android - Google Map API v2 is not showing Map on device -

i running sample code provided on google map documentation google map api v2 (https://developers.google.com/maps/documentation/android/start#specify_settings_in_the_application_manifest).

the code run map not loaded on device. white screen shown on device. using 4.0.3 version android device.

1) enabled service project.

2) generated key:

3) "google-play-services_lib" library in project:

4) android manifest:

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="com.example.mapdemo"     android:versioncode="1"     android:versionname="1.0" >      <uses-sdk         android:minsdkversion="8"         android:targetsdkversion="17" />      <uses-feature         android:glesversion="0x00020000"         android:required="true" />      <permission         android:name="com.example.mapdemo.permission.maps_receive"         android:protectionlevel="signature" />      <uses-permission android:name="com.example.mapdemo.permission.maps_receive" />     <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" />     <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" >          <meta-data             android:name="com.google.android.maps.v2.api_key"             android:value="aizasycvzrhq8ybfyybvtic3dsdu2o06namhpg4" />          <activity             android:name="com.example.mapdemo.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>     </application> </manifest> 

5) activity:

package com.example.mapdemo;  import android.app.activity; import android.os.bundle; import android.view.menu;  public class mainactivity extends activity  {      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.main);           }     @override     public boolean oncreateoptionsmenu(menu menu) {          getmenuinflater().inflate(r.menu.main, menu);         return true;     } } 

6) layout:

<?xml version="1.0" encoding="utf-8"?> <fragment xmlns:android="http://schemas.android.com/apk/res/android"           android:id="@+id/map"           android:layout_width="match_parent"           android:layout_height="match_parent"           android:name="com.google.android.gms.maps.mapfragment"/> 

use fragment activity

eg:

public class maps extends fragmentactivity {     googlemap map;     double lat;     double lan;     boolean flag = false;      // private locationmanager lm;     @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.mapptry);          map = ((supportmapfragment) getsupportfragmentmanager()                 .findfragmentbyid(r.id.map)).getmap();                  }   } 

change ur map.xml

<fragment     android:id="@+id/map"     android:name="com.google.android.gms.maps.supportmapfragment"     android:layout_width="wrap_content"     android:layout_height="match_parent" /> 

edit

got

import android.support.v4.app.fragmentactivity;

before right click project->properties->buildpath->java build path -> libraries .. click on add external jars

the go to

user\android-sdks\extras\android\support\v4

and select android-support-v4.jar

ps: provided api key correct . if api key wrong shows white screen