android - Error inflating class fragment while trying to use Google Maps -

i'm trying run simple demo app of google maps. i've referred standard article.

but i'm getting error inflating class fragment exception.

i've updated mt manifest properly. registered map api key. install google-play-services , linked current project. extended activity fragmentactivity, still doesn't work.

am doing wrong?

i referred error inflating class fragment no avail. appreciated.

my code follows: activity_main.xml

<relativelayout 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=".mainactivity" >      <fragment         android:id="@+id/map"         android:layout_width="match_parent"         android:layout_height="match_parent"         class="com.google.android.gms.maps.mapfragment" />  </relativelayout>  

---

mainactivity.java

package com.android.googlemapsdemo;  import android.os.bundle; import android.support.v4.app.fragmentactivity; import android.widget.toast;  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.marker; import com.google.android.gms.maps.model.markeroptions;  public class mainactivity extends fragmentactivity {     static final latlng hamburg = new latlng(53.558, 9.927);     static final latlng kiel = new latlng(53.551, 9.993);     private googlemap map;      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);         map = ((mapfragment) getfragmentmanager().findfragmentbyid(r.id.map))                 .getmap();         if (map != null) {             marker hamburg = map.addmarker(new markeroptions()                     .position(hamburg).title("hamburg"));             marker kiel = map.addmarker(new markeroptions()                     .position(kiel)                     .title("kiel")                     .snippet("kiel cool")                     .icon(bitmapdescriptorfactory                             .fromresource(r.drawable.ic_launcher)));              // move camera instantly hamburg zoom of 15.             map.movecamera(cameraupdatefactory.newlatlngzoom(hamburg, 15));              // zoom in, animating camera.             map.animatecamera(cameraupdatefactory.zoomto(10), 2000, null);         } else {             map = ((mapfragment) getfragmentmanager()                     .findfragmentbyid(r.id.map)).getmap();             if (map == null) {                 toast.maketext(mainactivity.this, "unable generate map",                         toast.length_short).show();             }         }     } } 

---

androidmanifest.xml

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="com.android.googlemapsdemo"     android:versioncode="1"     android:versionname="1.0" >      <uses-sdk         android:minsdkversion="11"         android:targetsdkversion="19" />      <permission         android:name="com.android.googlemapsdemo.permission.maps_receive"         android:protectionlevel="signature" />      <uses-feature         android:glesversion="0x00020000"         android:required="true" />      <uses-permission android:name="com.android.googlemapsdemo.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" />      <application         android:allowbackup="true"         android:icon="@drawable/ic_launcher"         android:label="@string/app_name"         android:theme="@style/apptheme" >         <activity             android:name="com.android.googlemapsdemo.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="aizasyat9_v5yi-7cmf_yta0y_zedfpzeh5xfl0" />         <meta-data             android:name="com.google.android.gms.version"             android:value="@integer/google_play_services_version" />     </application>  </manifest> 

change

 <uses-sdk     android:minsdkversion="11" 

to

 <uses-sdk     android:minsdkversion="12" 

if have 11 using supportmapfragment. consider this

https://developer.android.com/about/dashboards/index.html?utm_source=ausdroid.net

looking @ link better change 12

change

public class mainactivity extends fragmentactivity  

to

public class mainactivity extends activity   

also getmap() can return null. better check availability of google map services.

you missing

<uses-permission android:name="android.permission.access_network_state"/> 

in manifest file

https://developers.google.com/maps/documentation/android/start#getting_the_google_maps_android_api_v2

you can remove

  <permission     android:name="com.android.googlemapsdemo.permission.maps_receive"     android:protectionlevel="signature" /> 

and this

 <uses-permission android:name="com.android.googlemapsdemo.permission.maps_receive" />