android - locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER) returns null -

-

i've location app send location of phone database. when try location network (no 3g on) works! when turn 3g on doesn't work because code: locationmanager.getlastknownlocation(locationmanager.gps_provider);

always return null. here full locationhandler..

code of locationhandler class. 

package info.androidhive.loginandregistration.location;  import android.content.context; import android.content.intent; import android.location.address; import android.location.geocoder; import android.location.location; import android.location.locationmanager; import android.util.log;  import java.io.ioexception; import java.util.list; import java.util.locale;  public class locationhandler {      context mcontext = null;     context ctx;     double lat;     double long;     location localization;     locationmanager locationmanager;     boolean gpsactivate = false;     boolean gprsactivate = false;     boolean getubicationbool;      private double mlastlatitudelocation = 0;     private double mlastlongitudelocation = 0;     intent intent;      // flag gps status     public boolean isgpsenabled = false;      // flag network status     boolean isnetworkenabled = false;      // flag gps status     boolean cangetlocation = false;      location location; // location     double latitude; // latitude     double longitude; // longitude      public locationhandler(context context) {          mcontext = context;     }      private void configurationmanager() {         locationmanager = (locationmanager) mcontext.getsystemservice(context.location_service);         // getting gps status         isgpsenabled = locationmanager.isproviderenabled(locationmanager.gps_provider);         log.v("isgpsenabled", "=" + isgpsenabled);         // getting network status         isnetworkenabled = locationmanager.isproviderenabled(locationmanager.network_provider);          log.v("isnetworkenabled", "=" + isnetworkenabled);     }      public location getlocation() {         try {              configurationmanager();              if (isgpsenabled == false && isnetworkenabled == false) {                 // no network provider enabled                 return null;             } else {                 this.cangetlocation = true;                 if (isnetworkenabled) {                     location = null;                     log.d("network", "network - location ");                     if (locationmanager != null) {                         location = locationmanager.getlastknownlocation(locationmanager.network_provider);                         if (location != null) {                             latitude = location.getlatitude();                             longitude = location.getlongitude();                         }                     }                 }                 if (isgpsenabled) {                     location = null;                     if (location == null) {                         log.d("gps enabled", "gps enabled - location");                         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;     } }

1-you have make sure have permission in manifest file added:

access_fine_location

2- gps provider according sdk is: "this provider determines location using satellites. depending on conditions, provider may take while return location fix." means have turn on gps not 3g


Comments

Post a Comment

Popular posts from this blog

c++ - llvm function pass ReplaceInstWithInst malloc -

-
#include "llvm/pass.h" #include "llvm/ir/module.h" #include "llvm/ir/function.h" #include "llvm/support/raw_ostream.h" #include "llvm/ir/legacypassmanager.h" #include "llvm/ir/instrtypes.h" #include "llvm/transforms/ipo/passmanagerbuilder.h" #include "llvm/ir/irbuilder.h" #include "llvm/transforms/utils/basicblockutils.h" using namespace llvm; namespace { struct replacepass : public functionpass { static char id; replacepass() : functionpass(id) {} virtual bool runonfunction(function &f) { allocainst* insttoreplace = ??? basicblock::iterator ii(insttoreplace); replaceinstwithinst(insttoreplace->getparent()->getinstlist(), ii, new allocainst(type::int32ty, 0, insttoreplace)); return true; } }; } char replacepass::id = 0; static void registerreplacepass(const passmanagerbuilder &, legacy::passmanagerbase &pm) { pm.add(new re
Read more

java.lang.NoClassDefFoundError When Creating New Android Project -

-
i've tried installing (and re-installing) android studio several times now, , each time, studio isn't able create new android project. when attempt initial android studio window (ie. basic 'create', 'open', 'import' etc options), i'm asked of questions in wizard, brief progress dialog, followed nothing @ all. if open incomplete project process creates choosing 'open' list, can try choosing create new android project menu. this has same issue, error message in output console time... java.lang.noclassdeffounderror: com/sun/xml/internal/bind/v2/model/annotation/annotationreader (wrong name: com/sun/xml/internal/bind/v0/model/qnnotation/annotationreader) note: when installed android studio, installed incompatible jdk (1.8, not 1.7). have had go default project settings change jdk uses 1.8. does know how can avoid this? there place should downloading jxb classes? missing in java paths? this appears have been caused cor
Read more

Decoding a Python 2 `tempfile` with python-future -

-
i'm attempting write python 2/3 compatible routine fetch csv file, decode latin_1 unicode , feed csv.dictreader in robust, scalable manner. for python 2/3 support, i'm using python-future including imporing open builtins , , importing unicode_literals consistent behaviour i'm hoping handle exceptionally large files spilling disk, using tempfile.spooledtemporaryfile i'm using io.textiowrapper handle decoding latin_1 encoding before feeding dictreader this works fine under python 3. the problem textiowrapper expects wrap stream conforms bufferediobase . unfortunately under python 2, although have imported python 3-style open , vanilla python 2 tempfile.spooledtemporaryfile still of course returns python 2 cstringio.stringo , instead of python 3 io.bytesio required textiowrapper . i can think of these possible approaches: wrap python 2 cstringio.stringo python 3-style io.bytesio . i'm not sure how approach - need write such wrapper or 1 ex
Read more