android - Finding Current Location and navigate to it not working -

hi develop app find current location , navigate current location. running on real device getting error "unfortunately current location has stopped". why getting error when correct...???? how can overcome it.... regards

main activtiy code

package com.example.routetracker;  import com.google.android.gms.maps.cameraupdatefactory; import com.google.android.gms.maps.googlemap; import com.google.android.gms.maps.mapfragment; import com.google.android.gms.maps.model.bitmapdescriptorfactory; import com.google.android.gms.maps.model.latlng; import com.google.android.gms.maps.model.markeroptions;  import android.location.location; import android.location.locationlistener; import android.location.locationmanager; import android.os.bundle; import android.annotation.suppresslint; import android.app.activity; import android.content.context; import android.view.menu; import android.widget.toast;  public class mainactivity extends activity { googlemap map; locationmanager lm;  @suppresslint("newapi") @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);        lm = (locationmanager) getsystemservice(context.location_service);      map = ((mapfragment) getfragmentmanager().findfragmentbyid(r.id.map))              .getmap();      map.setmylocationenabled(true);       locationlistener ll = 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) {       toast.maketext(getapplicationcontext(),      (int) (location.getlatitude() + location.getlongitude()),      toast.length_long).show();       map.addmarker(new markeroptions()      .position(new latlng(location.getlatitude(), location.getlongitude()))      .title("my position")      .icon(bitmapdescriptorfactory      .defaultmarker(bitmapdescriptorfactory.hue_azure)));       map.animatecamera(cameraupdatefactory.newlatlngzoom(new latlng(      location.getlatitude(), location.getlongitude()), 15.0f));       }      };      lm.requestlocationupdates(locationmanager.gps_provider, 0, 0, ll);       }       } 

manifest is

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.routetracker" android:versioncode="1" android:versionname="1.0" >  <uses-sdk     android:minsdkversion="12"     android:targetsdkversion="17" />  <uses-feature     android:glesversion="0x00020000"     android:required="true" />  <uses-permission android:name="android.permission.internet" /> <uses-permission android:name="android.permission.access_network_state" /> <uses-permission android:name="android.permission.write_external_storage" /> <uses-permission       android:name="com.google.android.providers.gsf.permission.read_gservices" /> <!--  following 2 permissions not required use  google maps android api v2, recommended. --> <uses-permission android:name="android.permission.access_coarse_location" /> <uses-permission android:name="android.permission.access_fine_location" />  <permission     android:name="com.example.routetracker.maps_receive"     android:protectionlevel="signature" />  <uses-permission android:name="com.example.routetracker.permission.maps_receive" />  <application     android:allowbackup="true"     android:icon="@drawable/ic_launcher"     android:label="@string/app_name"     android:theme="@style/apptheme" >     <activity         android:name="com.example.routetracker.mainactivity"         android:label="@string/app_name" >         <intent-filter>             <action android:name="android.intent.action.main" />              <category android:name="android.intent.category.launcher" />         </intent-filter>     </activity>               <meta-data         android:name="com.google.android.maps.v2.api_key"         android:value="aizasydizp29y9vgjmdlgr-po6p0gzuxvukefco" /> </application>  </manifest> 

xml

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" xmlns:map="http://schemas.android.com/apk/res-auto" android:id="@+id/linearlayout1" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" >  <fragment         android:id="@+id/map"       android:layout_width="match_parent"       android:layout_height="match_parent"       android:name="com.google.android.gms.maps.mapfragment"       /> </linearlayout>