Android GoogleMap or SupportMapFragment - null pointer exception -

in app showing google map version2 in fragment. null pointer exception @

mmap = ((supportmapfragment) getfragmentmanager().findfragmentbyid(r.id.map)).getmap();

this full code:

    public class searchresultmap extends fragment{      private googlemap mmap;      @override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);     }      @override     public view oncreateview(layoutinflater inflater, viewgroup container,             bundle savedinstancestate) {         view fragmentview = inflater.inflate(r.layout.map, container, false);          mmap = ((supportmapfragment) getfragmentmanager().findfragmentbyid(r.id.map)).getmap(); // line no : 28           mmap.addmarker(new markeroptions() .position(new latlng(xxxxxx,xxxxxx)) .title("current location")          .icon(bitmapdescriptorfactory.fromresource(r.drawable.ball_pointer))          .snippet("xxxxx"));          return fragmentview;     }      @override     public void onactivitycreated(bundle savedinstancestate) {         super.onactivitycreated(savedinstancestate);     }  } 

xml:

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

manifest xml:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="com.fssd.spot"     android:versioncode="1"     android:versionname="1.0" >      <uses-sdk         android:minsdkversion="8"         android:targetsdkversion="17" />      <permission         android:name="com.fssd.spot.permission.maps_receive"         android:protectionlevel="signature" />      <uses-feature         android:glesversion="0x00020000"         android:required="true" />      <uses-permission android:name="com.fssd.spot.permission.maps_receive" />     <uses-permission android:name="android.permission.internet" />     <uses-permission android:name="android.permission.write_external_storage" />     <uses-permission android:name="com.google.android.providers.gsf.permission.read_gservices" />     <uses-permission android:name="android.permission.access_coarse_location" />     <uses-permission android:name="android.permission.access_fine_location" />     <uses-permission android:name="android.permission.access_network_state" />      <application         android:allowbackup="true"         android:icon="@drawable/ic_launcher"         android:label="@string/app_name"         android:theme="@style/apptheme" >         <activity             android:name="com.fssd.spot.splashscreen"             android:theme="@android:style/theme.light.notitlebar"             android:nohistory="true"             android:screenorientation="portrait" >             <intent-filter>                 <action android:name="android.intent.action.main" />                  <category android:name="android.intent.category.launcher" />             </intent-filter>         </activity>         <activity             android:name="com.fssd.spot.mainactivity"             android:screenorientation="portrait"             android:theme="@style/tabtheme" >         </activity>          <meta-data             android:name="com.google.android.maps.v2.api_key"             android:value="xxxxxxxxxxxxxxxxxxxxxxxx" />      </application>  </manifest> 

whole log cat:

fatal exception: main java.lang.nullpointerexception @ com.fssd.spot.search.searchresultmap.oncreateview(searchresultmap.java:28) @ android.support.v4.app.fragment.performcreateview(fragment.java:1478) @ android.support.v4.app.fragmentmanagerimpl.movetostate(fragmentmanager.java:927) @ android.support.v4.app.fragmentmanagerimpl.movetostate(fragmentmanager.java:1104) @ android.support.v4.app.backstackrecord.run(backstackrecord.java:682) @ android.support.v4.app.fragmentmanagerimpl.execpendingactions(fragmentmanager.java:1460) @ android.support.v4.app.fragment.performstart(fragment.java:1499) @ android.support.v4.app.fragmentmanagerimpl.movetostate(fragmentmanager.java:957) @ android.support.v4.app.fragmentmanagerimpl.movetostate(fragmentmanager.java:1104) @ android.support.v4.app.backstackrecord.run(backstackrecord.java:682) @ android.support.v4.app.fragmentmanagerimpl.execpendingactions(fragmentmanager.java:1460) @ android.support.v4.app.fragmentmanagerimpl$1.run(fragmentmanager.java:440) @ android.os.handler.handlecallback(handler.java:587) @ android.os.handler.dispatchmessage(handler.java:92) @ android.os.looper.loop(looper.java:130) @ android.app.activitythread.main(activitythread.java:3683) @ java.lang.reflect.method.invokenative(native method) @ java.lang.reflect.method.invoke(method.java:507) @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:875) @ com.android.internal.os.zygoteinit.main(zygoteinit.java:633) @ dalvik.system.nativestart.main(native method) 

try change this:

fragmentmanager myfm = getactivity().getsupportfragmentmanager();  final supportmapfragment mymapf = (supportmapfragment) myfm                 .findfragmentbyid(r.id.map);