android : java.lang.NoClassDefFoundError: com.google.android.gms.R$styleable

[Arcadester]

My activity code\[code\]package com.example.testmap;import android.os.Bundle;import android.support.v4.app.FragmentActivity;import android.view.Menu;import com.google.android.gms.maps.SupportMapFragment;public class MainActivity extends FragmentActivity {@Overrideprotected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu); return true;}}\[/code\]xml file code \[code\]<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"androidaddingBottom="@dimen/activity_vertical_margin"androidaddingLeft="@dimen/activity_horizontal_margin"androidaddingRight="@dimen/activity_horizontal_margin"androidaddingTop="@dimen/activity_vertical_margin"tools:context=".MainActivity" ><TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/hello_world" /><fragment android:id="@+id/map" android:name="com.google.android.gms.maps.SupportMapFragment" android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_marginRight="150dp" class="com.google.android.gms.maps.SupportMapFragment" />\[/code\]and manifest code \[code\]<?xml version="1.0" encoding="utf-8"?>\[/code\]\[code\]<uses-sdk android:minSdkVersion="9" android:targetSdkVersion="17" /><uses-feature android:glEsVersion="0x00020000" android:required="true" /><permission android:name="android.os.Bundle.permission.MAPS_RECEIVE" androidrotectionLevel="signature" /><uses-permission android:name="android.permission.INTERNET" /><uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /><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="com.example.mapdemo.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.testmap.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="http://stackoverflow.com/questions/15760834/AIzaSyCAdP9Sa6lOBZkovnyOuoEc7eqM3nPY" /></application>\[/code\]but I'm getting error\[code\] FATAL EXCEPTION: main java.lang.NoClassDefFoundError: com.google.android.gms.R$styleableat com.google.android.gms.maps.GoogleMapOptions.createFromAttributes(Unknown Source)at com.google.android.gms.maps.SupportMapFragment.onInflate(Unknown Source)at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:279)at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:563)at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)at android.view.LayoutInflater.inflate(LayoutInflater.java:408)at android.view.LayoutInflater.inflate(LayoutInflater.java:320)at android.view.LayoutInflater.inflate(LayoutInflater.java:276)at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:209)at android.app.Activity.setContentView(Activity.java:1657)at com.example.testmap.MainActivity.onCreate(MainActivity.java:13)at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)at android.app.ActivityThread.access$1500(ActivityThread.java:117)at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)at android.os.Handler.dispatchMessage(Handler.java:99)at android.os.Looper.loop(Looper.java:130)at android.app.ActivityThread.main(ActivityThread.java:3687)at java.lang.reflect.Method.invokeNative(Native Method)at java.lang.reflect.Method.invoke(Method.java:507)at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)at dalvik.system.NativeStart.main(Native Method)\[/code\]