Clustering on Google Map V2 Part-2

12:03 PM Clustering , Google Map v2 5 Comments

Getting started : 

• It's easy to add Clusterkraf to your app. Add the Clusterkraf library folder as an Android project to your Eclipse/ADT workspace, and reference it from your app as a library project.
• Clusterkraf provides an InputPoint class which holds a LatLng position and an Object tag. You just need to construct an ArrayList<InputPoint> object based on your model objects.
  
  
  

  public class YourActivity extends FragmentActivity {
      YourMapPointModel[] yourMapPointModels = new YourMapPointModel[] { new YourMapPointModel(new LatLng(0d, 1d) /* etc */ ) };
      ArrayList inputPoints;
  
      private void buildInputPoints() {
          this.inputPoints = new ArrayList(yourMapPointModels.length);
          for (YourMapPointModel model : this.yourMapPointModels) {
              this.inputPoints.add(new InputPoint(model.latLng, model));
          }
      }
  }
  

• When your GoogleMap is initialized and your ArrayList<InputPoint> is built, you can then initialize Clusterkraf.

  // YourActivity
  
      Clusterkraf clusterkraf;
  
      private void initClusterkraf() {
          if (this.map != null && this.inputPoints != null && this.inputPoints.size() > 0) {
              com.twotoasters.clusterkraf.Options options = new com.twotoasters.clusterkraf.Options();
              // customize the options before you construct a Clusterkraf instance
              this.clusterkraf = new Clusterkraf(this.map, this.options, this.inputPoints);
          }
      }
  

Advance Options :

1. To set any type of interpolator in cluster animation :

   options.setTransitionInterpolator(interpolator); 
   /* Types : AccelerateDecelerateInterpolator, AccelerateInterpolator, AnticipateInterpolator,
   AnticipateOvershootInterpolator, BounceInterpolator, DecelerateInterpolator,
   LinearInterpolator, OvershootInterpolator */
   

2. Clusterkraf calculates whether InputPoint objects should join a cluster based on their pixel proximity. If you want to offer your app on devices with different screen densities, you should identify a Device Independent Pixel measurement and convert it to pixels based on the device's screen density at runtime.

   options.setPixelDistanceToJoinCluster(dipDistanceToJoinCluster);
   

3. To set zoom to bound animation duration :
   
   

   options.setZoomToBoundsAnimationDuration(zoomToBoundsAnimationDuration);
   

4. To set showInfoWindow animation duration :
   
   

   options.setShowInfoWindowAnimationDuration(showInfoWindowAnimationDuration);
   

5. To set behavior of marker click :
   
   

   options.setSinglePointClickBehavior(singlePointClickBehavior);
   /* select from two types SHOW_INFO_WINDOW, NO_OP. */
   

6. To set behavior of cluster click :
   
   

   options.setClusterClickBehavior(this.options.clusterClickBehavior);
   /* select from three types ZOOM_TO_BOUNDS, SHOW_INFO_WINDOW, NO_OP. */
   

7. To set behavior of cluster info window click :
   
   

   options.setClusterInfoWindowClickBehavior(this.options.clusterInfoWindowClickBehavior);
   /* select from three types ZOOM_TO_BOUNDS, HIDE_INFO_WINDOW, NO_OP. */
   

8. To set padding from window sides after zooming :
   
   

   options.setZoomToBoundsPadding(pixels);
   /* When zooming to the bounds of a marker's backing ClusterPoint, zoom until
    * all of the points are at least this far from the edge of the GoogleMap's
    * bounds
    */
   

9. To set marker click listner :
   
   

   options.setOnMarkerClickDownstreamListener(new OnMarkerClickDownstreamListener(new OnMarkerClickDownstreamListener() {
      
      @Override
      public boolean onMarkerClick(Marker marker, ClusterPoint clusterPoint) {
       // TODO Auto-generated method stub
       return false;
      }
     }));
   

10. To get methods of starting and finishing clustering :
    
    

    options.setProcessingListener(this);
    /* generate two methods */
    @Override
     public void onClusteringStarted() {
      
     }
    
     @Override
     public void onClusteringFinished() {
     }

Download Source code : ClusterOnGoogleMapV2

Reference Link: Clusterkraf