Question

我在这里有一个基本设置的地图，我试图让引脚动画一滴...就像你按下＆amp;按住地图应用程序并将图钉放到该位置。因此，当我进入视图时，所有引脚都会动画到它们的位置，我真的不知道该怎么做。如果有人能引导我使用正确的代码，我需要添加它将会很棒！

以下是我现有的代码：

   class FirstViewController: UIViewController,MKMapViewDelegate, CLLocationManagerDelegate{



@IBOutlet weak var mapView: MKMapView!





    let locationManager = CLLocationManager()

    override func viewDidLoad() {
        super.viewDidLoad() 

        self.locationManager.delegate = self
        self.locationManager.desiredAccuracy = kCLLocationAccuracyBest
        self.locationManager.requestWhenInUseAuthorization()
        self.locationManager.startUpdatingLocation()
        self.mapView.showsUserLocation = true 


   let LitzmanLocation = CLLocationCoordinate2DMake(32.100668,34.775192)
        // Drop a pin
        let Litzman = MKPointAnnotation()
        Litzman.coordinate = LitzmanLocation
        Litzman.title = "Litzman Bar"
        Litzman.subtitle = "Nemal Tel Aviv St'"
        mapView.addAnnotation(Litzman)}

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    //Dispose of resources that can be re created.

        }

    //Mark:

    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: 0.1, longitudeDelta: 0.1))

        self.mapView.setRegion(region, animated: true)

        self.locationManager.stopUpdatingLocation()
    }

    func locationManager(manager: CLLocationManager, didFailWithError error: NSError)
    {
        print("Errors: " + error.localizedDescription)
    }

Answer 1

在此之前，我没有维持任何标准，我只有一个解决方案，我正在通过解决其他问题来学习 swift 和 mapKit 。

这里我给出了一些示例代码，并通过对象库添加了 mapView 和 UITapGestureRecognizer 。

用于添加注释，例如从顶部删除

pinView!.animatesDrop = true

viewForAnnotation 委派方法中的

。当您在地图上点按时， addAnnotation 方法会调用以添加注释。

用于设置所有注释的动画

我已经实施了 regionDidChangeAnimated 委托方法，只需删除并重新添加所有注释。

import UIKit
import MapKit
import CoreLocation

class MapViewController: UIViewController,  MKMapViewDelegate, CLLocationManagerDelegate {

@IBOutlet weak var mapView: MKMapView!

let locationManager = CLLocationManager()

override func viewDidLoad() {
    super.viewDidLoad()
    print("viewDidLoad")
    self.mapView.delegate = self
    self.locationManager.delegate = self
    self.locationManager.requestWhenInUseAuthorization()
    self.locationManager.startUpdatingLocation()
    self.mapView.showsUserLocation = true

    let locationData = [
        //Walker Art Gallery
        ["name": "Walker Art Gallery",
            "latitude": 12,
            "longitude": 79],
        //Liver Buildings
        ["name": "Liver Buildings",
            "latitude": 13,
            "longitude": 77],
        //St George's Hall
        ["name": "St George's Hall",
            "latitude": 14,
            "longitude": 77]
    ]
    var annotations = [MKPointAnnotation]()
    for each in locationData {
        let latitude = CLLocationDegrees(each["latitude"] as! Double)
        let longitude = CLLocationDegrees(each["longitude"] as! Double)
        let coordinate = CLLocationCoordinate2D(latitude: latitude, longitude: longitude)
        let name = each["name"] as! String
        let annotation = MKPointAnnotation()
        annotation.coordinate = coordinate
        annotation.title = "\(name)"
        annotations.append(annotation)
    }
    mapView.addAnnotations(annotations)
}

func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
    print("viewForAnnotation \(annotation.title)")
    if annotation is MKUserLocation {
        return nil
    }
    let reuseID = "pin"
    var pinView = mapView.dequeueReusableAnnotationViewWithIdentifier(reuseID) as? MKPinAnnotationView
    if(pinView == nil) {
        pinView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: reuseID)
        pinView!.canShowCallout = true
        pinView!.animatesDrop = true
    }
    return pinView
}

@IBAction func addAnnotation(sender: UITapGestureRecognizer) {
    if sender.state == .Ended {
        let location = sender.locationInView(mapView)
        let coordinate = mapView.convertPoint(location,toCoordinateFromView: mapView)

        let annotation = MKPointAnnotation()
        annotation.coordinate = coordinate
        mapView.addAnnotation(annotation)
    }
}

func mapView(mapView: MKMapView, regionDidChangeAnimated animated: Bool) {
    print("regionDidChangeAnimated")
    let annotations = self.mapView.annotations
    self.mapView.removeAnnotations(annotations)
    self.mapView.addAnnotations(annotations)
} 
}

修改

对于viewDidLoad方法中的情况，请添加此

self.mapView.delegate = self

要注释MKAnnotation，您必须实现以下委托方法

//Annotation view func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? { if annotation is MKUserLocation { return nil } let reuseID = "pin" var pinView = mapView.dequeueReusableAnnotationViewWithIdentifier(reuseID) as? MKPinAnnotationView if(pinView == nil) { pinView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: reuseID) pinView!.canShowCallout = true pinView!.animatesDrop = true } return pinView }

在注释所有注释之后，您必须在委托方法下面实现。

func mapView(mapView: MKMapView, regionDidChangeAnimated animated: Bool) { let annotations = self.mapView.annotations self.mapView.removeAnnotations(annotations) self.mapView.addAnnotations(annotations) }

我假设您知道如何在地图上添加注释...

<强> EDIT2

这就是你需要我的朋友。

在viewDidLoad中添加一个通知观察者，如下所示。

NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(didBecomeActive), name: UIApplicationDidBecomeActiveNotification, object: nil)

最后将 regionDidChangeAnimated 更改为 didBecomeActive ，如下所示

func didBecomeActive() { let annotations = self.mapView.annotations self.mapView.removeAnnotations(annotations) self.mapView.addAnnotations(annotations) }

Answer 2

在目标C中：

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation
 {

if ([annotation isKindOfClass:[MKUserLocation class]])
    return nil;

// Handle any custom annotations.
if ([annotation isKindOfClass:[MKPointAnnotation class]])
{
    // Try to dequeue an existing pin view first.
    MKPinAnnotationView *pinView = (MKPinAnnotationView*)[mapView dequeueReusableAnnotationViewWithIdentifier:@"CustomPinAnnotationView"];
    if (!pinView)
    {
        // If an existing pin view was not available, create one.
        pinView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"CustomPinAnnotationView"];
        pinView.canShowCallout = YES;
        pinView.animatesDrop = YES;
        pinView.pinTintColor = [UIColor blueColor];
    } else {
        pinView.annotation = annotation;
    }
    return pinView;
}
return nil;
}

如何使地图引脚动画下降？ Swift 2.2 IOS 9

2 个答案: