android - LocationManager.GPS_PROVIDER return 0.0 -

what problem code. want current location gps ,but every time lat , lng 0.0 .

locationmanager=(locationmanager)this.getsystemservice(context.location_service); locationlistener=new locationlistener() {      @override     public void onstatuschanged(string provider, int status, bundle extras) {         // todo auto-generated method stub      }     @override     public void onproviderenabled(string provider) {         // todo auto-generated method stub      }     @override     public void onproviderdisabled(string provider) {         // todo auto-generated method stub      }     @override     public void onlocationchanged(location location) {         latitude=location.getlatitude();         longitude=location.getlongitude();          currentpostion();         toast.maketext(getapplicationcontext(), latitude+"<(lat,lng)>"+longitude, toast.length_short).show();     } }; locationmanager.requestlocationupdates(locationmanager.gps_provider, 15000, 0, locationlistener); 

method currentpostion draw icon on map of current position.

public void currentpostion(){     if(latitude!=0.0 && longitude!=0.0){     markeroptions options=new markeroptions();     options.position(new latlng(latitude, longitude));     options.icon(bitmapdescriptorfactory.fromresource(r.drawable.myicon));     googlemap.addmarker(options);     cameraposition cameraposition = new cameraposition.builder().target(new latlng(latitude,longitude)).zoom(17).build();             googlemap.animatecamera(cameraupdatefactory.newcameraposition(cameraposition));     } } 

i have permissions:

<uses-permission android:name="android.permission.access_network_state" /> <uses-permission android:name="android.permission.internet" /> <uses-permission android:name="com.google.android.providers.gsf.permission.read_gservices" /> <uses-permission android:name="android.permission.write_external_storage" /> <!-- required show current location --> <uses-permission android:name="android.permission.access_coarse_location" /> <uses-permission android:name="android.permission.access_fine_location" /> 

result:

0.0<(lat,lng)>0.0

try changing line

 latitude=location.getlatitude();     longitude=location.getlongitude(); 

for one

latitude = double.tostring(location.getlatitude());             longitude= double.tostring(location.getlongitude())