android - Latitude value set to 0 -

i set value mainactivity fragment, value become 0 in fragment. when got log in movetolocation(), value of latitude 0, when got log in setlocation, value of latitude correct passed value. why this?

mainactivity

mapfragment mapfragment = new mapfragment(); mapfragment.setlocation(111, 222, "abcaddress"); 

fragment

public class mapfragment extends fragment {     private googlemap mmap;     private double mlatitude;     private double mlongitude;     private string maddress;      @override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);          try {             mapsinitializer.initialize(getactivity());         } catch (googleplayservicesnotavailableexception e) {             log.d("", "you must update google maps.");             getactivity().finish();         }     }      @override     public void onactivitycreated(bundle savedinstancestate) {         super.onactivitycreated(savedinstancestate);         mmap = ((supportmapfragment)getfragmentmanager().findfragmentbyid(r.id.map)).getmap();         movetolocation();     }      @override     public view oncreateview(layoutinflater inflater,                              viewgroup container,                              bundle savedinstancestate) {         return inflater.inflate(r.layout.map_page, null);     }      public void setlocation(double latitude, double longitude, string address) {         mlatitude = latitude;         mlongitude = longitude;         maddress = address;     }      protected void movetolocation() {         cameraposition location = new cameraposition.builder()                 .target(new latlng(mlatitude, mlongitude)).zoom(15.5f)                 .bearing(0).tilt(25).build();         mmap.animatecamera(cameraupdatefactory.newcameraposition(location));         markeroptions marker = new markeroptions().position(new latlng(mlatitude, mlongitude)).title(maddress);         marker.snippet("snippet");         mmap.addmarker(marker);     } } 

you should not create new instance of mapfragment.

to pass values, set them in argument while adding them in transaction :

bundle bundle = new bundle(); bundle.putdouble("lat", latitude); bundle.putdouble("long", longitude); bundle.putstring("address", address); myfragment.setarguments(bundle); 

and fetch value in oncreate() :

@override public view oncreate(bundle savedinstancestate) {      bundle mbundle = getarguments();      if (mbundle != null) {         string address = mbundle.getstring("address");         // call method         setlocation(mbundle.getdouble("lat"), mbundle.getdouble("long"), mbundle.getstring("address"));     } else {         toast.maketext(getactivity(), "location not found", toast.length_short).show();     }  } 

hope helps ツ