ios - How to save Pin Annotation once app is closed (Swift) -

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currently, app pins location , location stores so:

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;     locationsdefaults.append(carinitiallocation);     carinitialcoordinate = coordinate;      self.map.setregion(region, animated: true); }

where locationsdefaults array store location of pin.

i use nsuserdefaults, i'm not sure how i'd doesn't except non ns data. guideline/structure in swift appreciated!

you can save nsdata nsuserdefaults. need convert cllocation object nsdata using nskeyedarchiver method archiveddatawithrootobject follow:

// saving cllocation object let locationdata = nskeyedarchiver.archiveddatawithrootobject(carinitiallocation) nsuserdefaults.standarduserdefaults().setobject(locationdata, forkey: "locationdata")  // loading if let loadeddata = nsuserdefaults.standarduserdefaults().dataforkey("locationdata") {     if let loadedlocation = nskeyedunarchiver.unarchiveobjectwithdata(loadeddata) as? cllocation {         println(loadedlocation.coordinate.latitude)         println(loadedlocation.coordinate.longitude)     } }

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