在iOS swift中，当集合视图滑动时如何调用地图注释？

在我的项目中，我使用MK map和uicollection视图。在地图视图中，显示基于用户当前位置的最近用户朋友位置地图注释。在集合视图中，与用户朋友相同的位置名称和距离显示在UICollection视图中。（注：对于收藏，我使用了UPCarouselFlowLayout cocopod图书馆）

在这里，我想突出显示距离用户当前位置最近的地图注释标记，并在地图中调用和选择wile SWING集合地图注释

下面是我为最近的用户朋友位置和集合视图尝试的代码：

func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
    if annotation is MKUserLocation {
        let pin = mapView.view(for: annotation) ?? MKAnnotationView(annotation: annotation, reuseIdentifier: nil)
        pin.image = UIImage(named: "carIcon")
        userPinView = pin
        return pin

    }

    let annotationIdentifier = "AnnotationIdentifier"
    var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: annotationIdentifier)

    if annotationView == nil {
        annotationView = MKAnnotationView(annotation: annotation, reuseIdentifier: annotationIdentifier)
    }
    else {
        annotationView!.annotation = annotation
    }

    print("Get parking array count",parkingTypeArray.count)
    if parkingTypeArray.count > 0 {

        print("parking ty \(parkingTypeArray)")
        //

        for cameraa in parkingTypeArray.enumerated() {

            if cameraa.element == "Free" {

                let pinImage = UIImage(named: "free")
                annotationView!.image = pinImage

            }else if cameraa.element == "Paid" {

                let pinImage = UIImage(named: "paid")
                annotationView!.image = pinImage

            }
        }
    }

    return annotationView
  }

下面是集合视图的代码：

     //UICollection view - Location for parking car and street name
     extension HomeViewController : UICollectionViewDataSource, UICollectionViewDelegate {

       func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
    return cameraDetails.count
    }

       func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {

         let cell = nearestCurrentLocationCollection.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! nearestLocationCollectionViewCell

    if self.cameraImageArray.count > 0 {

        cell.locationImage.sd_setImage(with: URL(string: 
      self.cameraImageArray[indexPath.row]))
        print("get location image",URL(string: 
        self.cameraImageArray[indexPath.row]))
    }

    if self.cameraDetails.count > 0 {

        cell.locationName.text = self.cameraDetails[indexPath.row]

    }
     //            cell.locationDistance.text = locationDistance[indexPath.row]

     if distanceArray.count > 0 {

        cell.locationDistance.text = String(format: " Distance : %.2f ", distanceArray[indexPath.row]/1000)

    }

      //            self.activityIndicator.stopAnimating()
      //            self.activityIndicator.isHidden = true

        return cell
    }

      func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
     moveMapPage()
       }

     fileprivate var pageSize: CGSize {
    let layout = self.nearestCurrentLocationCollection.collectionViewLayout as! UPCarouselFlowLayout
    var pageSize = layout.itemSize
    if layout.scrollDirection == .horizontal {
        pageSize.width += layout.minimumLineSpacing
    } else {
        pageSize.height += layout.minimumLineSpacing
    }
    return pageSize
    }

   func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
    let layout = nearestCurrentLocationCollection.collectionViewLayout as! UPCarouselFlowLayout
    let pageSide = (layout.scrollDirection == .horizontal) ? self.pageSize.width : self.pageSize.height
    let offset = (layout.scrollDirection == .horizontal) ? scrollView.contentOffset.x : scrollView.contentOffset.y
    currentPage = Int(floor((offset - pageSide / 2) / pageSide) + 1)
    print("currentpage::::\(self.currentPage)")


        if let selectedAnnotation = mapView.selectedAnnotations.first {
            // Ignore if correspondent annotation is already selected
            if 
   selectedAnnotation.isEqual(self.mapView.annotations[currentPage]) {

    self.mapView.selectAnnotation(self.mapView.annotations[currentPage], animated: true)
            }
        }


   }


 }

---

像这样试试它对我有用

UICollectionView

委托方法

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {

    for annotations_item in mapView.annotations{

       if annotations_item.title == Arr_Map_Data[indexPath.row].Title{
                 self.mapView.selectAnnotation(annotations_item, animated: true)
       }

    }
}

func mapView(_ mapView: MKMapView, didSelect view: MKAnnotationView) {

    // first ensure that it really is an EventAnnotation:
    // Note :- Here get your Annotation I used MyPointAnnotation custom class that's why use that

    if let eventAnnotation = view.annotation as? MyPointAnnotation {

            if let index = self.Arr_Map_Comparables.index(of: eventAnnotation.obj!){
                let indexPath = IndexPath(row: index, section: 0)
                collectionView.scrollToItem(at: indexPath, at: .top, animated: true)
            }
    }
}

地图视图委托方法

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {

    for annotations_item in mapView.annotations{

       if annotations_item.title == Arr_Map_Data[indexPath.row].Title{
                 self.mapView.selectAnnotation(annotations_item, animated: true)
       }

    }
}

func mapView(_ mapView: MKMapView, didSelect view: MKAnnotationView) {

    // first ensure that it really is an EventAnnotation:
    // Note :- Here get your Annotation I used MyPointAnnotation custom class that's why use that

    if let eventAnnotation = view.annotation as? MyPointAnnotation {

            if let index = self.Arr_Map_Comparables.index(of: eventAnnotation.obj!){
                let indexPath = IndexPath(row: index, section: 0)
                collectionView.scrollToItem(at: indexPath, at: .top, animated: true)
            }
    }
}

---

除了当前页面之外，您是否还获得了任何其他注释信息，如标题或其他信息？没有。。我没有得到任何错误。以上是否正确？@PvDev从您要选择批注动画的位置，我必须使用did selected方法执行此操作。在滑动单元格时，此操作是否适用于集合视图。对于集合视图滑动手势，请尝试此“抱歉，不要集合滑动”。滚动集合视图时，所选索引应选择地图annotation@PvDev您想在选定的集合视图单元格上显示选定的地图批注，并滚动到选定地图批注的集合视图单元格，对吗？