java - Android Proximity alert with multiple POI -
i have database of lat , long id's , have retrieved using json , want apply proximity alert geo locations in array. unsure if array being passed or if proximity alert.java being invoked properly
this db retrieval
public class retrievedb extends asynctask<void, integer, void> { @override protected void doinbackground(void... params) { string result = ""; inputstream = null; //http post try{ httpclient httpclient = new defaulthttpclient(); httppost httppost = new httppost("http://cs1.ucc.ie/~am32/getdb.php"); httpresponse response = httpclient.execute(httppost); httpentity entity = response.getentity(); = entity.getcontent(); } catch(exception e){ log.e("log_tag", "error in http connection "+e.tostring()); } //convert response string try{ bufferedreader reader = new bufferedreader(new inputstreamreader(is, "iso-8859-1"),8); stringbuilder sb = new stringbuilder(); sb.append(reader.readline() + "\n"); string line = null; while ((line = reader.readline()) != null) { sb.append(line); } is.close(); result=sb.tostring(); log.i("json string", result); } catch(exception e){ log.e("log_tag", "error converting result "+e.tostring()); } //parse json data try{ jsonarray jarray = new jsonarray(result); jsonobject json_data = null; system.out.println("length"+ jarray.length()); log.d("db","length"+jarray.length()); for(int i=0; i<jarray.length(); i++){ json_data = jarray.getjsonobject(i); int id = json_data.getint("id") ; //string title = json_data.getstring("title"); double latitude = json_data.getdouble("lat"); double longitude = json_data.getdouble("lon"); //adds proximity poi's proxalert inst = new proxalert(); inst.addproximityalert(latitude,longitude, id); // inst.savecoordinatesinpreferences((float)latitude, (float)longitude); //prints logcat system.out.println(id+"&"+latitude+"&"+longitude); } } catch(jsonexception e){ log.e("log_tag", "error parsing data "+e.tostring()); log.e("log_tag","failed data as:\n"+result); } return null; } @override protected void onprogressupdate(integer... values) { // invoked on ui thread publishprogress(progress...). super.onprogressupdate(values); } @override protected void onpostexecute(void result) { // result of background comp passed step invoked on ui thread super.onpostexecute(result); } }
and proximity alert class
public class proxalert extends activity { private static final long point_radius = 10; private static final long prox_alert_expiration = -1; private static final string point_latitude_key = "point_latitude_key"; private static final string point_longitude_key = "point_longitude_key"; private locationmanager locationmanager; private static final string prox_alert_intent= "com.example.try0.proximityintentreceiver"; void addproximityalert (double latitude, double longitude, int id){ bundle extras = new bundle(); extras.putint("title", id); extras.putdouble("lat", latitude); extras.putdouble("lon", longitude); intent intent = new intent(prox_alert_intent + id); //intent.putextra("alert", "it works"); intent.putextra(prox_alert_intent, extras); pendingintent proximityintent = pendingintent.getbroadcast(this, id, intent, pendingintent.flag_cancel_current); //proximityintent used generate intent fire when entry or exit alert region detected locationmanager.addproximityalert(latitude,longitude,point_radius,prox_alert_expiration,proximityintent); intentfilter filter = new intentfilter(prox_alert_intent + id); registerreceiver(new proximityintentreciever(), filter); } void savecoordinatesinpreferences(float currentlatitude, float currentlongitude){ sharedpreferences prefs = this.getsharedpreferences(getclass().getsimplename(), context.mode_private); sharedpreferences.editor prefseditor = prefs.edit(); prefseditor.putfloat(point_latitude_key, currentlatitude); prefseditor.putfloat(point_longitude_key, currentlongitude); prefseditor.commit(); } location retrievelocationfrompreferences(){ sharedpreferences prefs = this.getsharedpreferences(getclass().getsimplename(), context.mode_private); location location = new location("point_location"); location.setlatitude(prefs.getfloat(point_latitude_key, 0)); location.setlongitude(prefs.getfloat(point_longitude_key, 0)); return location; } }
i'd appreciate been lot of staring , confusing
here service, works perfectly, know on market, database if plug in json maybe can alter needs
import android.app.notification; import android.app.notificationmanager; import android.app.pendingintent; import android.app.service; import android.content.broadcastreceiver; import android.content.context; import android.content.intent; import android.content.intentfilter; import android.database.cursor; import android.graphics.color; import android.location.location; import android.location.locationlistener; import android.location.locationmanager; import android.os.bundle; import android.os.ibinder; import android.util.log; import android.widget.toast; public class proximityservice extends service{ string proximitysd = "com.apps.proximityservice"; int n = 0; private broadcastreceiver mybroadcast; private locationmanager locationmanager; mylocationlistener locationlistenerp; public proximityservice() { } @override public ibinder onbind(intent intent) { // todo auto-generated method stub return null; } @override public void oncreate() { mybroadcast = new proximityintentreceiver(); locationmanager = (locationmanager) getsystemservice(context.location_service); double lat; double lng; float radius = 50f; long expiration = -1; mydbadapter db = new mydbadapter(this); cursor cursor; db.read(); cursor = db.getallentries(); boolean go = cursor.movetofirst(); while(cursor.isafterlast() != true){ lat = cursor.getint(mydbadapter.latitude_column)/1e6; lng = cursor.getint(mydbadapter.longitude_column)/1e6; string = cursor.getstring(mydbadapter.icon_column); string how = cursor.getstring(mydbadapter.fish_column); string proximitys = "com.apps.proximityservice" + n; intentfilter filter = new intentfilter(proximitys); registerreceiver(mybroadcast, filter ); intent intent = new intent(proximitys); intent.putextra("alert", what); intent.putextra("type", how); pendingintent proximityintent = pendingintent.getbroadcast(this, n, intent, pendingintent.flag_cancel_current); locationmanager.addproximityalert(lat, lng, radius, expiration, proximityintent); //sendbroadcast(new intent(intent)); n++; cursor.movetonext(); } db.close(); cursor.close(); } @override public void ondestroy() { toast.maketext(this, "proximity service stopped", toast.length_long).show(); try{ unregisterreceiver(mybroadcast); }catch(illegalargumentexception e){ log.d("reciever",e.tostring()); } } @override public void onstart(intent intent, int startid) { toast.maketext(this, "proximity service started", toast.length_long).show(); //intentfilter filter = new intentfilter(proximitys); //registerreceiver(mybroadcast,filter); } public class proximityintentreceiver extends broadcastreceiver{ private static final int notification_id = 1000; @override public void onreceive(context arg0, intent arg1) { string key = locationmanager.key_proximity_entering; boolean entering = arg1.getbooleanextra(key, false); string here = arg1.getextras().getstring("alert"); string happy = arg1.getextras().getstring("type"); notificationmanager notificationmanager = (notificationmanager) getsystemservice(context.notification_service); pendingintent pendingintent = pendingintent.getactivity(arg0, 0, arg1, 0); notification notification = createnotification(); notification.setlatesteventinfo(arg0, "entering proximity!", "you approaching " + here + " marker.", pendingintent); notificationmanager.notify(notification_id, notification); } private notification createnotification() { notification notification = new notification(); notification.icon = r.drawable.icon; notification.when = system.currenttimemillis(); notification.flags |= notification.flag_auto_cancel; notification.flags |= notification.flag_show_lights; notification.defaults |= notification.default_vibrate; notification.defaults |= notification.default_lights; notification.ledargb = color.white; notification.ledonms = 1500; notification.ledoffms = 1500; return notification; } //make actions } public class mylocationlistener implements locationlistener { public void onlocationchanged(location location) { toast.maketext(getapplicationcontext(), "i here", toast.length_long).show(); } public void onproviderdisabled(string s) { } public void onproviderenabled(string s) { } @override public void onstatuschanged(string arg0, int arg1, bundle arg2) { // todo auto-generated method stub } } }
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