Android : How to use admob in android webview?

Hi all I am using admob in android webview. When i integrated admob and run, it displays following error. My code is as follows:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<com.google.ads.AdView
    android:id="@+id/adViews"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_alignParentTop="false"
    android:layout_centerHorizontal="true"
    ads:adSize="BANNER"
    ads:adUnitId="ca-123456" >
</com.google.ads.AdView>

<LinearLayout
    android:layout_alignParentTop="true"
    android:layout_above="@id/adView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <ProgressBar
        android:id="@+id/progressBar1"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
   />

    <WebView
        android:id="@+id/webView1"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1" />
</LinearLayout>

in code i used as: private InterstitialAd interstitial; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); overridePendingTransition(R.anim.trans_left_in, R.anim.trans_left_out); setContentView(R.layout.activity_news);

     interstitial = new InterstitialAd(News.this);
        // Insert the Ad Unit ID
        interstitial.setAdUnitId("ca-app123456");

        //Locate the Banner Ad in activity_main.xml
        AdView adView = (AdView) this.findViewById(R.id.adViews);

        // Request for Ads
        AdRequest adRequest = new AdRequest.Builder()

        // Add a test device to show Test Ads..comment for real app when launching
         .addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
         .addTestDevice("CC5F2C72DF2B356BBF0DA198")
                .build();

        // Load ads into Banner Ads
        adView.loadAd(adRequest);

        // Load ads into Interstitial Ads
        interstitial.loadAd(adRequest);

        // Prepare an Interstitial Ad Listener
        interstitial.setAdListener(new AdListener() {
            public void onAdLoaded() {
                // Call displayInterstitial() function
                displayInterstitial();
            }
        });
    }
    public void displayInterstitial() {
        // If Ads are loaded, show Interstitial else show nothing.
        if (interstitial.isLoaded()) {
            interstitial.show();
        }

    web=(WebView)findViewById(R.id.webView1);

    web.setWebViewClient(new WebViewClient());
    pb=(ProgressBar)findViewById(R.id.progressBar1);
    ActionBar ab=getActionBar();
    ColorDrawable cd=new ColorDrawable(Color.parseColor("#000000"));
    ab.setBackgroundDrawable(cd);
    ab.setDisplayHomeAsUpEnabled(true);

    WebSettings ws=web.getSettings();
    ws.setBuiltInZoomControls(true);
    web.setWebViewClient(new WebViewClient());

    web.setWebChromeClient(new WebChromeClient() {
      //showing webview
     }
     }

When i run the code it displays following error:

   08-10 13:23:50.241: E/AndroidRuntime(13873): FATAL EXCEPTION: main

08-10 13:23:50.241: E/AndroidRuntime(13873): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.all.news/com.all.news.News}: android.view.InflateException: Binary XML file line #7: Error inflating class com.google.ads.AdView 08-10 13:23:50.241: E/AndroidRuntime(13873): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2306) 08-10 13:23:50.241: E/AndroidRuntime(13873): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2358) 08-10 13:23:50.241: E/AndroidRuntime(13873): at android.app.ActivityThread.access$600(ActivityThread.java:156) 08-10 13:23:50.241: E/AndroidRuntime(13873): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1340) 08-10 13:23:50.241: E/AndroidRuntime(13873): at android.os.Handler.dispatchMessage(Handler.java:99) 08-10 13:23:50.241: E/AndroidRuntime(13873): at android.os.Looper.loop(Looper.java:153) 08-10 13:23:50.241: E/AndroidRuntime(13873): at android.app.ActivityThread.main(ActivityThread.java:5297) 08-10 13:23:50.241: E/AndroidRuntime(13873): at java.lang.reflect.Method.invokeNative(Native Method) 08-10 13:23:50.241: E/AndroidRuntime(13873): at java.lang.reflect.Method.invoke(Method.java:511) 08-10 13:23:50.241: E/AndroidRuntime(13873): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833) 08-10 13:23:50.241: E/AndroidRuntime(13873): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600) 08-10 13:23:50.241: E/AndroidRuntime(13873): at dalvik.system.NativeStart.main(Native Method) 08-10 13:23:50.241: E/AndroidRuntime(13873): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class com.google.ads.AdView 08-10 13:23:50.241: E/AndroidRuntime(13873): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:698) 08-10 13:23:50.241: E/AndroidRuntime(13873): at android.view.LayoutInflater.rInflate(LayoutInflater.java:746) 08-10 13:23:50.241: E/AndroidRuntime(13873): at android.view.LayoutInflater.inflate(LayoutInflater.java:489) 08-10 13:23:50.241: E/AndroidRuntime(13873): at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 08-10 13:23:50.241: E/AndroidRuntime(13873): at android.view.LayoutInflater.inflate(LayoutInflater.java:352) 08-10 13:23:50.241: E/AndroidRuntime(13873): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:274) 08-10 13:23:50.241: E/AndroidRuntime(13873): at android.app.Activity.setContentView(Activity.java:1881) 08-10 13:23:50.241: E/AndroidRuntime(13873): at com.all.news.News.onCreate(News.java:35) 08-10 13:23:50.241: E/AndroidRuntime(13873): at android.app.Activity.performCreate(Activity.java:5122) 08-10 13:23:50.241: E/AndroidRuntime(13873): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1081) 08-10 13:23:50.241: E/AndroidRuntime(13873): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2270) 08-10 13:23:50.241: E/AndroidRuntime(13873): ... 11 more 08-10 13:23:50.241: E/AndroidRuntime(13873): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.ads.AdView" on path: DexPathList[dexElements=[zip file "/data/app/com.all.news-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.all.news-1, /vendor/lib, /system/lib]] 08-10 13:23:50.241: E/AndroidRuntime(13873): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:53) 08-10 13:23:50.241: E/AndroidRuntime(13873): at java.lang.ClassLoader.loadClass(ClassLoader.java:501) 08-10 13:23:50.241: E/AndroidRuntime(13873): at java.lang.ClassLoader.loadClass(ClassLoader.java:461) 08-10 13:23:50.241: E/AndroidRuntime(13873): at android.view.LayoutInflater.createView(LayoutInflater.java:552) 08-10 13:23:50.241: E/AndroidRuntime(13873): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:687) 08-10 13:23:50.241: E/AndroidRuntime(13873): ... 21 more

Please help me to sort where I am doing mistake..

Thanks in advance