如何將MKMapView的用戶位置藍點更改爲選擇的圖像？

Question

是否可以將指示用戶在MKMapView中的位置的blue dot更改爲圖像？例如一輛小車或任何.png圖像？

Answer 1

在viewForAnnotation：MKMapViewDelegate的方法也許你會爲這樣的代碼。

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

    if (annotation == mapView.userLocation) return nil; 
    ... 

回到零如果註釋是用戶位置讓的MapView顯示藍點&圈動畫。爲了顯示我們的用戶位置的自定義註釋，只需刪除行return nil;並在那裏進行自定義。

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

    static NSString* AnnotationIdentifier = @"Annotation"; 
    MKPinAnnotationView *pinView = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:AnnotationIdentifier]; 

    if (!pinView) { 

     MKPinAnnotationView *customPinView = [[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:AnnotationIdentifier] autorelease]; 
     if (annotation == mapView.userLocation){ 
      customPinView.image = [UIImage imageNamed:@"myCarImage.png"]; 
     } 
     else{ 
      customPinView.image = [UIImage imageNamed:@"mySomeOtherImage.png"]; 
     } 
     customPinView.animatesDrop = NO; 
     customPinView.canShowCallout = YES; 
     return customPinView; 

    } else { 

     pinView.annotation = annotation; 
    } 

    return pinView; 
} 

Answer 2

好，這裏是斯威夫特版本：

func mapView(mapView: MKMapView!, viewForAnnotation annotation: MKAnnotation!) -> MKAnnotationView! { 

    let identifier = "User" 

     var annotationView = mapView.dequeueReusableAnnotationViewWithIdentifier(identifier) 

     if annotationView == nil{ 
      annotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: identifier) 
      annotationView.canShowCallout = true 

     } else { 
      annotationView.annotation = annotation 
     } 

    annotationView.image = UIImage(named: "image") 

    return annotationView 

} 

Answer 3

這裏是雨燕2.0的版本中，你可能有多個引腳。

在這段代碼中，CustomAnnotation只是一個MKAnnotation子類。基本上，如果註釋不是您的自定義類中的一種，那麼它的用戶位置引腳。

func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? 
{ 
    // This is false if its a user pin 
    if(annotation.isKindOfClass(CustomAnnotation) == false) 
    { 
     let userPin = "userLocation" 
     if let dequeuedView = _view.mapView().dequeueReusableAnnotationViewWithIdentifier(userPin) 
     { 
      return dequeuedView 
     } else 
     { 
      let mkAnnotationView:MKAnnotationView = MKAnnotationView(annotation: annotation, reuseIdentifier: userPin) 
      mkAnnotationView.image = UIImage(named: C_GPS.ROUTE_WALK_ICON_NAME) 
      let offset:CGPoint = CGPoint(x: 0, y: -mkAnnotationView.image!.size.height/2) 
      mkAnnotationView.centerOffset = offset 

      return mkAnnotationView 
     } 

    } 

    let annotation = annotation as? CustomAnnotation 
    if(annotation == nil) 
    { 
     return nil 
    } 

    let endPointsIdentifier = "endPoint" 
    if let dequeuedView = _view.mapView().dequeueReusableAnnotationViewWithIdentifier(endPointsIdentifier) 
    { 
     dequeuedView.image = annotation!.uiimage 
     return dequeuedView 
    } else 
    { 
     let mkAnnotationView:MKAnnotationView = MKAnnotationView(annotation: annotation, reuseIdentifier: endPointsIdentifier) 
     mkAnnotationView.image = annotation!.uiimage 
     let offset:CGPoint = CGPoint(x: 0, y: -mkAnnotationView.image!.size.height/2) 
     mkAnnotationView.centerOffset = offset 

     let gesture = UITapGestureRecognizer(target: self, action: "routeTouched:") 
     mkAnnotationView.addGestureRecognizer(gesture) 

     return mkAnnotationView 
    } 
} 

Answer 4

是這個改變當前位置的藍點???

func mapView(mapView: MKMapView!, viewForAnnotation annotation: MKAnnotation!) -> 
MKAnnotationView! { 

let identifier = "User" 

    var annotationView = mapView.dequeueReusableAnnotationViewWithIdentifier(identifier) 

    if annotationView == nil{ 
     annotationView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: identifier) 
     annotationView.canShowCallout = true 

    } else { 
     annotationView.annotation = annotation 
    } 

    annotationView.image = UIImage(named: "image") 

    return annotationView 

} 

Answer 5

請嘗試這樣的事情。它在Xcode 7和Swift 2中爲我工作。

func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? { 

    // want to show a custom image if the annotation is the user's location. 
    guard !annotation.isKindOfClass(MKUserLocation) else { 
     let annotationView = MKAnnotationView(annotation: annotation, reuseIdentifier: "userLocation") 
     annotationView.image = UIImage(named: "icon_coordinates_self") 
     return annotationView 
     //return nil 
    } 

    // for other annotation except current location 
    let annotationIdentifier = "AnnotationIdentifier" 

    var annotationView: MKAnnotationView? 
    if let dequeuedAnnotationView = mapView.dequeueReusableAnnotationViewWithIdentifier(annotationIdentifier) { 
     annotationView = dequeuedAnnotationView 
     annotationView?.annotation = annotation 
    } 
    else { 
     let av = MKAnnotationView(annotation: annotation, reuseIdentifier: annotationIdentifier) 
     av.rightCalloutAccessoryView = UIButton(type: .DetailDisclosure) 
     annotationView = av 
    } 

    if let annotationView = annotationView { 
     // Configure your annotation view here 
     annotationView.canShowCallout = true 
     annotationView.image = UIImage(named: "Annotation_map") 
    } 

    return annotationView 
}