android - How to display lat-lng points on map when open notification ? -
i developing 1 application in want show map when open notification, received notification when open notification not open map lat long values.
gcmintent service class
public class gcmintentservice extends intentservice{ context context; public static int notify_no=0; //system.currenttimemillis(); private notificationmanager mnotificationmanager; notificationcompat.builder builder; public static final string tag = "gcm notification"; public gcmintentservice() { super("gcmintentservice"); // todo auto-generated constructor stub } @override protected void onhandleintent(intent intent) { // todo auto-generated method stub bundle extras = intent.getextras(); string msg = intent.getstringextra("message"); googlecloudmessaging gcm = googlecloudmessaging.getinstance(this); string messagetype = gcm.getmessagetype(intent); if (!extras.isempty()) { if (googlecloudmessaging. message_type_send_error.equals(messagetype)) { // sendnotification(regiddto.reg_id,"send error: " + extras.tostring()); sendnotification(this,msg); } else if (googlecloudmessaging. message_type_deleted.equals(messagetype)) { // sendnotification(regiddto.reg_id,"deleted messages on server: " + // extras.tostring()); sendnotification(this,msg); // if it's regular gcm message, work. } else if (googlecloudmessaging. message_type_message.equals(messagetype)) { // loop represents service doing work. (int i=0; i<5; i++) { log.i(tag, "working... " + (i+1) + "/5 @ " + systemclock.elapsedrealtime()); try { thread.sleep(500); } catch (interruptedexception e) { } } log.i(tag, "completed work @ " + systemclock.elapsedrealtime()); // post notification of received message. //sendnotification("received: " + extras.tostring()); // sendnotification(regiddto.reg_id,msg); sendnotification(this,msg); log.i(tag, "received: " + extras.tostring()); } } gcmbroadcastreceiver.completewakefulintent(intent); } private static void sendnotification(context context,string message) { int icon = r.drawable.ic_stat_gcm; long when = system.currenttimemillis(); notificationcompat.builder nbuilder; uri alarmsound = ringtonemanager .getdefaulturi(ringtonemanager.type_notification); nbuilder = new notificationcompat.builder(context) .setsmallicon(r.drawable.ic_launcher) .setcontenttitle("header") .setlights(color.blue, 500, 500).setcontenttext(message) .setautocancel(true).setticker("notification traffic") .setvibrate(new long[] { 100, 250, 100, 250, 100, 250 }) .setsound(alarmsound); string consumerid = null; integer position = null; // write click event here intent resultintent = new intent(context, showmapactivity.class); resultintent.putextra("message", message); // resultintent.setdata(uri.parse("content://"+when)); pendingintent resultpendingintent = pendingintent.getactivity(context, notify_no, resultintent, pendingintent.flag_update_current); // show max number of notifications here if (notify_no < 9) { notify_no = notify_no + 1; } else { notify_no = 0; } nbuilder.setcontentintent(resultpendingintent); notificationmanager nnotifymgr = (notificationmanager) context .getsystemservice(context.notification_service); nnotifymgr.notify(notify_no + 2, nbuilder.build()); } } showmap class
public class showmapactivity extends fragmentactivity implements locationlistener { googlemap _googlemap; latlng myposition; locationmanager locationmanger; textview addresstextview,ctimetextview; jsonobject json; gcmintentservice serv; context mcontext; intent noticeintent = getintent(); string lat; string lng; @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_show_map); //addresstextview = (textview)findviewbyid(r.id.addressid); //ctimetextview = (textview)findviewbyid(r.id.ctimeid); string message = noticeintent.getextras().getstring("message"); try { json = new jsonobject(message); lat = json.getstring("lat"); log.e("lloonngg", ""+lat); lng = json.getstring("lng"); log.e("lloonngg", ""+lng); string adr = json.getstring("address"); addresstextview.settext(adr); string ctime = json.getstring("ctime"); ctimetextview.settext(ctime); } catch (jsonexception e) { // todo auto-generated catch block e.printstacktrace(); } _googlemap = ((supportmapfragment) getsupportfragmentmanager().findfragmentbyid( r.id.map)).getmap(); locationmanager service = (locationmanager)getsystemservice(location_service); boolean enablegps = service.isproviderenabled(locationmanager.gps_provider); boolean enablewifi= service.isproviderenabled(locationmanager.network_provider); if(!enablegps || !enablewifi){ toast.maketext(showmapactivity.this, "gps signal not found", toast.length_long).show(); intent intent = new intent(settings.action_location_source_settings); startactivity(intent); } locationmanger = (locationmanager) getsystemservice(context.location_service); criteria criteria = new criteria(); string provider = service.getbestprovider(criteria, true); service.requestlocationupdates(provider, 0, 0, this); if(_googlemap==null){ toast.maketext(getapplicationcontext(), "google map not available", toast.length_long).show(); } } @override public boolean oncreateoptionsmenu(menu menu) { // inflate menu; adds items action bar if present. getmenuinflater().inflate(r.menu.show_map, menu); return true; } @override public void onlocationchanged(location location) { // todo auto-generated method stub //locationmanger.requestlocationupdates(locationmanager.network_provider, 0, 0, this); _googlemap.clear(); arraylist<hashmap<string, string>> arl = (arraylist<hashmap<string, string>>) getintent().getserializableextra("arraylist"); /*if(location!=null){ double latitude = location.getlatitude(); double langitude = location.getlongitude(); latlng latlang = new latlng(latitude, langitude); //latlngbounds curscreen = _googlemap.getprojection().getvisibleregion().latlngbounds; //curscreen.contains(latlang); myposition = new latlng(latitude, langitude); // show current location _googlemap.movecamera(cameraupdatefactory.newlatlng(myposition)); _googlemap.addmarker(new markeroptions().position(myposition).title("start")); }*/ if ( !lat.trim().equals("") && !lng.trim().equals("") ) { double hlat = double.parsedouble(lat.trim()); double hlong= double.parsedouble(lng.trim()); latlng dabaselocations =new latlng(hlat, hlong); log.e("llaattaa", ""+hlat); log.e("lloonngg", ""+hlong); // show current location database locations _googlemap.movecamera(cameraupdatefactory.newlatlng(dabaselocations)); _googlemap.addmarker(new markeroptions().position(dabaselocations).title("start")); } } @override public void onproviderdisabled(string provider) { // todo auto-generated method stub } @override public void onproviderenabled(string provider) { // todo auto-generated method stub } @override public void onstatuschanged(string provider, int status, bundle extras) { // todo auto-generated method stub } @override protected void onresume() { // todo auto-generated method stub super.onresume(); serv=new gcmintentservice(); //serv.cancelnotification(getapplicationcontext()); } } my logcat
03-06 13:03:40.187: e/androidruntime(18546): java.lang.runtimeexception: unable start activity logcat
componentinfo{com.technowellservices.traffic/com.technowellservices.traffic.showmapactivity}: java.lang.nullpointerexception 03-06 13:03:40.187: e/androidruntime(18546): @ android.app.activitythread.performlaunchactivity(activitythread.java:1728) 03-06 13:03:40.187: e/androidruntime(18546): @ android.app.activitythread.handlelaunchactivity(activitythread.java:1747) 03-06 13:03:40.187: e/androidruntime(18546): @ android.app.activitythread.access$1500(activitythread.java:155) 03-06 13:03:40.187: e/androidruntime(18546): @ android.app.activitythread$h.handlemessage(activitythread.java:993) 03-06 13:03:40.187: e/androidruntime(18546): @ android.os.handler.dispatchmessage(handler.java:130) 03-06 13:03:40.187: e/androidruntime(18546): @ android.os.looper.loop(sourcefile:351) 03-06 13:03:40.187: e/androidruntime(18546): @ android.app.activitythread.main(activitythread.java:3814) 03-06 13:03:40.187: e/androidruntime(18546): @ java.lang.reflect.method.invokenative(native method) 03-06 13:03:40.187: e/androidruntime(18546): @ j ava.lang.reflect.method.invoke(method.java:538) 03-06 13:03:40.187: e/androidruntime(18546): @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:901) 03-06 13:03:40.187: e/androidruntime(18546): @ com.android.internal.os.zygoteinit.main(zygoteinit.java:659) 03-06 13:03:40.187: e/androidruntime(18546): @ dalvik.system.nativestart.main(native method) 03-06 13:03:40.187: e/androidruntime(18546): caused by: java.lang.nullpointerexception 03-06 13:03:40.187: e/androidruntime(18546): @ com.technowellservices.traffic.showmapactivity.oncreate(showmapactivity.java:66) 03-06 13:03:40.187: e/androidruntime(18546): @ android.app.instrumentation.callactivityoncreate(instrumentation.java:1082) 03-06 13:03:40.187: e/androidruntime(18546): @ android.app.activitythread.performlaunchactivity(activitythread.java:1692)
you can't call this
intent noticeintent = getintent(); before oncreate() method.
you should put in oncreate() method.
@override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_show_map); intent noticeintent = getintent(); // ... } change from
string message = noticeintent.getextras().getstring("message"); to
string message = noticeintent.getstringextras("message");
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