Question

我正在尝试为我的googlemaps标记实现群集。目前我有一些自定义标记颜色与API调用，当您单击它们时会触发。加载这些结果后，将打开一个底图，其中包含该标记的特定信息。

我希望保持相同的功能（自定义标记/ clickListeners / radius围绕标记），但在缩小时添加群集。我看了不同的消息来源寻求帮助：

Android cluster and marker clicks

Android marker-clustering

MarkerManager.java

但我不确定如何为群集项实现自定义标记和侦听器。我能够使用标准标记获得没有clicklisteners的集群。以下是一些插图图片：

这是我目前的情况（我想聚集这些标记）。如您所见，当我点击标记

时会弹出底部工作表

这是我目前能够做的，但我希望将它与之前的图片结合起来

以下是我的地图片段代码的重要部分，（Point类确实实现了ClusterItem接口）：

private Map<Marker, Point> retailerInfo = new HashMap<>();

    private void markGeofencesOnMap() {
        new GeofenceAreasRequest().getAllAreas(new GeofenceAreasCallback() {
            @Override
            public void onAreasLoaded(List<Point> points) {
                for (final Point point : points) {
                    markerForGeofence(point);
                    drawRadius(point);
                }
            }
            @Override
            public void failedOnAreasLoaded(int message) {
                Snackbar.make(coordinatorLayout, R.string.failed_loading_areas, Snackbar.LENGTH_LONG).show();
            }
        });
    }

    private void markerForGeofence(Point point) {
        LatLng latLng = new LatLng(point.getLatitude(), point.getLongitude());
        MarkerOptions markerOptions = new MarkerOptions()
                .position(latLng)
                .flat(true)
                .title(point.getTitle())
                .icon(BitmapDescriptorFactory.defaultMarker(195));
//        markerManager.getCollection("markerCollection").addMarker(markerOptions);
//        markerManager.getCollection("markerCollection").setOnMarkerClickListener(this);
//        mClusterManager.addItem(point);
        geoFenceMarker = googleMap.addMarker(markerOptions);
        retailerInfo.put(geoFenceMarker, point);
    }

    private void drawRadius(Point point) {
        CircleOptions circleOptions = new CircleOptions()
                .center(geoFenceMarker.getPosition())
                .strokeColor(Color.argb(50, 70, 70, 70))
                .fillColor(Color.argb(100, 150, 150, 150))
                .radius(point.getRadius());
        googleMap.addCircle(circleOptions);
    }

    private void googleMapSettings() {
        int permissionCheck = ContextCompat.checkSelfPermission(getActivity(),
                Manifest.permission.ACCESS_FINE_LOCATION);
        if (permissionCheck == PackageManager.PERMISSION_GRANTED) {
            googleMap.setMyLocationEnabled(true);
        } else {
            SystemRequirementsChecker.checkWithDefaultDialogs(getActivity());
        }
        googleMap.getUiSettings().setZoomControlsEnabled(true);
        CameraPosition cameraPosition = new CameraPosition.Builder().target(getLastLocation()).zoom(12).build();
        googleMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
        googleMap.setOnMapClickListener(this);
//        markerManager = new MarkerManager(googleMap);
//        markerManager.newCollection("markerCollection");
//        mClusterManager = new ClusterManager<Point>(getActivity(), googleMap );//, markerManager);
//        googleMap.setOnMarkerClickListener(mClusterManager); //markerManager);
        googleMap.setOnCameraIdleListener(mClusterManager);
        googleMap.setOnMarkerClickListener(this);
    }

    @Override
    public boolean onMarkerClick(Marker marker) {
        if (retailerInfo != null) {
            String retailerId = retailerInfo.get(marker).getRetailer();
            new RetailersRequest().getRetailer(retailerId, new RetailersCallback() {
                @Override
                public void onRetailersLoad(List<Retailer> retailers) {
                    for (final Retailer retailer : retailers) {
                        mMapRetailerName.setText(retailer.getName());
                        mMapRetailerStreet.setText(retailer.getStreet());
                        mMapRetailerHouseNr.setText(retailer.getHousenumber());
                        mMapRetailerPostalCode.setText(retailer.getPostalCode());
                        mMapRetailerCity.setText(retailer.getCity());
                    }
                    bottomSheet.setVisibility(View.VISIBLE);
                    mBottomSheetBehavior.setPeekHeight(400);
                    mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
                }

                @Override
                public void failedOnRetailersLoaded(int code) {
                    Snackbar.make(coordinatorLayout, getString(R.string.failed_loading_retailers) + code, Snackbar.LENGTH_LONG).show();
                }
            });
            CameraPosition cameraPosition = new CameraPosition.Builder().target(marker.getPosition()).zoom(14).build();
            googleMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
        }
        return true;
    }

    @Override
    public void onMapClick(LatLng latLng) {
        bottomSheet.setVisibility(View.GONE);
    }

    @Override
    public void onMapReady(GoogleMap googleMap) {
        this.googleMap = googleMap;
        googleMapSettings();
        markGeofencesOnMap();
    }

我希望有人可以帮助我朝着正确的方向前进。 THX！

Answer 1

好的，经过一些更多的追踪和错误后，我想我已经把它整理好了。我所要做的就是将自定义DefaultClusterRenderer附加到我的clusterManager。在mapfragment中，我可以使用onClusterItemClick来处理标记点击。我仍然遇到的一个问题是放大和缩小时圆圈都没有正确渲染。

private void markGeofencesOnMap() {
    new GeofenceAreasRequest().getAllAreas(new GeofenceAreasCallback() {
        @Override
        public void onAreasLoaded(List<Point> points) {
            for (final Point point : points) {
                mClusterManager.addItem(point);
            }
        }
    });
}

private void googleMapSettings() {        
    mClusterManager = new ClusterManager<Point>(getActivity(), googleMap );
    // attach custom renderer behaviour
    mClusterManager.setRenderer(new OwnPointRendered(getActivity().getApplicationContext(), googleMap, mClusterManager)); 
    mClusterManager.setOnClusterItemClickListener(this);
    googleMap.setOnMarkerClickListener(mClusterManager);
    googleMap.setOnCameraIdleListener(mClusterManager);
}

@Override
public boolean onClusterItemClick(ClusterItem clusterItem) {
    // cast ClusterItem to my Point class to handle marker clicks
    Point retailer = (Point) clusterItem;
    String retailerId = retailer.getRetailer();
    return true;
}

OwnPointRendered.class

public class OwnPointRendered extends DefaultClusterRenderer<Point> {
private final GoogleMap map;
private List<Circle> circleList = new ArrayList<>();

public OwnPointRendered(Context context, GoogleMap map,
                        ClusterManager<Point> clusterManager) {
    super(context, map, clusterManager);
    this.map = map;
}

@Override
protected void onBeforeClusterItemRendered(Point item, MarkerOptions markerOptions) {
    markerOptions.flat(true);
    markerOptions.icon(BitmapDescriptorFactory.defaultMarker(195));
    drawRadius(item);
    super.onBeforeClusterItemRendered(item, markerOptions);
}

@Override
protected void onClusterRendered(Cluster<Point> cluster, Marker marker) {
    super.onClusterRendered(cluster, marker);
    for (Circle circle : circleList) {
        circle.remove();
    }
    circleList.clear();
}

private void drawRadius(Point point) {
    CircleOptions circleOptions = new CircleOptions()
            .center(point.getPosition())
            .strokeColor(Color.argb(50, 70, 70, 70))
            .fillColor(Color.argb(100, 150, 150, 150))
            .radius(point.getRadius());
    Circle circle = map.addCircle(circleOptions);
    circleList.add(circle);
}

Android Google为clusterItems映射markerClickListener

1 个答案: