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)
}
}
Related
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 am creating an app where I have annotation view showing that when you click it shows on the DetailsViewController that annotation data. However, I get "Name", and "Address" data but for phone Number I am getting set as nil. So, if you guys can see my code & help me solve it, I will be appreciated it.
Here is my code:
import UIKit
import MapKit
protocol UserLocationDelegate {
func userLocation(latitude :Double, longitude :Double)
}
class NearMeMapViewController: ARViewController, ARDataSource, MKMapViewDelegate, CLLocationManagerDelegate {
var nearMeIndexSelected = NearMeIndexTitle ()
var locationManager : CLLocationManager!
var nearMeARAnnotations = [ARAnnotation]()
var nearMeRequests = [NearMeRequest]()
var delegate : UserLocationDelegate!
var place: Place?
override func viewDidLoad() {
super.viewDidLoad()
self.title = nearMeIndexSelected.indexTitle
self.locationManager = CLLocationManager ()
self.locationManager.delegate = self
self.locationManager.desiredAccuracy = kCLLocationAccuracyBest
self.locationManager.distanceFilter = kCLHeadingFilterNone
self.locationManager.requestWhenInUseAuthorization()
self.locationManager.startUpdatingLocation()
self.dataSource = self
self.headingSmoothingFactor = 0.05
self.maxVisibleAnnotations = 30
getNearMeIndexSelectedLocation()
}
func getNearMeIndexSelectedLocation()
{
let nearMeRequest = MKLocalSearchRequest()
nearMeRequest.naturalLanguageQuery = nearMeIndexSelected.indexTitle
let nearMeregion = MKCoordinateRegionMakeWithDistance(self.locationManager.location!.coordinate, 250, 250)
nearMeRequest.region = nearMeregion
let nearMeSearch = MKLocalSearch(request: nearMeRequest)
nearMeSearch.start { (response : MKLocalSearchResponse?, error :Error?) in
for requestItem in (response?.mapItems)! {
let nearMeIndexRequest = NearMeRequest ()
nearMeIndexRequest.name = requestItem.name
nearMeIndexRequest.coordinate = requestItem.placemark.coordinate
nearMeIndexRequest.address = requestItem.placemark.addressDictionary?["FormattedAddressLines"] as! [String]
nearMeIndexRequest.street = requestItem.placemark.addressDictionary?["Street"] as! String!
nearMeIndexRequest.city = requestItem.placemark.addressDictionary?["City"] as! String
nearMeIndexRequest.state = requestItem.placemark.addressDictionary?["State"] as! String
nearMeIndexRequest.zip = requestItem.placemark.addressDictionary?["ZIP"] as! String
self.nearMeRequests.append(nearMeIndexRequest)
print(requestItem.placemark.name)
}
for nearMe in self.nearMeRequests {
let annotation = NearMeAnnotation(nearMeRequest: nearMe)
self.nearMeARAnnotations.append(annotation)
self.setAnnotations(self.nearMeARAnnotations)
}
}
}
func ar(_ arViewController: ARViewController, viewForAnnotation: ARAnnotation) -> ARAnnotationView {
let annotationView = NearMeARAnnotationView(annotation: viewForAnnotation)
// annotationView.delegate = self
annotationView.frame = CGRect(x: 0, y: 0, width: 150, height: 50)
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.tapBlurButton(_:)))
annotationView.addGestureRecognizer(tapGesture)
return annotationView
}
func tapBlurButton(_ sender: UITapGestureRecognizer) {
if let annotationView = sender.view as? NearMeARAnnotationView {
if let detailsVc = storyboard?.instantiateViewController(withIdentifier: "DetailsViewController")
as? DetailsViewController {
detailsVc.annotation = annotationView.annotation
if let annotation = annotationView.annotation as? Place {
detailsVc.place = annotation
}
self.navigationController?.pushViewController(detailsVc, animated: true)
}
}
}
}
Just looking over your code quickly:
"\(nearMeAnnotation.nearMeRequest.phone)"
All the other ones have a forced unwrap, this one doesn't. Most probably the value is nil and since you ask for a string representation of a wrapped var that might really be nil sometimes.
I think you should use a default value everywhere instead of a forced unwrap, like:
"\(nearMeAnnotation.nearMeRequest.phone ?? "")"
but also:
"\(nearMeAnnotation.nearMeRequest.street ?? "") \(nearMeAnnotation.nearMeRequest.state ?? "") \(nearMeAnnotation.nearMeRequest.state ?? "") \(nearMeAnnotation.nearMeRequest.zip ?? "")"
With forced unwraps your application will crash if a certain value is not set. This could be handled more elegantly if they're really required, for example already in the constructor of your object. There's the root cause of the optionals you're seeing. In this case NearMeAnnotation.
I was searching for this issue here, and found out that this issue is not common one.
Everyone had different approaches to solve it. I'm using Firebase and Gifu framework. Actually for the last one - i copied all the files to my project, but that didn't helped either.
Here is my source code:
import FirebaseDatabase
import FirebaseAuth
import Firebase
import UIKit
import Gifu
class ViewController: UIViewController {
#IBOutlet weak var userImage: AnimatableImageView!
var displayedUserId = ""
var AcceptedOrRejected = ""
override func viewDidLoad() {
super.viewDidLoad()
let urlArray = ["http://i.imgur.com/VAWlQ0S.gif", "http://i.imgur.com/JDzGqvE.gif", "http://67.media.tumblr.com/4cd2a04b60bb867bb4746d682aa60020/tumblr_mjs2dvWX6x1rvn6njo1_400.gif", "https://media.giphy.com/media/TlK63ELk5OPDzpb6Tao/giphy.gif", "http://i3.photobucket.com/albums/y90/spicestas/GeriHalliwell-Calling-new1.gif", "http://media.tumblr.com/tumblr_lnb9aozmM71qbxrlp.gif"]
var counter = 1
for url in urlArray {
let nsUrl = NSURL(string: url)
let girls = ProfileClass()
girls.profilePhotoUrl = url
girls.profileGender = "female"
girls.profileName = "girlsname\(counter)"
girls.profileSurname = "girlsurname\(counter)"
girls.interest = "men"
girls.uid = "\(randomStringWithLength(45))"
counter++
girls.SaveUser()
}
//----setting variables
let label = UILabel(frame: CGRectMake(self.view.bounds.width / 2 - 100, self.view.bounds.height / 2 - 50, 300, 100))
//label.text = "Drag me!"
//label.textAlignment = NSTextAlignment.Center
self.view.addSubview(label)
let gesture = UIPanGestureRecognizer(target: self, action: Selector("wasDragged:"))
userImage.addGestureRecognizer(gesture)
userImage.userInteractionEnabled = true
//----getting access to database
let thisUserRef = URL_BASE.childByAppendingPath("profile")
thisUserRef.queryOrderedByChild("Interest").queryEqualToValue("men").observeEventType(.Value, withBlock: {
snapshot in
for child in snapshot.children{
self.displayedUserId = (child.value["uid"] as? String)!
let imageURL = child.value["photo"] as? String
let imURL = NSURL(string: imageURL!)
//print(imageURL)
if self.AcceptedOrRejected != "" {
let AcceptedArray = child.value[AcceptedOrRejected] as? Array
AcceptedArray.append(displayedUserId)
}
if let picData = NSData(contentsOfURL: imURL!) {
self.userImage.animateWithImageData(picData)
//self.userImage.image = UIImage(data: picData)
}
}
})
}
//-----Dragging function-----------
func wasDragged(gesture: UIPanGestureRecognizer) {
//set traslations
let translation = gesture.translationInView(self.view)
let label = gesture.view
//set center position
label!.center = CGPoint(x: self.view.bounds.width / 2 + translation.x, y: self.view.bounds.height / 2 - translation.y )
let xfromCenter = (label?.center.x)! - self.view.bounds.width / 2
let scale = min(100 / abs(xfromCenter),1)
var rotation = CGAffineTransformMakeRotation(xfromCenter / 200)
var strech = CGAffineTransformScale(rotation, scale, scale)
label?.transform = strech
if gesture.state == UIGestureRecognizerState.Ended {
if label?.center.x < 100 {
self.AcceptedOrRejected = "Accepted"
} else if label?.center.x > self.view.bounds.width / 100 {
self.AcceptedOrRejected = "Rejected"
}
rotation = CGAffineTransformMakeRotation(0)
strech = CGAffineTransformScale(rotation, 1, 1)
label?.transform = strech
label?.center = CGPoint(x: self.view.bounds.width / 2 , y: self.view.bounds.height / 2 )
}
}
//---Function for generating randomn userid
func randomStringWithLength (len : Int) -> NSString {
let letters : NSString = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
let randomString : NSMutableString = NSMutableString(capacity: len)
for (var i=0; i < len; i += 1){
let length = UInt32 (letters.length)
let rand = arc4random_uniform(length)
randomString.appendFormat("%C", letters.characterAtIndex(Int(rand)))
}
return randomString
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "LogOutSegue" {
try! FIRAuth.auth()!.signOut()
}
}
}
And I get this error
1. While emitting SIL for 'viewDidLoad' at /Users/zkid18/Desktop/wrk/Bloom/Bloom/ViewController.swift:23:14
2. While silgen closureexpr SIL function #_TFFC5Bloom14ViewController11viewDidLoadFT_T_U_FCSo15FIRDataSnapshotT_ for expression at [/Users/zkid18/Desktop/wrk/Bloom/Bloom/ViewController.swift:68:114 - line:107:9] RangeText="{
snapshot in
for child in snapshot.children{
self.displayedUserId = (child.value["uid"] as? String)!
let imageURL = child.value["photo"] as? String
let imURL = NSURL(string: imageURL!)
//print(imageURL)
if self.AcceptedOrRejected != "" {
let AcceptedArray = child.value[AcceptedOrRejected] as? Array
AcceptedArray.append(displayedUserId)
}
if let picData = NSData(contentsOfURL: imURL!) {
self.userImage.animateWithImageData(picData)
//self.userImage.image = UIImage(data: picData)
}
}
}"
I don't really know what to do with that
I just attempted a conversion to Swift 3 to get a jump on fixing issues in my code. I have similar error but I just integrated Firebase into all of my project. I found that by removing the pod and framework from the app and commenting out all firebase code fixed this compile issue.
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?
I am currently working on adding cluster annotations to my map view. Everything is working fine with the exception of a couple of things. First of all, I need to refresh the annotations on the map when the user leaves and returns to the view. At the moment this sort of works... The problem is that rather than removing the annotations and adding the new ones, the new ones are just being added in addition of the old ones so there are multiplying each time.
The next issue is that each annotation displays the distance the user is from that annotation, however the annotations are set up before the user's location is found. I assume I will just have to remove and replace the annotations once the location is found, but then I run into the issue of the annotations duplicating again.
This is my code:
override func viewDidAppear(animated: Bool) {
println(rideArray.count)
setUpMapView()
}
func setUpMapView() {
rideArray = ((DataManager.sharedInstance.rideArray) as NSArray) as! [Ride]
myLocation = mapView.userLocation.coordinate as CLLocationCoordinate2D
zoomRegion = MKCoordinateRegionMakeWithDistance(CLLocationCoordinate2D(latitude: parkPassed.latitude!, longitude: parkPassed.longitude!), 1000, 1000)
mapView.setRegion(zoomRegion, animated: true)
mapView.delegate = self
for ride in rideArray {
println("Location: \(mapView.userLocation.coordinate.latitude)")
var subtitle = ""
if mapView.userLocation.location == nil {
subtitle = "Distance unavailable"
} else {
let userLocation = CLLocation(latitude: mapView.userLocation.coordinate.latitude, longitude: mapView.userLocation.coordinate.longitude)
let annotationLocation = CLLocation(latitude: ride.latitude!, longitude: ride.longitude!)
var distance = Int(CLLocationDistance(annotationLocation.distanceFromLocation(userLocation)))
if distance > 1000 {
distance = distance / 1000
subtitle = "\(distance) kilometers"
} else {
subtitle = "\(distance) meters"
}
}
let annotation = RideAnnotation(coordinate: CLLocationCoordinate2DMake(ride.latitude!, ride.longitude!), title: ride.name!, subtitle: subtitle)
self.qTree.insertObject(annotation)
}
var leftSwipe = UISwipeGestureRecognizer(target: self, action: Selector("handleSwipes:"))
var rightSwipe = UISwipeGestureRecognizer(target: self, action: Selector("handleSwipes:"))
leftSwipe.direction = .Left
rightSwipe.direction = .Right
view.addGestureRecognizer(leftSwipe)
view.addGestureRecognizer(rightSwipe)
}
func mapView(mapView: MKMapView!, viewForAnnotation annotation: MKAnnotation!) -> MKAnnotationView! {
if annotation.isKindOfClass(QCluster.classForCoder()) {
let PinIdentifier = "PinIdentifier"
var annotationView = mapView.dequeueReusableAnnotationViewWithIdentifier(ClusterAnnotationView.reuseId()) as? ClusterAnnotationView
if annotationView == nil {
annotationView = ClusterAnnotationView(cluster: annotation)
}
annotationView!.cluster = annotation
return annotationView
} else if annotation.isKindOfClass(RideAnnotation.classForCoder()) {
var pinView = mapView.dequeueReusableAnnotationViewWithIdentifier("RideAnnotation")
if pinView == nil {
pinView = MKAnnotationView(annotation: annotation, reuseIdentifier: "RideAnnotation")
pinView?.canShowCallout = true
pinView?.rightCalloutAccessoryView = UIButton.buttonWithType(UIButtonType.DetailDisclosure) as! UIButton
pinView?.rightCalloutAccessoryView.tintColor = UIColorFromRGB(0x424242)
let rideTimeView = UIView()
rideTimeView.frame = CGRectMake(5, 5, 50, 50)
rideTimeView.layer.cornerRadius = 25
let waitTimeLabel = UILabel()
waitTimeLabel.frame = CGRectMake(0, 0, 50, 50)
if DataManager.sharedInstance.getRideByName(annotation.title!)!.waitTime! == "Closed" {
waitTimeLabel.text = "\(DataManager.sharedInstance.getRideByName(annotation.title!)!.waitTime!)"
rideTimeView.backgroundColor = getColorFromNumber(80)
waitTimeLabel.font = UIFont(name: "Avenir", size: 15)
} else {
waitTimeLabel.text = "\(DataManager.sharedInstance.getRideByName(annotation.title!)!.waitTime!)m"
rideTimeView.backgroundColor = getColorFromNumber(DataManager.sharedInstance.getRideByName(annotation.title!)!.waitTime!.toInt()!)
waitTimeLabel.font = UIFont(name: "Avenir", size: 20)
}
waitTimeLabel.textAlignment = NSTextAlignment.Center
waitTimeLabel.textColor = UIColor.whiteColor()
waitTimeLabel.adjustsFontSizeToFitWidth = true
waitTimeLabel.numberOfLines = 1
rideTimeView.addSubview(waitTimeLabel)
pinView.leftCalloutAccessoryView = rideTimeView
pinView?.image = UIImage(named: "rideMapAnnotation")
} else {
pinView?.annotation = annotation
let rideTimeView = UIView()
rideTimeView.frame = CGRectMake(5, 5, 50, 50)
rideTimeView.layer.cornerRadius = 25
let waitTimeLabel = UILabel()
waitTimeLabel.frame = CGRectMake(0, 0, 50, 50)
if DataManager.sharedInstance.getRideByName(annotation.title!)!.waitTime! == "Closed" {
waitTimeLabel.text = "\(DataManager.sharedInstance.getRideByName(annotation.title!)!.waitTime!)"
rideTimeView.backgroundColor = getColorFromNumber(80)
waitTimeLabel.font = UIFont(name: "Avenir", size: 15)
} else {
waitTimeLabel.text = "\(DataManager.sharedInstance.getRideByName(annotation.title!)!.waitTime!)m"
rideTimeView.backgroundColor = getColorFromNumber(DataManager.sharedInstance.getRideByName(annotation.title!)!.waitTime!.toInt()!)
waitTimeLabel.font = UIFont(name: "Avenir", size: 20)
}
waitTimeLabel.textAlignment = NSTextAlignment.Center
waitTimeLabel.textColor = UIColor.whiteColor()
waitTimeLabel.adjustsFontSizeToFitWidth = true
waitTimeLabel.numberOfLines = 1
rideTimeView.addSubview(waitTimeLabel)
pinView.leftCalloutAccessoryView = rideTimeView
}
return pinView
}
return nil
}
func reloadAnnotations(){
if self.isViewLoaded() == false {
return
}
self.cacheArray.removeAll(keepCapacity: false)
let mapRegion = self.mapView.region
let minNonClusteredSpan = min(mapRegion.span.latitudeDelta, mapRegion.span.longitudeDelta) / 5
let objects = self.qTree.getObjectsInRegion(mapRegion, minNonClusteredSpan: minNonClusteredSpan) as NSArray
for object in objects {
if object.isKindOfClass(QCluster){
let c = object as? QCluster
let neighbours = self.qTree.neighboursForLocation((c?.coordinate)!, limitCount: NSInteger((c?.objectsCount)!)) as NSArray
for neighbour in neighbours {
let tmp = self.rideArray.filter({
return $0.name == (neighbour.title)!!
})
if find(self.cacheArray, tmp[0]) == nil {
self.cacheArray.insert(tmp[0], atIndex: self.cacheArray.count)
}
}
} else {
let tmp = self.rideArray.filter({
return $0.name == (object.title)!!
})
if find(self.cacheArray, tmp[0]) == nil {
self.cacheArray.insert(tmp[0], atIndex: self.cacheArray.count)
}
}
}
let annotationsToRemove = (self.mapView.annotations as NSArray).mutableCopy() as! NSMutableArray
annotationsToRemove.removeObject(self.mapView.userLocation)
annotationsToRemove.removeObjectsInArray(objects as [AnyObject])
self.mapView.removeAnnotations(annotationsToRemove as [AnyObject])
let annotationsToAdd = objects.mutableCopy() as! NSMutableArray
annotationsToAdd.removeObjectsInArray(self.mapView.annotations)
self.mapView.addAnnotations(annotationsToAdd as [AnyObject])
}
func mapView(mapView: MKMapView!, regionDidChangeAnimated animated: Bool) {
viewChanged = true
self.reloadAnnotations()
}
I apologise for the extensive amount of code, but it all had to be included.
Anyone have any suggestions as to how I can remove the annotations and re-add them once the view appears?
Thanks!
EDIT:
The second issue is now resolved. Here is a bit more detail in regards to the situation and issue:
Basically each annotation represents a ride in a theme park and displays the ride name, current wait time and distance to that ride. At the moment since I am calling setUpMapView() when the view appears, all of the ride annotations are being added to the qTree each time, but are not being removed. This is the issue that I am trying to resolve, but I can't find a way to remove them from the qTree.
MKMapView has the method removeAnnotation:, which will remove a single annotation, and removeAnnotations: which will remove an array of annotations. It also has an annotations property which lets you the current array of annotations. You should be able to select and remove the annotations that you want to remove and then add new ones to replace them.
I think you could try finding user location like this
let locationManager: CLLocationManager = CLLocationManager()
(write this as a class property, not inside any viewDidLoad!)
then u instantly have locationManager coordinates.
self.mapView.removeAnnotations(annotationsToRemove as [AnyObject])
could you print the "annotationsToRemove as [AnyObject]" and tell us what is the content ?
actually all this code is suspicious:
let annotationsToRemove = (self.mapView.annotations as NSArray).mutableCopy() as! NSMutableArray
annotationsToRemove.removeObject(self.mapView.userLocation)
annotationsToRemove.removeObjectsInArray(objects as [AnyObject])
self.mapView.removeAnnotations(annotationsToRemove as [AnyObject])
you define a constant, then edit it with removeObjects and then pass it to removeAnnotations ? strange man, please get as many prints on these lines as you can and tell what they are so we can help