Clustering not working in google maps for android. What am i doing wrong? -

here code render 100 markers around given location, no matter do, clusters/markers wont show up. have doubt if issue initialization of clustermanager, mclustermanager = new clustermanager<markermanager>(getactivity(), mmap);

from example google shown here,clustermanager initialized mclustermanager = new clustermanager<myitem>(this, getmap());

but class inherits fragment, getactivity return wrong context? think expects com.example.mkallingal.mapapp3.mainactivity.placeholderfragment

your appreciated , mark best answer if me. thank you.

below code:

  public static class placeholderfragment extends fragment     {         public googlemap mmap;         private clustermanager<markermanager> mclustermanager;         context _mapcontext;          private  void setupmapifneeded(view rootview) {             // null check confirm have not instantiated map.             if (mmap == null) {                   fragmentactivity activity = (fragmentactivity)rootview.getcontext();                 fragmentmanager manager = activity.getsupportfragmentmanager();                 fragment x= manager.findfragmentbyid(r.id.container);                  fragment _childfragment= x.getchildfragmentmanager().findfragmentbyid(r.id.map);                 // try obtain map supportmapfragment.                 mmap = ((supportmapfragment) _childfragment)                         .getmap();                 // check if successful in obtaining map.                  if (mmap != null) {                    clusterup(5.293842, 101.682636);                   }             }         }          @override         public view oncreateview(layoutinflater inflater, viewgroup container,                                  bundle savedinstancestate) {             view rootview = inflater.inflate(r.layout.fragment_main, container, false);             _mapcontext= container.getcontext();             setupmapifneeded(rootview);             return rootview;         }          private void clusterup(double lat, double lng)         {             latlng sydney = new latlng(5.415694, 101.678282);             latlng mountain_view = new latlng(lat,lng);             mmap.movecamera(cameraupdatefactory.newlatlngzoom(sydney, 15));             mmap.animatecamera(cameraupdatefactory.zoomin());             mmap.animatecamera(cameraupdatefactory.zoomto(10), 2000, null);             cameraposition cameraposition = new cameraposition.builder()                     .target(mountain_view)      // sets center of map mountain view                     .build();                   // creates cameraposition builder             mmap.animatecamera(cameraupdatefactory.newcameraposition(cameraposition));             mmap.setoncamerachangelistener(mclustermanager);             mmap.setonmarkerclicklistener(mclustermanager);              mclustermanager = new clustermanager<markermanager>(getactivity(), mmap);              (int i=0;i<100;i++){                 latlng _newlocation= getlocationnearcords(5.415694, 101.678282, 1000); //randomly generate 100 cordinates around location                  markermanager offsetitem = new markermanager(_newlocation.latitude,_newlocation.longitude);                 mclustermanager.additem(offsetitem);             }         }          public class markermanager implements clusteritem {             private latlng mposition = new latlng(22.2222, 33.3333);              public markermanager() {              }              public markermanager(double lat, double lng) {                 mposition = new latlng(lat, lng);             }              @override             public latlng getposition() {                 return mposition;             }         }       } 

whoops, bad, event handlers attached before initialization of clustermanager, should like,

 mclustermanager = new clustermanager<markermanager>(getactivity(), mmap);  mmap.setoncamerachangelistener(mclustermanager);  mmap.setonmarkerclicklistener(mclustermanager); 

now works...