones. I think my problem is in calling the "forEach". What should I use?
While if the images are different, I delete correctly the single "sticker".
guard let id = gestureRecognizer.stringIdentifier else {return}
stickerArray.forEach { (sticker) in
if id == sticker.stickerIdentifier {
STKProbes.deleteSticker.send(from: nil, info: sticker.stickerIdentifier)
sticker.removeFromSuperview()
sticker.image = nil
if let index = stickerArray.index(of: sticker) {
stickerArray.remove(at: index)
}
}
}
func appendSticker(model: CoreSceneViewModel.AddSticker.ViewModel) {
let sticker = StickerView(frame: PlacementManager.categoryPlacement(forCategory: model.category, over: self.managedView.workbenchView), name: model.name)
self.managedView.controlsView.alpha = 0
self.managedView.closeButton.alpha = 0
self.stickerArray.append(sticker)
STKProbes.tapSticker.send(from: nil, info: sticker.stickerIdentifier)
sticker.image = model.sticker
sticker.contentMode = .scaleAspectFit
if kFreezeOldStickers {
for view in self.managedView.workbenchView.subviews {
if let grs = view.gestureRecognizers {
for gr in grs {
view.removeGestureRecognizer(gr)
}
}
}
}
draggingGesture = UIPanGestureRecognizer(target: self, action: #selector(dragging(gestureRecognizer:)))
sticker.addGestureRecognizer(draggingGesture)
pinchGesture = UIPinchGestureRecognizer(target: self, action: #selector(pinched(gestureRecognizer:)))
sticker.addGestureRecognizer(pinchGesture)
rotationGesture = UIRotationGestureRecognizer(target: self, action: #selector(rotated(gestureRecognizer:)))
sticker.addGestureRecognizer(rotationGesture)
tapGestureAlpha = UITapGestureRecognizer(target: self, action: #selector(setAlpha0(gestureRecognizer:)))
self.managedView.workbenchView.addGestureRecognizer(tapGestureAlpha)
tapGesture = TapGesture(target: self, action: #selector(tapped(gestureRecognizer:)))
tapGesture.idIdentifier = sticker.stickerIdentifier
sticker.addGestureRecognizer(tapGesture)
dTapGesture = DeleteTapGesture(target: self, action: #selector(cancelTapped(gestureRecognizer:)))
dTapGesture.stringIdentifier = sticker.stickerIdentifier
sticker.xButton.addGestureRecognizer(dTapGesture)
sticker.xButton.isUserInteractionEnabled = true
sticker.isUserInteractionEnabled = true
sticker.layer.zPosition = 0
draggingGesture.delegate = self
self.managedView.workbenchView.addSubview(sticker)
You can try
stickerArray.forEach {
if $0.xButton == gestureRecognizer.view {
$0.removeFromSuperview()
}
}
you may have similar stringIdentifier for items
I have created UIViews programmatically based on the number of items i stored in my UserDefaults and each UIView represents an item from the userDefaults and have added UITapGestureRecognizer on top of it. Now this UIViews when clicked will send my user to a new view controller, now my problem is how do I pass a parameter which will hold a value so that the new view controller can determine which view was clicked. Below is my code
//Retrieving my userDefaults values
let items = preferences.object(forKey: selectedOffer)
//How i loop and create my UIViews
if let array = items as! NSArray?{
totalOffers = array.count
let castTotalOffers = CGFloat(totalOffers)
var topAnchorConstraint: CGFloat = 170
var cardHeight: CGFloat = 145
for obj in array {
if let dict = obj as? NSDictionary{
offerName = dict.value(forKey: "NAME") as! String
let offerPrice = dict.value(forKey: "PRICE") as! String
let offerDescription = dict.value(forKey: "DESCRIPTION") as! String
//creating the uiview
let offerView = UIView()
self.scrollView.addSubview(offerView)
offerView.translatesAutoresizingMaskIntoConstraints = false
offerView.topAnchor.constraint(equalTo: self.appBackImage.bottomAnchor, constant: topAnchorConstraint).isActive = true
offerView.leadingAnchor.constraint(equalTo: self.view.leadingAnchor, constant: 20.0).isActive = true
offerView.trailingAnchor.constraint(equalTo: self.view.trailingAnchor, constant: -20.0).isActive = true
offerView.backgroundColor = UIColor.white
offerView.heightAnchor.constraint(equalToConstant: 130).isActive = true
//transforming to cards
offerView.layer.cornerRadius = 2
offerView.layer.shadowOffset = CGSize(width: 0, height: 5)
offerView.layer.shadowColor = UIColor.black.cgColor
offerView.layer.shadowOpacity = 0.1
self.scrollView.contentSize.height = CGFloat(totalOffers) + topAnchorConstraint + 70
//Adding gesture
let touchRec = UITapGestureRecognizer(target: self, action: #selector(goToBuyBundle(offerClicked:offerName)))
offerView.addGestureRecognizer(touchRec)
}
}
}
//Function to go to buy offer
#objc func goToBuyBundle(_sender: UITapGestureRecognizer, offerClicked:String){
guard let moveTo = storyboard?.instantiateViewController(withIdentifier: "BuyOfferViewController") as? BuyOfferViewController else {return}
moveTo.selectedOffer = offerClicked
self.addChildViewController(moveTo)
moveTo.view.frame = self.view.frame
self.view.addSubview(moveTo.view)
moveTo.didMove(toParentViewController: self)
}
Just want a way when i navigate to the next view controller i can retrieve which UIView was clicked by using the offerName.
Thanks in Advance
Make your custom View and store the parameter that you want to pass through the Gesture Recognizer inside the view.
class GestureView: UIView{
var myViewValue: String? // Or whichever type of value you want to store and send via the gesture
}
When you initiate your view, add the value as per your requirement:
let panReceptor = GestureView()
panReceptor.myViewValue = "Hello World"
Add a simple TapGesture on this custom view and you may pass the value as below:
let tapGesture = UITapGestureRecognizer.init(target: self, action: #selector(viewTapped(sender:)))
panReceptor.addGestureRecognizer(tapGesture)
#objc func viewTapped(sender: UITapGestureRecognizer){
guard let unwrappedView = sender.view as? GestureView else { return }
print("Gesture View value : \(unwrappedView.myViewValue)")
}
In the above example I have in effect passed a String parameter through the sender.view.
You may pass any type in this manner and use the value as per your requirement in the selector method.
You could add custom variable to UITapGestureRecognizer something like:
import UIKit
private var assocKey : UInt8 = 0
extension UITapGestureRecognizer {
public var offerName:String{
get{
return objc_getAssociatedObject(self, &assocKey) as! String
}
set(newValue){
objc_setAssociatedObject(self, &assocKey, newValue, objc_AssociationPolicy.OBJC_ASSOCIATION_RETAIN)
}
}
}
And then use it like:
...
let touchRec = UITapGestureRecognizer(target: self, action: #selector(goToBuyBundle(offerClicked:offerName)))
touchRec.offerName = offerName
offerView.addGestureRecognizer(touchRec)
...
#objc func goToBuyBundle(_sender: UITapGestureRecognizer, offerClicked:String){
guard let moveTo = storyboard?.instantiateViewController(withIdentifier: "BuyOfferViewController") as? BuyOfferViewController else {return}
moveTo.selectedOffer = sender.offerName
...
}
I'm trying to make a choose-your-own adventure game that changes the text of two labels (the user choices) depending on which label the user taps. I figured I would just do a very nested if-else statement rather than bother with trying to implement a binary tree. I know how to attach the gesture recognizer to a label (I think):
let tapped1 = UITapGestureRecognizer(target: self, action: #selector(VCGame.usrChose1))
choice1.isUserInteractionEnabled = true
choice1.addGestureRecognizer(tapped1)
let tapped2 = UITapGestureRecognizer(target: self, action: #selector(VCGame.usrChose2))
choice2.isUserInteractionEnabled = true
choice2.addGestureRecognizer(tapped2)
and I can define what to do when the label is touched in the usrChose1 and usrChose2 functions, however, those functions only work once: the first time the function is chosen and my game has more than just one choice. From there, the labels will just do the same thing if the user touches them.
How would I go about having a condition inside the if-else statement that evaluates to true or false if label1 or label2 is tapped?
Here's the code for usrChoice1 and usrChoice2, for clarification
func usrChose1(sender : UITapGestureRecognizer) {
print("tap 1 working")
choice1.text = "choice1.1"
choice2.text = "choice1.2"
}
func usrChose2(sender : UITapGestureRecognizer) {
print("tap2 working")
choice1.text = "update2.1";
choice2.text = "update2.2"
}
Below image shows my requirement :
According to your requirement, I have tried the following:
I have made a dummy project with two labels inside a view controller
ViewController.swift
import UIKit
class ViewController: UIViewController {
#IBOutlet weak var choice1Label: UILabel!
#IBOutlet weak var choiceLabel2: UILabel!
var tapStart: Bool = false
var levelType1: Level?
var levelType2: Level?
override func viewDidLoad() {
super.viewDidLoad()
let tapped1 = UITapGestureRecognizer(target: self, action: #selector(usrChose1))
choice1Label.isUserInteractionEnabled = true
choice1Label.addGestureRecognizer(tapped1)
let tapped2 = UITapGestureRecognizer(target: self, action: #selector(usrChose2))
choiceLabel2.isUserInteractionEnabled = true
choiceLabel2.addGestureRecognizer(tapped2)
setup()
}
var currentLevel1: Level?
var currentLevel2: Level?
func setup() {
let lb2Child1Child1 = Level(text: "2.1.1", subLevels: nil)
let lb2Child1Child2 = Level(text: "2.1.2", subLevels: nil)
let lb1Child1Child1 = Level(text: "1.1.1", subLevels: nil)
let lb1Child1Child2 = Level(text: "1.1.2", subLevels: nil)
let lb1Child2Child1 = Level(text: "1.2.1", subLevels: nil)
let lb1Child2Child2 = Level(text: "1.2.2", subLevels: nil)
let lb1Child1 = Level(text: "1.1", subLevels: [lb1Child1Child1, lb1Child1Child2])
let lb1Child2 = Level(text: "1.2", subLevels: [lb1Child2Child1, lb1Child2Child2])
let lb2Child1 = Level(text: "2.1", subLevels: [lb2Child1Child1, lb2Child1Child2])
let lb2Child2 = Level(text: "2.2", subLevels: nil)
levelType1 = Level(text: "1", subLevels: [lb1Child1, lb1Child2])
levelType2 = Level(text: "2", subLevels: [lb2Child1, lb2Child2])
choice1Label.text = levelType1!.text ?? ""
choiceLabel2.text = levelType2!.text ?? ""
}
func usrChose1(sender : UITapGestureRecognizer) {
if !tapStart {
currentLevel1 = levelType1
tapStart = true
}
if let subLevelsArray = currentLevel1?.subLevels {
print(subLevelsArray[0].text ?? "")
print(subLevelsArray[1].text ?? "")
choice1Label.text = subLevelsArray[0].text ?? ""
choiceLabel2.text = subLevelsArray[1].text ?? ""
currentLevel1 = subLevelsArray[0]
currentLevel2 = subLevelsArray[1]
}
}
func usrChose2(sender : UITapGestureRecognizer) {
//print("tap2 working")
// choice1Label.text = "update2.1";
//choiceLabel2.text = "update2.2"
if !tapStart {
currentLevel2 = levelType2
tapStart = true
}
if let subLevelsArray = currentLevel2?.subLevels {
print(subLevelsArray[0].text ?? "")
print(subLevelsArray[1].text ?? "")
choice1Label.text = subLevelsArray[0].text ?? ""
choiceLabel2.text = subLevelsArray[1].text ?? ""
currentLevel1 = subLevelsArray[0]
currentLevel2 = subLevelsArray[1]
}
}
}
I have made a class named Level to represent a single level and each level contains sublevels
Level.swift
import UIKit
class Level {
var text: String?
var subLevels: [Level]?
init(text: String, subLevels: [Level]?) {
self.text = text
self.subLevels = subLevels ?? nil
}
}
You have to add UITapGestureRecognizer in UILabel or UIView whatever is container.
Add 2 different Int variables in each functions usrChose1 and usrChose2 respectively, which will be work as a counter.
var i = 0
var j = 0
func usrChose1(_ recognizer: UITapGestureRecognizer) {
i++
print("Total clicked label 1 :::",i)
}
func usrChose2(_ recognizer: UITapGestureRecognizer) {
j++
print("Total clicked label 2 :::",j)
}
I am trying to get the previous/next arrow button on top of the keyboard when ever a textField is selected.
I have tried the following
textField0.tag = 0 // textField0 : TextField
textField0.addPreviousNextRightOnKeyboardWithTarget(self, rightButtonTitle: "Submit", previousAction: #selector(previousTextField(sender:)), nextAction: #selector(nextTextField(sender:)), rightButtonAction: #selector(saveNewPlan), titleText: nil)
textField1.tag = 1
textField1.addPreviousNextRightOnKeyboardWithTarget(self, rightButtonTitle: "Submit", previousAction: #selector(previousTextField(sender:)), nextAction: #selector(nextTextField(sender:)), rightButtonAction: #selector(saveNewPlan), titleText: nil)
The previous/next action selector defined as such.
func previousTextField(sender: AnyObject){
// I actually get the sender as IQBarButtonItem (subclass of UIBarButtonItem) instead of UITextField here
if let previousField = textField.superview?.viewWithTag(textField.tag - 1) as? UITextField {
_ = previousField.becomeFirstResponder()
}
}
func nextTextField(sender: AnyObject){
if let nextField = textField.superview?.viewWithTag(textField.tag + 1) as? UITextField {
_ = nextField.becomeFirstResponder()
}
}
It's throwing this error whenever I click on the button.
Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[IQKeyboardManagerSwift.IQBarButtonItem superview]: unrecognized selector sent to instance 0x7fc3775658e0'
Here's what the method do.
public func addPreviousNextRightOnKeyboardWithTarget( _ target : AnyObject?, rightButtonTitle : String, previousAction : Selector, nextAction : Selector, rightButtonAction : Selector, titleText : String?) {
//If can't set InputAccessoryView. Then return
if self.responds(to: #selector(setter: UITextField.inputAccessoryView)) {
// Creating a toolBar for phoneNumber keyboard
let toolbar = IQToolbar()
toolbar.doneTitle = rightButtonTitle
var items : [UIBarButtonItem] = []
let prev : IQBarButtonItem
let next : IQBarButtonItem
// Get the top level "bundle" which may actually be the framework
var bundle = Bundle(for: IQKeyboardManager.self)
if let resourcePath = bundle.path(forResource: "IQKeyboardManager", ofType: "bundle") {
if let resourcesBundle = Bundle(path: resourcePath) {
bundle = resourcesBundle
}
}
var imageLeftArrow : UIImage!
var imageRightArrow : UIImage!
if #available(iOS 10.0, *) {
imageLeftArrow = UIImage(named: "IQButtonBarArrowUp", in: bundle, compatibleWith: nil)
imageRightArrow = UIImage(named: "IQButtonBarArrowDown", in: bundle, compatibleWith: nil)
} else {
imageLeftArrow = UIImage(named: "IQButtonBarArrowLeft", in: bundle, compatibleWith: nil)
imageRightArrow = UIImage(named: "IQButtonBarArrowRight", in: bundle, compatibleWith: nil)
}
//Support for RTL languages like Arabic, Persia etc... (Bug ID: #448)
if #available(iOS 9.0, *) {
imageLeftArrow = imageLeftArrow?.imageFlippedForRightToLeftLayoutDirection()
imageRightArrow = imageRightArrow?.imageFlippedForRightToLeftLayoutDirection()
}
prev = IQBarButtonItem(image: imageLeftArrow, style: UIBarButtonItemStyle.plain, target: target, action: previousAction)
prev.accessibilityLabel = "Toolbar Previous Button"
next = IQBarButtonItem(image: imageRightArrow, style: UIBarButtonItemStyle.plain, target: target, action: nextAction)
next.accessibilityLabel = "Toolbar Next Button"
//Previous button
items.append(prev)
//Fixed space
let fixed = IQBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.fixedSpace, target: nil, action: nil)
if #available(iOS 10.0, *) {
fixed.width = 6
} else {
fixed.width = 20
}
items.append(fixed)
//Next button
items.append(next)
//Flexible space
items.append(UIView.flexibleBarButtonItem())
//Title button
let title = IQTitleBarButtonItem(title: shouldHidePlaceholderText == true ? nil : titleText)
items.append(title)
//Flexible space
items.append(UIView.flexibleBarButtonItem())
//Right button
let doneButton = IQBarButtonItem(title: rightButtonTitle, style: UIBarButtonItemStyle.done, target: target, action: rightButtonAction)
items.append(doneButton)
// Adding button to toolBar.
toolbar.items = items
toolbar.toolbarTitleInvocation = self.titleInvocation
// Setting toolbar to keyboard.
if let textField = self as? UITextField {
textField.inputAccessoryView = toolbar
switch textField.keyboardAppearance {
case UIKeyboardAppearance.dark:
toolbar.barStyle = UIBarStyle.black
default:
toolbar.barStyle = UIBarStyle.default
}
} else if let textView = self as? UITextView {
textView.inputAccessoryView = toolbar
switch textView.keyboardAppearance {
case UIKeyboardAppearance.dark:
toolbar.barStyle = UIBarStyle.black
default:
toolbar.barStyle = UIBarStyle.default
}
}
}
}
I use this code:
var textView = UITextView(x: 10, y: 10, width: CardWidth - 20, height: placeholderHeight) //This is my custom initializer
textView.text = "dsfadsaf www.google.com"
textView.selectable = true
textView.dataDetectorTypes = UIDataDetectorTypes.Link
textView.delegate = self
addSubview(textView)
The problem is the link needs long tap gesture to open. I want it to open with a single tap, just like in the Facebook app.
The example below only works on iOS 8+
Tap recognizer:
let tapRecognizer = UITapGestureRecognizer(target: self, action: Selector("tappedTextView:"))
myTextView.addGestureRecognizer(tapRecognizer)
myTextView.selectable = true
Callback:
func tappedTextView(tapGesture: UIGestureRecognizer) {
let textView = tapGesture.view as! UITextView
let tapLocation = tapGesture.locationInView(textView)
let textPosition = textView.closestPositionToPoint(tapLocation)
let attr: NSDictionary = textView.textStylingAtPosition(textPosition, inDirection: UITextStorageDirection.Forward)
if let url: NSURL = attr[NSLinkAttributeName] as? NSURL {
UIApplication.sharedApplication().openURL(url)
}
}
Swift 3 and no force unwraps:
func tappedTextView(tapGesture: UIGestureRecognizer) {
guard let textView = tapGesture.view as? UITextView else { return }
guard let position = textView.closestPosition(to: tapGesture.location(in: textView)) else { return }
if let url = textView.textStyling(at: position, in: .forward)?[NSLinkAttributeName] as? URL {
UIApplication.shared.open(url)
}
}