丟棄引腳不推送位置數據使用Swift分析

Question

我有一個地圖和兩個按鈕。地圖自動定位用戶，如果他或她按下按鈕1，它會保存當前位置以進行解析。這工作正常。但是，如果您在地圖上的其他地方導航並放置一個別針，我希望在您點擊按鈕2時將該地點推送到解析，但它只是推動當前位置。

我想我離我很近，我只是需要一點點幫助才能工作。

這裏是我的代碼

self.locationManager.delegate = self 
    self.mapView.delegate = self 
    self.locationManager.desiredAccuracy = kCLLocationAccuracyBest 
    self.locationManager.requestWhenInUseAuthorization() 
    self.locationManager.startUpdatingLocation() 
    self.mapView.showsUserLocation = true 
    let longPress = UILongPressGestureRecognizer(target: self, action: "mapLongPress:") 
    longPress.minimumPressDuration = 1.5 
    self.mapView.addGestureRecognizer(longPress) 

var mapChangedFromUserInteraction = false 

func mapViewRegionDidChangeFromUserInteraction() -> Bool { 
    let view = self.mapView.subviews[0] 
    // Look through gesture recognizers to determine whether this region change is from user interaction 
    if let gestureRecognizers = view.gestureRecognizers { 
     for recognizer in gestureRecognizers { 
      if(recognizer.state == UIGestureRecognizerState.Began || recognizer.state == UIGestureRecognizerState.Ended) { 
       return true 
      } 
     } 
    } 
    return false 
} 


func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) 
{ 
    let location = locations.last 

    let center = CLLocationCoordinate2D(latitude: location!.coordinate.latitude, longitude: location!.coordinate.longitude) 
    let region = MKCoordinateRegion(center: center, span: MKCoordinateSpan(latitudeDelta: 0.01, longitudeDelta: 0.01)) 
    self.mapView.setRegion(region, animated: true) 
    self.locationManager.stopUpdatingLocation() 
} 
func mapLongPress(recognizer: UIGestureRecognizer){ 
    print("its done") 

    let touchedAt = recognizer.locationInView(self.mapView) 
    let touchedAtCoordinate : CLLocationCoordinate2D = mapView.convertPoint(touchedAt, toCoordinateFromView: self.mapView) 
    let newPin = MKPointAnnotation() 
    newPin.coordinate = touchedAtCoordinate 
    mapView.removeAnnotations(mapView.annotations) 
    mapView.showsUserLocation = false 
    mapView.addAnnotation(newPin) 
} 


@IBAction func photographer(sender: AnyObject, forEvent event: UIEvent) { 
    let manager = CLLocationManager() 
    let loc = manager.location!.coordinate 
    let actualLocation = PFGeoPoint(latitude:loc.latitude,longitude:loc.longitude) 
    let object = PFObject(className:"User") 
    object["Location"] = actualLocation 
    object.saveInBackgroundWithBlock { (_success:Bool, _error:NSError?) -> Void in 
     if _error == nil 
     { 
      // yay its saved 
     } 
    } 
} 

@IBAction func buyer(sender: AnyObject, forEvent event: UIEvent) { 

} 

Answer 1

如果我正確理解你的問題，你可以做這樣的事情。

//this would be an optional property that could have a value if there was a pin that was dropped 
var locationsOfPinDrop: PFGeoPoint? 

func mapLongPress(recognizer: UIGestureRecognizer){ 

    let touchedAt = recognizer.locationInView(self.mapView) 
    let touchedAtCoordinate : CLLocationCoordinate2D = mapView.convertPoint(touchedAt, toCoordinateFromView: self.mapView) 
    let newPin = MKPointAnnotation() 
    newPin.coordinate = touchedAtCoordinate 
    mapView.removeAnnotations(mapView.annotations) 
    mapView.showsUserLocation = false 
    mapView.addAnnotation(newPin) 

    //I added this line... It will store the last location that was pressed using the long press. 
    self.locationOfPinDrop = PFGeoPoint(latitude:touchedAtCoordinate.latitude, touchedAtCoordinate:loc.longitude) 
} 

@IBAction func buyer(sender: AnyObject, forEvent event: UIEvent) { 
    if let location = locationOfPinDrop { 
      //there is a coordinate there, it is not nil. 
      let user = PFObject(className:"User") 
      user["Location"] = location 
      user.saveInBackgroundWithBlock { (_success:Bool, _error:NSError?) -> Void in 
       if _error == nil { 
         //This resets the locationOfPinDrop to nil now that it is saved. 
         self.locationOfPinDrop = nil 
       } 
      } 
     } 
} 

我有點難以理解你的問題，但我相信我的答案能解決它。我只需創建一個locatationOfPinDrop的存儲屬性，然後當用戶長按時，locationOfPinDrop被設置爲該座標。現在，當按下按鈕2 buyer時，該位置得到更新。

如果我明白了什麼不對，請告訴我。

Answer 2

建立一個叫做lastPin或您設定爲等於newPin一些財產。然後，當你打電話給買方功能時，基本上你在做另一個功能，除了使用myLocation以外，使用標記的位置。