[swift] IOS地圖運用 (4) 如何區分是User Location與Annotation

• 接著上一篇,如果這時候我們再把mapkit view的user location打開來試試看,結果會發現user location的點被吃掉了,原因是我們改寫了viewForAnnotation,所有的點都會變成我們客製座標的樣式
  
• 所以我們在viewForAnnotation補上判斷,讓user location不會被改變樣式 ```swift
  func mapView(mapView: MKMapView!, viewForAnnotation annotation: MKAnnotation!) -> MKAnnotationView! {

    if(annotation is MKUserLocation){
        //return nil表示用預設值那個藍色發光圓形圖
        return nil;
    }
    var ann : MyAnnotation? = mapView.dequeueReusableAnnotationViewWithIdentifier("CustomerPoint") as? MyAnnotation;
    if(ann == nil){
        ann = MyAnnotation(annotation: annotation, reuseIdentifier: "CustomerPoint");
        ann?.canShowCallout = true;
    }
    ann?.DrawCustomerView();
    ann?.annotation = annotation;
    return ann;
  

  }

```
結果如下,user location又出來摟～