i trying create android app displays map shows every university | school in area/nearby. i've looked on , google , have found tutorials on how add markers, add tiles, or show specific lat/lng there way show specific markers based on specific parameters? example, if want show every marker universities/schools how go passing parameters mapfragment? haven't tried because haven't found hints @ how except reference web app api didn't android specific api.
hope helps travel guide app code
public class searchplacetype extends activity { string[] itemtypename ={ "airport", "atm", "bank", "bus_station", "gas_station", "hospital", "mosque", "park", "restaurant", "university", "food" }; listview listview; @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.search_place_type); listview = (listview)findviewbyid(r.id.typelist); listview.setadapter(new placetypeadapter(searchplacetype.this, itemtypename)); listview.setonitemclicklistener(new onitemclicklistener() { @override public void onitemclick(adapterview<?> parent, view view, int position, long id) { intent intent = new intent(searchplacetype.this,nearbyplaces.class); intent.putextra("positionoftype", (int)position); startactivity(intent); } }); } } than class tell near places
public class nearbyplaces extends activity { arraylist<hashmap<string, string>> list = new arraylist<hashmap<string, string>>(); listview listview; int positionoftype = 0; context context; mylocation mylocation; double current_location_lat, current_location_lng; public static string latstr = ""; public static string longstr = ""; public static latlng mylatlng = null; public static latlng destinationlatlng = null; @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.near_by_places); context = nearbyplaces.this; bundle extras = getintent().getextras(); if(extras!=null) { positionoftype = extras.getint("positionoftype", positionoftype); } listview = (listview)findviewbyid(r.id.nearbylist); mylocation = new mylocation(context); if (mylocation.islocationavailable() && mylocation.getuserlocation() != null) { current_location_lat = mylocation.getuserlocation().latitude; current_location_lng = mylocation.getuserlocation().longitude; latstr = current_location_lat + ""; longstr = current_location_lng + ""; mylatlng = new latlng(current_location_lat, current_location_lng); //url = url_part1 + latstr + "," + longstr + url_part2; log.d("latitude", string.valueof(current_location_lat)); log.d("longitude", string.valueof(current_location_lng)); new placetask(context, positionoftype, latstr, longstr, new ontaskdonelistener() { @override public void ontaskdone(jsonobject jsonobject) { if(jsonobject!=null) { try { jsonobject obj = jsonobject;//new jsonobject(jsonobject); string status = obj.getstring("status"); if(status.equals("ok")) { jsonarray arr = obj.getjsonarray("results"); for(int = 0; < arr.length(); i++) { double lat = arr.getjsonobject(i).getjsonobject("geometry").getjsonobject("location").getdouble("lat"); double lng = arr.getjsonobject(i).getjsonobject("geometry").getjsonobject("location").getdouble("lng"); string place_name = arr.getjsonobject(i).getstring("name"); string vicinity = arr.getjsonobject(i).getstring("vicinity"); hashmap<string, string> map = new hashmap<string,string>(); map.put("placename", place_name); map.put("vicinity", vicinity); map.put("lat", string.valueof(lat)); map.put("lng", string.valueof(lng)); list.add(map); } nearbyplaceadapter adapter = new nearbyplaceadapter(context, list); listview.setadapter(adapter); } } catch (jsonexception e) { e.printstacktrace(); } } else { toast.maketext(context, "response null", toast.length_long).show(); } } }).execute(); //showsearchdialog(map); } else { toast.maketext(context, "please enable location services , gps device", toast.length_long).show(); } listview.setonitemclicklistener(new onitemclicklistener() { @override public void onitemclick(adapterview<?> parent, view view, int position, long id) { hashmap<string, string> map = list.get(position); intent intent = new intent(context,directionactivity3.class); destinationlatlng = new latlng(double.valueof(map.get("lat")), double.valueof(map.get("lat"))); startactivity(intent); } }); } } draw marker using mapypane class
public class mapypane extends activity implements onmapreadycallback { string[] itemtypename ={ "airport", "atm", "bank", "bus_station", "gas_station", "hospital", "mosque", "park", "restaurant", "university", "food" }; marker mymarker; gmapv2direction md; mylocation mylocation; googlemap googlemap; double current_location_lat, current_location_lng; public static string latstr = ""; public static string longstr = ""; dialog searchdialog; imageview searchdialogiv; imageview searchicon; edittext searchtext; context context; integer[] imageid = { r.drawable.school_3, r.drawable.atm_3, r.drawable.school_3, r.drawable.police_station_3, r.drawable.cng_station_3,//5 r.drawable.hospital_3, r.drawable.school_3, r.drawable.hospital_3,//8 r.drawable.hotel_3, r.drawable.cng_station_3, r.drawable.hotel_3 }; int positiontofind = 0; @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); context = mapypane.this; md = new gmapv2direction(); mapfragment mapfragment = (mapfragment) getfragmentmanager() .findfragmentbyid(r.id.fragment_map); mapfragment.getmapasync(this); googlemap = mapfragment.getmap();//my doctory.. bundle extras = getintent().getextras(); if(extras!=null) { positiontofind = extras.getint("positiontofind", positiontofind); } searchtext = (edittext)findviewbyid(r.id.search_text); searchdialogiv = (imageview)findviewbyid(r.id.search_dialogiv); searchdialogiv.setonclicklistener(new onclicklistener() { @override public void onclick(view v) { if(googlemap==null) { toast.maketext(context, "unable load map", toast.length_long).show(); } else { showsearchdialog(googlemap); } } }); searchicon = (imageview)findviewbyid(r.id.search_icon); searchicon.setvisibility(view.gone); searchtext.setvisibility(view.gone); searchicon.setonclicklistener(new onclicklistener() { @override public void onclick(view v) { //if(sear) new placetask(context, searchtext.gettext().tostring(), latstr, longstr, new ontaskdonelistener() { @override public void ontaskdone(jsonobject jsonobject) { //drawmarkersonmap(jsonobject, googlemap,postponeentertransition()); } }).execute(); } }); } /*public void drawpathbetween(latlng sourceposition,latlng destposition,googlemap mmap) { document doc = md.getdocument(sourceposition, destposition, gmapv2direction.mode_driving); arraylist<latlng> directionpoint = md.getdirection(doc); polylineoptions rectline = new polylineoptions().width(3).color( color.red); (int = 0; < directionpoint.size(); i++) { rectline.add(directionpoint.get(i)); } polyline polylin = mmap.addpolyline(rectline); }*/ @override public void onmapready(googlemap map) { // check if map created or not if (map == null) { toast.maketext(getapplicationcontext(), "sorry! unable load maps", toast.length_short) .show(); } else { mylocation = new mylocation(mapypane.this, map); if (mylocation.islocationavailable() && mylocation.getuserlocation() != null) { current_location_lat = mylocation.getuserlocation().latitude; current_location_lng = mylocation.getuserlocation().longitude; latstr = current_location_lat + ""; longstr = current_location_lng + ""; //url = url_part1 + latstr + "," + longstr + url_part2; log.d("latitude", string.valueof(current_location_lat)); log.d("longitude", string.valueof(current_location_lng)); // showing current location map.setmylocationenabled(true); // move camera instantly hamburg zoom of 15. map.movecamera(cameraupdatefactory.newlatlngzoom(new latlng(current_location_lat, current_location_lng), 15)); // zoom in, animating camera. map.animatecamera(cameraupdatefactory.zoomto(10), 2000, null); // moving camera location animation /*cameraposition cameraposition = new cameraposition.builder().target( new latlng(current_location_lat, current_location_lng)).zoom(12).build(); //cameraposition cameraposition = new cameraposition.builder().target( //new latlng( -33.8650, 151.2094)).zoom(12).build(); map.animatecamera(cameraupdatefactory.newcameraposition(cameraposition));*/ markeroptions markeroptions = new markeroptions().title("yourlocation").position(new latlng(current_location_lat, current_location_lng)).icon(bitmapdescriptorfactory .fromresource(r.drawable.gas_station));//gas_station mymarker = map.addmarker(markeroptions); new placetask(context, positiontofind, latstr, longstr, new ontaskdonelistener() { @override public void ontaskdone(jsonobject jsonobject) { } }); //showsearchdialog(map); } else { toast.maketext(mapypane.this, "please enable location services , gps device", toast.length_long).show(); } } /* latlng sydney = new latlng(-33.867, 151.206); map.setmylocationenabled(true); map.movecamera(cameraupdatefactory.newlatlngzoom(sydney, 13)); map.addmarker(new markeroptions() .title("sydney") .snippet("the populous city in australia.") .position(sydney));*/ /*map.movecamera(cameraupdatefactory.newlatlngzoom( new latlng(41.889, -87.622), 16)); // can customize marker image using images bundled // app, or dynamically generated bitmaps. map.addmarker(new markeroptions() .icon(bitmapdescriptorfactory.fromresource(r.drawable.ic_launcher)) .anchor(0.0f, 1.0f) // anchors marker on bottom left .position(new latlng(41.889, -87.622)));*/ } private void drawmarkersonmap(jsonobject jsonobject,final googlemap googlemap,int posi) { if(jsonobject!=null) { googlemap.clear(); try { jsonobject obj = jsonobject;//new jsonobject(jsonobject); string status = obj.getstring("status"); if(status.equals("ok")) { jsonarray arr = obj.getjsonarray("results"); for(int = 0; < arr.length(); i++) { double lat = arr.getjsonobject(i).getjsonobject("geometry").getjsonobject("location").getdouble("lat"); double lng = arr.getjsonobject(i).getjsonobject("geometry").getjsonobject("location").getdouble("lng"); string food_name = arr.getjsonobject(i).getstring("name"); string vicinity = arr.getjsonobject(i).getstring("vicinity"); markeroptions marker = new markeroptions().position(new latlng(lat, lng)).icon(bitmapdescriptorfactory .fromresource( imageid[posi]));// r.drawable.ic_launcher));//gas_station marker.title(food_name); marker.snippet(vicinity); final marker testmarker = googlemap.addmarker(marker); googlemap.setonmarkerclicklistener(new onmarkerclicklistener() { @override public boolean onmarkerclick(marker markker) { if(markker.equals(testmarker)) { //drawpathbetween(mymarker.getposition(), markker.getposition(), googlemap); } else { } return false; } }); } } } catch (jsonexception e) { e.printstacktrace(); } } } private void showsearchdialog(final googlemap map) { searchdialog = new dialog(mapypane.this); searchdialog.requestwindowfeature(window.feature_no_title); searchdialog.setcontentview(r.layout.menu_item_custom_dialog); searchdialog.setcanceledontouchoutside(false); listview list; final string[] web = { "airport", "atm", "bank", "bus_station", "gas_station", //department_store ya home_goods_store "hospital", //health "mosque",//7 "park", "restaurant",//instead of hotels "university", "food" } ; integer[] imageid = { r.drawable.school_3, r.drawable.atm_3, r.drawable.school_3, r.drawable.police_station_3, r.drawable.cng_station_3,//5 r.drawable.hospital_3, r.drawable.school_3, r.drawable.hospital_3,//8 r.drawable.hotel_3, r.drawable.cng_station_3, r.drawable.hotel_3 }; customlist adapter = new customlist(mapypane.this, web, imageid); list = (listview) searchdialog.findviewbyid(r.id.list_location); list.setadapter(adapter); ///list.setselector(r.drawable.list_item_selector); list.setonitemclicklistener(new adapterview.onitemclicklistener() { @override public void onitemclick(adapterview<?> parent, view view, final int position, long id) { //toast.maketext(mapypane.this, "you clicked @ " +web[+ position], toast.length_short).show(); connectivitymanager connmanager = (connectivitymanager) getsystemservice(context.connectivity_service); networkinfo mwifi = connmanager.getnetworkinfo(connectivitymanager.type_wifi); if (mwifi.isconnected()) { if(latstr.equals("")) { toast.maketext(mapypane.this, " please enable gps location ", toast.length_short).show(); } else { new placetask(mapypane.this, position, latstr, longstr, new ontaskdonelistener() { @override public void ontaskdone(jsonobject jsonobject) { drawmarkersonmap(jsonobject, map,position); } }).execute(); searchdialog.dismiss(); } } else { toast.maketext(mapypane.this, "internet not available", toast.length_short).show(); } } }); searchdialog.show(); } } 
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