Marker Clustering Android

Google Map Clustering Android :- 






Overview

This example shows you how to use marker clusters to display a large number of markers on a map. The marker clustering is used when you have the large amount of data and you need to show it to the user.



The google marker clustering provides the better solution to show the large amount of data on the map.Depending upon the different zoom level the individual marker is shown to the user.



Add the following dependency to your app's gradle build file:


   These library provides you re-clustering features and animation.
    

   

compile 'com.google.maps.android:android-maps-utils:0.5+'




Step 1)  You need to create your own model class and implement  the  interface ClusterItem .
                  
Cluster Item interface Override different method .



1.            public LatLng getPosition()     :- To set the position of the marker on the map.

2.            public String getTitle()            :-  To set the title of the marker.

3.            public String getSnippet()       :-  To set the snippet of the marker.




public class SLocationInfo implements ClusterItem, Serializable {

    private double sLongitude;

    private String sCity;

    private double sLatitude;

    public void setSLongitude(double sLongitude) {

        this.sLongitude = sLongitude;

    }

    public double getSLongitude() {

        return sLongitude;

    }

    public void setSCity(String sCity) {

        this.sCity = sCity;

    }

    public String getSCity() {

        return sCity;

    }

    public void setSLatitude(double sLatitude) {

        this.sLatitude = sLatitude;

    }

    public double getSLatitude() {

        return sLatitude;

    }

    @Override

    public String toString() {

        return

                "SLocationInfo{" +

                        "sLongitude = '" + sLongitude + '\'' +

                        ",sCity = '" + sCity + '\'' +

                        ",sLatitude = '" + sLatitude + '\'' +

                        "}";

    }

    @Override

    public LatLng getPosition() {

        return new LatLng(sLatitude, sLongitude);

    }

    @Override

    public String getTitle() {

        return getSCity();

    }

    @Override

    public String getSnippet() {

        return null;

    }
}





Step 2) You need the configure the cluster manager for your application .



public class MyMapActivity{


          private ClusterManager<SLocationInfo> mClusterManager;

            private List<SLocationInfo> mMedia;

  @Override

            protected void onMapReadyToUse(GoogleMap mGoogleMap) {

             mGoogleMap.clear();

             mClusterManager = new ClusterManager<>(this, mGoogleMap);

             mGoogleMap.setOnCameraIdleListener(mClusterManager);  

             mClusterManager.setAnimation(false);

            addAllPin();

            }



private void addAllPin() {
    mGoogleMap.clear();

    mClusterManager.clearItems();

    for (int i = 0; i < mMedia.getMedias().size(); i++) {

            mMedia.getMedias().get(i));

            mClusterManager.addItem(mMedia.getMedias().get(i).getSMLocationInfo());  
      

              // Add items to cluster manager

    }

    mClusterManager.cluster();

}



}

 
Step 3) Get the cluster click and cluster item click .

      

          You need to implement the two different method to get the cluster and cluster item click.

         

             mClusterManager.setOnClusterClickListener(this);    // For Cluster Click

             mClusterManager.setOnClusterItemClickListener(this);  // For Cluster Item Click


public class MyMapActivity implements

            ClusterManager.OnClusterClickListener<SLocationInfo>,

           ClusterManager.OnClusterItemClickListener<SLocationInfo>{


          

            private ClusterManager<SLocationInfo> mClusterManager;
            

           @Override

            protected void onMapReadyToUse(GoogleMap mGoogleMap) {

             mGoogleMap.clear();

             mClusterManager = new ClusterManager<>(this, mGoogleMap);

             mGoogleMap.setOnCameraIdleListener(mClusterManager);  

             mClusterManager.setAnimation(false);

       mClusterManager.setOnClusterClickListener(this);   

             mClusterManager.setOnClusterItemClickListener(this); 

            }




    @Override

    public boolean onClusterClick(Cluster<SLocationInfo> cluster) {

       return false;

    }




  @Override

    public boolean onClusterItemClick(SLocationInfo sLocationInfo) {
           

             return false;

    }

}




Example