Get Location form GPS and set marker on google maps in android -

hi trying getting location(latitude , longitude) gps , set marker on google map not working.in code trying latitude , longitude gps location listener method onlocationchanged method never calling not showing toast.

public class mapsfragment extends fragment implements onmapreadycallback, googlemap.onmaploadedcallback {     private static view view;     private supportmapfragment mmap;     private static double latitude = 28.6538100, longitude = 77.2289700;     googlemap gmap;     private static final int permission_request_code = 1;     private mindislocationlistener locationlistener;     private locationmanager lm;      public mapsfragment() {     }       @override     public view oncreateview(layoutinflater inflater, viewgroup container,                              bundle savedinstancestate) {         fragmentmanager fm = getactivity().getsupportfragmentmanager();         supportmapfragment mmapfragment = (supportmapfragment) getactivity()                 .getsupportfragmentmanager().findfragmentbyid(r.id.map);         locationlistener = new mindislocationlistener();         lm = (locationmanager) getactivity().getsystemservice(context.location_service);         if (contextcompat.checkselfpermission(getactivity(), manifest.permission.access_fine_location)                 == packagemanager.permission_granted) {             lm.requestlocationupdates(locationmanager.gps_provider, 5000, 2, this.locationlistener);         } else {             requestpermission();         }         lm.requestlocationupdates(locationmanager.gps_provider, 5000, 2, this.locationlistener);         if (mmapfragment == null) {             mmapfragment = supportmapfragment.newinstance();             fm.begintransaction().replace(r.id.map, mmapfragment).commit();             mmapfragment.getmapasync(this);         }         view = inflater.inflate(r.layout.fragment_map, container, false);          return view;     }      @override     public void onmapready(googlemap map) {         gmap = map;         gmap.setonmaploadedcallback(this); //        drawmarker(latitude, longitude);         gmap.movecamera(cameraupdatefactory.newlatlngzoom(new                 latlng(49.39, -124.83), 20));         gmap.addmarker(new markeroptions()                 .position(new latlng(37.7750, 122.4183))                 .title("san francisco")                 .snippet("population: 776733"));         gmap.getuisettings().setzoomgesturesenabled(true);         if (contextcompat.checkselfpermission(getactivity(), manifest.permission.access_fine_location)                 == packagemanager.permission_granted) {             gmap.setmylocationenabled(true);             lm.requestlocationupdates(locationmanager.gps_provider, 5000, 2, this.locationlistener);         } else {             requestpermission();         }     }      @override     public void onactivitycreated(bundle savedinstancestate) {         super.onactivitycreated(savedinstancestate);         fragmentmanager fm = getchildfragmentmanager();         mmap = (supportmapfragment) fm.findfragmentbyid(r.id.map);         if (mmap != null) {             mmap = supportmapfragment.newinstance();             fm.begintransaction().replace(r.id.map, mmap).commit();             mmap.getmapasync(this);         }     }       private void requestpermission() {         if (activitycompat.shouldshowrequestpermissionrationale(getactivity(), manifest.permission.access_fine_location)) {             toast.maketext(getactivity(), "gps permission allows access location data. please allow in app settings additional functionality.", toast.length_long).show();         } else {             activitycompat.requestpermissions(getactivity(), new string[]{manifest.permission.access_fine_location}, permission_request_code);         }     }      public void drawmarker(double lat, double lon) {         if (gmap != null) {             markeroptions marker = new markeroptions().position(new latlng(lat, lon)).title(" maps tutorial").snippet("android ruler");             marker.icon(bitmapdescriptorfactory.defaultmarker(bitmapdescriptorfactory.hue_green));             cameraposition cameraposition = new cameraposition.builder().target(new latlng(latitude, longitude)).zoom(12).build();             gmap.animatecamera(cameraupdatefactory.newcameraposition(cameraposition));             gmap.addmarker(marker);         }     }      @override     public void onrequestpermissionsresult(int requestcode, string permissions[], int[] grantresults) {         switch (requestcode) {             case permission_request_code:                 if (grantresults.length > 0 && grantresults[0] == packagemanager.permission_granted) {                     if (activitycompat.checkselfpermission(getactivity(), manifest.permission.access_fine_location) != packagemanager.permission_granted && activitycompat.checkselfpermission(getactivity(), manifest.permission.access_coarse_location) != packagemanager.permission_granted) {                         gmap.setmylocationenabled(true);                         lm.requestlocationupdates(locationmanager.gps_provider,5000, 2, this.locationlistener);                     }                     gmap.setmylocationenabled(true);                     lm.requestlocationupdates(locationmanager.gps_provider, 5000, 2, this.locationlistener);                 } else {                   }                 break;         }     }      @override     public void onresume() {         super.onresume();         fragmentmanager fm = getchildfragmentmanager();         mmap = (supportmapfragment) fm.findfragmentbyid(r.id.map);         if (mmap != null) {             mmap = supportmapfragment.newinstance();             fm.begintransaction().replace(r.id.map, mmap).commit();             mmap.getmapasync(this);          }     }      @override     public void ondestroyview() {         super.ondestroyview();         if (mmap != null) {             mmap = null;         }     }      @override     public void onmaploaded() {     }      public class mindislocationlistener implements locationlistener {         @override         public void onlocationchanged(location location) {             log.d("location", "onlocationchanged");             drawmarker(location.getlatitude(),location.getlongitude());             toast.maketext(getactivity(), "onlocationchanged", toast.length_short).show();         }          @override         public void onstatuschanged(string provider, int status, bundle extras) {             log.d("location", "onstatuschanged");             toast.maketext(getactivity(), "onstatuschanged", toast.length_short).show();         }          @override         public void onproviderenabled(string provider) {             log.d("location", "onproviderenabled");             toast.maketext(getactivity(), "onproviderenabled", toast.length_short).show();         }          @override         public void onproviderdisabled(string provider) {             log.d("location", "onproviderenabled");             toast.maketext(getactivity(), "onproviderenabled", toast.length_short).show();         }     } } 

msnifist file this

<manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="com.deltastar.catchme" >      <uses-permission android:name="android.permission.system_alert_window" />     <uses-permission android:name="android.permission.internet" />     <uses-permission android:name="android.permission.read_contacts" />     <uses-permission android:name="android.permission.access_fine_location" />     <uses-permission android:name="android.permission.call_phone" />     <uses-permission android:name="android.permission.write_external_storage" />     <uses-permission android:name="android.permisssion.access_coarse_location" />     <uses-permission android:name="com.google.android.providers.gsf.permission.read_gservices" />     - see more at:     http://www.theappguruz.com/blog/android-take-photo-camera-gallery-code-sample#sthash.ptravzrk.dpuf     <application         android:allowbackup="true"         android:icon="@drawable/ic_logo"         android:label="@string/app_name"         android:supportsrtl="true"         android:theme="@style/apptheme" >         <activity android:name=".loginactivity" />         <activity             android:name=".registeractivity"             android:label="@string/register" >             <intent-filter>                 <action android:name="android.intent.action.main" />                  <category android:name="android.intent.category.launcher" />             </intent-filter>         </activity>         <activity             android:name=".otpverifyactivity"             android:label="@string/otp_verify" />         <activity android:name=".createprofileactivity" />         <activity android:name=".chatmemberactivity" />         <activity android:name=".creategroup" />         <activity android:name=".addmembergroup" />         <activity android:name=".meatpointname" />         <activity android:name=".mymeeting" />         <activity android:name=".chatactivity" />         <activity android:name=".groupinfo" />         <activity             android:name=".mapchat"             android:label="@string/title_activity_map_chat" />         <activity android:name=".mymeatingreq" />         <activity android:name=".userprofile" />         <activity android:name=".myprofile" />         <activity android:name=".splashscreen" />         <activity android:name=".settings" />         <activity             android:name=".drawerdemo"             android:label="@string/title_activity_drawer_demo"             android:theme="@style/apptheme" />          <!--              api key google maps-based apis defined string resource.              (see file "res/values/google_maps_api.xml").              note api key linked encryption key used sign apk.              need different api key each encryption key, including release key used              sign apk publishing.              can define keys debug , release targets in src/debug/ , src/release/.          -->         <meta-data             android:name="com.google.android.geo.api_key"             android:value="@string/google_maps_key" />          <activity             android:name=".meetingpointlocation"             android:label="@string/title_activity_create_meating_point" />         <!--              attention: auto-generated add google play services project              app indexing.  see https://g.co/appindexing/androidstudio more information.         -->         <meta-data             android:name="com.google.android.gms.version"             android:value="@integer/google_play_services_version" />          <activity             android:name=".homepage"             android:label="@string/title_activity_home_page"             android:theme="@style/apptheme" />         <activity android:name=".mylocation" />          <activity android:name="com.services.locdemo" >         </activity>     </application>  </manifest> 

fragment_map.xml

<framelayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     tools:context="com.fragment.mapsfragment">      <fragment xmlns:android="http://schemas.android.com/apk/res/android"         xmlns:tools="http://schemas.android.com/tools"         android:id="@+id/map"         android:name="com.google.android.gms.maps.supportmapfragment"         android:layout_width="match_parent"         android:layout_height="match_parent" /> </framelayout> 

your code works perfect. have move device in place gps available, because place testing app may not have exposure gps satellite. onlocationchanged() called once gps detected device