Location returning null sometime after Location Service is turned on Android -
i trying latitude , longitude device using fusedlocationapi . if location turned off asking user turn on location service through dialog. once location service turned on sometime getting longitude , latitude . sometime returning location null. here code latitude , longitude using fusedlocationapi. problem comes when user has turn on location service using dialog
private void getlatlong() { mgoogleapiclient = new googleapiclient.builder(this) // next 2 lines tell new client “this” current class handle connection stuff .addconnectioncallbacks(this) .addonconnectionfailedlistener(this) //fourth line adds locationservices api endpoint googleplayservices .addapi(locationservices.api) .build(); } @override protected void onpause() { super.onpause(); overridependingtransition(0, 0); //disconnect api onpause() if (mgoogleapiclient.isconnected()) { locationservices.fusedlocationapi.removelocationupdates(mgoogleapiclient, this); mgoogleapiclient.disconnect(); } } @override public void onresume() { super.onresume(); //now lets connect api mgoogleapiclient.connect(); } @override public void onconnected(@nullable bundle bundle) { if (mgoogleapiclient.isconnected()) { log.e("googleapiclient", "connected"); settingsrequest(); } } private void settingsrequest() { mlocationrequest = locationrequest.create() .setpriority(locationrequest.priority_high_accuracy) .setinterval(10 * 1000) // 10 seconds, in milliseconds .setfastestinterval(1000); // 1 second, in milliseconds locationsettingsrequest.builder builder = new locationsettingsrequest.builder().addlocationrequest(mlocationrequest); builder.setalwaysshow(true); //this key ingredient pendingresult<locationsettingsresult> result = locationservices.settingsapi.checklocationsettings(mgoogleapiclient, builder.build()); result.setresultcallback(new resultcallback<locationsettingsresult>() { @override public void onresult(locationsettingsresult result) { final status status = result.getstatus(); log.e("statuscode", status.getstatuscode() + ""); switch (status.getstatuscode()) { case locationsettingsstatuscodes.success: log.e("googleafterlocation", mgoogleapiclient.isconnected() + ""); if (mgoogleapiclient.isconnected()) { // check if device has os marshmellow or greater if (build.version.sdk_int > build.version_codes.lollipop_mr1) { if (activitycompat.checkselfpermission(registrationactivity.this, android.manifest.permission.access_fine_location) != packagemanager.permission_granted && activitycompat.checkselfpermission(registrationactivity.this, android.manifest.permission.access_coarse_location) != packagemanager.permission_granted) { activitycompat.requestpermissions(registrationactivity.this, new string[]{android.manifest.permission.access_fine_location}, access_fine_location_code); } else { // location location location = locationservices.fusedlocationapi.getlastlocation(mgoogleapiclient); log.e("location", location + ""); if (location == null) { locationservices.fusedlocationapi.requestlocationupdates(mgoogleapiclient, mlocationrequest, registrationactivity.this); alerter.create(registrationactivity.this) .settitle(r.string.warning) .setduration(2000) .setbackgroundcolor(r.color.dot_dark_screen1) .settext("please turn on location settings , start application") .show(); } else { //if went fine lets latitude , longitude currentlatitude = location.getlatitude(); currentlongitude = location.getlongitude(); if (currentlatitude != -0.0 && currentlongitude != -0.0) { //get weather data //getweatherdata(currentlatitude, currentlongitude); log.e("permissiongranted", currentlatitude + " " + currentlongitude); } else { alerter.create(registrationactivity.this) .settitle(r.string.warning) .settext("please check internet connectivity") .setduration(1500) .setbackgroundcolor(r.color.dot_dark_screen1) .show(); } // toast.maketext(this, currentlatitude + " works " + currentlongitude + "", toast.length_long).show(); } } } else { // location location location = locationservices.fusedlocationapi.getlastlocation(mgoogleapiclient); if (location == null) { locationservices.fusedlocationapi.requestlocationupdates(mgoogleapiclient, mlocationrequest, registrationactivity.this); } else { //if went fine lets latitude , longitude currentlatitude = location.getlatitude(); currentlongitude = location.getlongitude(); if (currentlatitude != -0.0 && currentlongitude != -0.0) { //get weather data //getweatherdata(currentlatitude, currentlongitude); log.e("lollipop", currentlatitude + " " + currentlongitude); } else { alerter.create(registrationactivity.this) .settitle(r.string.warning) .settext("please check internet connectivity") .setduration(1500) .setbackgroundcolor(r.color.dot_dark_screen1) .show(); } // toast.maketext(this, currentlatitude + " works " + currentlongitude + "", toast.length_long).show(); } } } break; case locationsettingsstatuscodes.resolution_required: // location settings not satisfied. fixed showing user // dialog. try { // show dialog calling startresolutionforresult(), // , check result in onactivityresult(). status.startresolutionforresult(registrationactivity.this, request_resolve_error); } catch (intentsender.sendintentexception e) { // ignore error. } break; case locationsettingsstatuscodes.settings_change_unavailable: // location settings not satisfied. however, have no way fix // settings won't show dialog. break; } } }); } // method called on devices having installed android version >= m (marshmellow) // method show user options allow or deny location services @ runtime @override public void onrequestpermissionsresult(int requestcode, string permissions[], int[] grantresults) { switch (requestcode) { case 3310: { if (grantresults.length > 0) { (int = 0, len = permissions.length; < len; i++) { if (grantresults[i] == packagemanager.permission_denied) { // show user dialog why need location } else if (grantresults[i] == packagemanager.permission_granted) { // location getlatlong(); } else { finish(); } } } return; } } } @override public void onactivityresult(int requestcode, int resultcode, intent data) { log.e("requestcode", requestcode + ""); if (requestcode == request_resolve_error) { mresolvingerror = false; switch (resultcode) { case activity.result_ok: log.e("locationdialog", "turned on"); // location method if (activitycompat.checkselfpermission(registrationactivity.this, manifest.permission.access_fine_location) != packagemanager.permission_granted && activitycompat.checkselfpermission(registrationactivity.this, manifest.permission.access_coarse_location) != packagemanager.permission_granted) { // todo: consider calling // activitycompat#requestpermissions // here request missing permissions, , overriding // public void onrequestpermissionsresult(int requestcode, string[] permissions, // int[] grantresults) // handle case user grants permission. see documentation // activitycompat#requestpermissions more details. return; } location location = locationservices.fusedlocationapi.getlastlocation(mgoogleapiclient); if (location == null) { locationservices.fusedlocationapi.requestlocationupdates(mgoogleapiclient, mlocationrequest, registrationactivity.this); } else { //if went fine lets latitude , longitude currentlatitude = location.getlatitude(); currentlongitude = location.getlongitude(); if (currentlatitude != -0.0 && currentlongitude != -0.0) { //get weather data //getweatherdata(currentlatitude, currentlongitude); } else { alerter.create(registrationactivity.this) .settitle(r.string.warning) .settext("please check internet connectivity") .setduration(1500) .setbackgroundcolor(r.color.dot_dark_screen1) .show(); } //toast.maketext(getactivity(), currentlatitude + " works " + currentlongitude + "", toast.length_long).show(); } break; case activity.result_canceled: finish(); break; } } } @override public void onconnectionsuspended(int i) { } @override public void onconnectionfailed(@nonnull connectionresult connectionresult) { /* * google play services can resolve errors detects. * if error has resolution, try sending intent * start google play services activity can resolve * error. */ if (connectionresult.hasresolution()) { try { mresolvingerror = true; // start activity tries resolve error connectionresult.startresolutionforresult(registrationactivity.this, connection_failure_resolution_request); /* * thrown if google play services canceled original * pendingintent */ } catch (intentsender.sendintentexception e) { // log error mgoogleapiclient.connect(); } } else { /* * if no resolution available, display dialog * user error. */ showerrordialog(connectionresult.geterrorcode()); mresolvingerror = true; log.e("error", "location services connection failed code " + connectionresult.geterrorcode()); } } /* creates dialog error message */ private void showerrordialog(int errorcode) { // create fragment error dialog errordialogfragment dialogfragment = new errordialogfragment(); // pass error should displayed bundle args = new bundle(); args.putint(dialog_error, errorcode); dialogfragment.setarguments(args); dialogfragment.show(getsupportfragmentmanager(), "errordialog"); } /* called errordialogfragment when dialog dismissed. */ public static void ondialogdismissed() { mresolvingerror = false; } /* fragment display error dialog */ public static class errordialogfragment extends dialogfragment { public errordialogfragment() { } @override public dialog oncreatedialog(bundle savedinstancestate) { // error code , retrieve appropriate dialog int errorcode = this.getarguments().getint(dialog_error); return googleapiavailability.getinstance().geterrordialog( this.getactivity(), errorcode, request_resolve_error); } @override public void ondismiss(dialoginterface dialog) { ondialogdismissed(); } } @override public void onlocationchanged(location location) { currentlatitude = location.getlatitude(); currentlongitude = location.getlongitude(); } this line returning null after location turned on:
location location = locationservices.fusedlocationapi.getlastlocation(mgoogleapiclient);
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