i'm trying debug , make sure i'm getting correct longitude , latitude information. when displaying latitude , longitude textview, longitude displays correctly, latitude 0.0 no matter if use network_provider or gps_provider. common problem? treating latitude longitude, it's not obvious me why not working. in advance.
here code location stuff, in case (mind variable names):
textview textlat; textview textlong; textview textspeed; protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_display_navigation); textlat = (textview) findviewbyid(r.id.textlat); textlong = (textview) findviewbyid(r.id.textlong); textspeed = (textview) findviewbyid(r.id.speed_lol); locationmanager bubblebutt = (locationmanager) this.getsystemservice(context.location_service); locationlistener bblistener = new mylocationlistener(); location lastlocation = bubblebutt.getlastknownlocation(locationmanager.network_provider); if (lastlocation != null) { textlat.settext(double.tostring(lastlocation.getlatitude())); textlong.settext(double.tostring(lastlocation.getlongitude())); } bubblebutt.requestlocationupdates(locationmanager.network_provider, 0, 0, bblistener); } class mylocationlistener implements locationlistener{ @override public void onlocationchanged(location location) { if(location != null) { double plong = location.getlongitude(); double plat = location.getlatitude(); double stupid = location.getspeed(); textlat.settext(double.tostring(plat)); textlong.settext(double.tostring(plong)); textlat.settext(double.tostring(stupid)); }
first use code devices current loacation.
package com.deals; import android.app.alertdialog; import android.app.service; import android.content.context; import android.content.dialoginterface; import android.content.intent; import android.location.location; import android.location.locationlistener; import android.location.locationmanager; import android.os.bundle; import android.os.ibinder; import android.provider.settings; import android.util.log; public class gpstracker extends service implements locationlistener { private final context mcontext; // flag gps status boolean isgpsenabled = false; // flag network status boolean isnetworkenabled = false; // flag gps status boolean cangetlocation = false; location location; // location double latitude; // latitude double longitude; // longitude // minimum distance change updates in meters private static final long min_distance_change_for_updates = 10; // 10 meters // minimum time between updates in milliseconds private static final long min_time_bw_updates = 1000 * 60 * 1; // 1 minute // declaring location manager protected locationmanager locationmanager; public gpstracker(context context) { this.mcontext = context; getlocation(); } public location getlocation() { try { locationmanager = (locationmanager) mcontext .getsystemservice(location_service); // getting gps status isgpsenabled = locationmanager .isproviderenabled(locationmanager.gps_provider); // getting network status isnetworkenabled = locationmanager .isproviderenabled(locationmanager.network_provider); if (!isgpsenabled && !isnetworkenabled) { // no network provider enabled } else { this.cangetlocation = true; // first location network provider if (isnetworkenabled) { locationmanager.requestlocationupdates( locationmanager.network_provider, min_time_bw_updates, min_distance_change_for_updates, this); log.d("network", "network"); if (locationmanager != null) { location = locationmanager .getlastknownlocation(locationmanager.network_provider); if (location != null) { latitude = location.getlatitude(); longitude = location.getlongitude(); } } } // if gps enabled lat/long using gps services if (isgpsenabled) { if (location == null) { locationmanager.requestlocationupdates( locationmanager.gps_provider, min_time_bw_updates, min_distance_change_for_updates, this); log.d("gps enabled", "gps enabled"); if (locationmanager != null) { location = locationmanager .getlastknownlocation(locationmanager.gps_provider); if (location != null) { latitude = location.getlatitude(); longitude = location.getlongitude(); } } } } } } catch (exception e) { e.printstacktrace(); } return location; } /** * stop using gps listener * calling function stop using gps in app * */ public void stopusinggps(){ if(locationmanager != null){ locationmanager.removeupdates(gpstracker.this); } } /** * function latitude * */ public double getlatitude(){ if(location != null){ latitude = location.getlatitude(); } // return latitude return latitude; } /** * function longitude * */ public double getlongitude(){ if(location != null){ longitude = location.getlongitude(); } // return longitude return longitude; } /** * function check gps/wifi enabled * @return boolean * */ public boolean cangetlocation() { return this.cangetlocation; } /** * function show settings alert dialog * on pressing settings button lauch settings options * */ public void showsettingsalert(){ alertdialog.builder alertdialog = new alertdialog.builder(mcontext); // setting dialog title alertdialog.settitle("gps settings"); // setting dialog message alertdialog.setmessage("gps not enabled. want go settings menu?"); // on pressing settings button alertdialog.setpositivebutton("settings", new dialoginterface.onclicklistener() { public void onclick(dialoginterface dialog,int which) { intent intent = new intent(settings.action_location_source_settings); mcontext.startactivity(intent); } }); // on pressing cancel button alertdialog.setnegativebutton("cancel", new dialoginterface.onclicklistener() { public void onclick(dialoginterface dialog, int which) { dialog.cancel(); } }); // showing alert message alertdialog.show(); } @override public void onlocationchanged(location location) { } @override public void onproviderdisabled(string provider) { } @override public void onproviderenabled(string provider) { } @override public void onstatuschanged(string provider, int status, bundle extras) { } @override public ibinder onbind(intent arg0) { return null; } } and code put main activity on create method
gps = new gpstracker(getactivity()); if (gps.cangetlocation()) { latitude = gps.getlatitude(); longitude = gps.getlongitude(); // toast.maketext( // getapplicationcontext(), // "your location - \nlat: " + latitude + "\nlong: " // + longitude, toast.length_long).show(); } else { gps.showsettingsalert(); } log.e("latlong", "" + latitude + "" + longitude); 