ios - Storing CLLocation and keeping annotation -

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my app has 3 tabs, tab pinning location, , detailview of pinned location on second tab. trying save location of pin nsuserdefaults. location stay pinned upon reloading app, , therefore detail view still display detail view of pinned location. here have far,

func locationmanager(manager: cllocationmanager!, didupdatelocations locations: [anyobject]!) {     // find location of user     var userlocation:cllocation = locations[0] as! cllocation     var latitude = userlocation.coordinate.latitude     var longitude = userlocation.coordinate.longitude     var latdelta:cllocationdegrees = 0.01     var longdelta: cllocationdegrees = 0.01     var span: mkcoordinatespan = mkcoordinatespanmake(latdelta, longdelta)     var location:mkuserlocation = currentlocation;     var region: mkcoordinateregion = mkcoordinateregionmake(location.coordinate, span)     var coordinate:cllocationcoordinate2d = cllocationcoordinate2dmake(latitude, longitude);     carinitiallocation = userlocation;     let locationdata = nskeyedarchiver.archiveddatawithrootobject(carinitiallocation);     nsuserdefaults.standarduserdefaults().setobject(locationdata, forkey: "locationdata");     carinitialcoordinate = coordinate;      self.map.setregion(region, animated: true); }   override func viewdidload() {      super.viewdidload()     if let loadeddata = nsuserdefaults.standarduserdefaults().dataforkey("locationdata") {         if let loadedlocation = nskeyedunarchiver.unarchiveobjectwithdata(loadeddata) as? cllocation {             println(loadedlocation.coordinate.latitude);             println(loadedlocation.coordinate.longitude);             var annotation = mkpointannotation()             annotation.coordinate = loadedlocation.coordinate             annotation.title = title             self.map.addannotation(annotation)          }     }      map.addannotations(artworks)     map.delegate = self;     manager.delegate = self;     manager.desiredaccuracy = kcllocationaccuracybest;     manager.requestwheninuseauthorization();     manager.startupdatinglocation();     self.map.showsuserlocation = true;     currentlocation = map.userlocation; }

i want pinlocation button deactivated once user has pinned location once. try so:

@ibaction func pinlocationbutton(sender: anyobject) {     // add location array, can retrieved , put temporary storage     //places.append(["name":title,"lat":"\(newcoordinate.latitude)","lon":"\(newcoordinate.longitude)"])     if let loadeddata = nsuserdefaults.standarduserdefaults().dataforkey("locationdata") {         if let loadedlocation = nskeyedunarchiver.unarchiveobjectwithdata(loadeddata) as? cllocation {             println(loadedlocation.coordinate.latitude);             println(loadedlocation.coordinate.longitude);             pinlocationbutton.enabled = false;          }     }       var location = carinitiallocation     var coordinate = carinitialcoordinate      clgeocoder().reversegeocodelocation(manager.location, completionhandler: { (placemarks, error) -> void in         var title = ""         if (error == nil) {             if let p = clplacemark(placemark: placemarks?[0] as! clplacemark) {                  var subthoroughfare:string = ""                 var thoroughfare:string = ""                  if p.subthoroughfare != nil {                      subthoroughfare = p.subthoroughfare                 }                 if p.thoroughfare != nil {                      thoroughfare = p.thoroughfare                  }                 completeaddress = self.displaylocationinfo(p);                 title = "\(subthoroughfare) \(thoroughfare)"             }         }                     // annotation, i.e pins      var annotation = mkpointannotation()     annotation.coordinate = coordinate     annotation.title = title     self.map.addannotation(annotation)        // nsuserdefaults.standarduserdefaults().setobject(places, forkey: "places")     }) }

then, in detailvc attempt reverse geocode pinned location, defaulting current location.. don't understand why here's code:

super.viewdidload()      addresslabel.font = uifont(name: addresslabel.font.fontname, size: 18)     smallmapview.delegate = self;     locationmanager.delegate = self;     smallmapview.maptype = mkmaptype.hybrid;     locationmanager.desiredaccuracy = kcllocationaccuracybest;     locationmanager.requestwheninuseauthorization();     locationmanager.startupdatinglocation();     smallmapview.zoomenabled = true;     smallmapview.rotateenabled = true;      if let loadeddata = nsuserdefaults.standarduserdefaults().dataforkey("locationdata") {         if let loadedlocation = nskeyedunarchiver.unarchiveobjectwithdata(loadeddata) as? cllocation {             println(loadedlocation.coordinate.latitude);             println(loadedlocation.coordinate.longitude);              clgeocoder().reversegeocodelocation(loadedlocation, completionhandler: { (placemarks, error) -> void in                 var title = "";                 var subtitle = "";                 var locality = "";                 if(error == nil) {                     if let placemark = clplacemark(placemark: placemarks?[0] as! clplacemark) {                         var subthoroughfare:string = "";                         var thoroughfare:string = "";                         var locality:string = "";                         var postalcode:string = "";                         var administrativearea:string = "";                         var country:string = "";                          if (placemark.subthoroughfare != nil) {                             subthoroughfare = placemark.subthoroughfare;                         }                         if(placemark.thoroughfare != nil) {                             thoroughfare = placemark.thoroughfare;                         }                         if(placemark.locality != nil) {                             locality = placemark.locality;                         }                         if(placemark.postalcode != nil) {                             postalcode = placemark.postalcode;                         }                         if(placemark.administrativearea != nil) {                             administrativearea = placemark.administrativearea;                         }                         if(placemark.country != nil) {                             country = placemark.country;                         }                         println("viewcontroller placmark data:");                         println(locality);                         println(postalcode);                         println(administrativearea);                         println(country);                          title = " \(subthoroughfare) \(thoroughfare) \n \(locality), \(administrativearea) \n \(postalcode) \(country)";                         subtitle = " \(subthoroughfare) \(thoroughfare)";                         println(title);                         self.addresslabel.text = title;                     }                 }                 var latitude = loadedlocation.coordinate.latitude;                 var longitude = loadedlocation.coordinate.longitude;                 var latdelta:cllocationdegrees = 0.001;                 var longdelta:cllocationdegrees = 0.001;                  var span: mkcoordinatespan = mkcoordinatespanmake(latdelta, longdelta);                 var overallloc = cllocationcoordinate2dmake(latitude, longitude);                 var region:mkcoordinateregion = mkcoordinateregionmake(overallloc, span);                 var annotation = mkpointannotation();                 annotation.coordinate = loadedlocation.coordinate;                 annotation.title = subtitle;                 self.smallmapview.addannotation(annotation);                 self.smallmapview.setregion(region, animated: true)              })          }     }   }

in pinlocationbutton function, use manager.location wrong, should use 

clgeocoder().reversegeocodelocation(location, completionhandler: { (placemarks, error) -> void in     var title = ""     if (error == nil) {     // ....

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