Ad Size and Ad unit id must be set before loadAd is called

I found solution in the github example, that is:

instead of

xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"

delete the xmlns:ads*** tag and add

xmlns:ads="http://schemas.android.com/apk/res-auto"

tag to your LinearLayout tag as follow:

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"          xmlns:ads="http://schemas.android.com/apk/res-auto"          android:orientation="vertical"          android:layout_width="match_parent"          android:layout_height="match_parent"><TextView android:layout_width="match_parent"          android:layout_height="wrap_content"          android:text="@string/hello"/><com.google.android.gms.ads.AdView android:id="@+id/adView"                       android:layout_width="match_parent"                       android:layout_height="wrap_content"                       ads:adSize="BANNER"                       ads:adUnitId="INSERT_YOUR_AD_UNIT_ID_HERE"/></LinearLayout>

That's it :)

github link for this xml

Warning: Make sure you set the ad size and ad unit ID in the same manner (i.e. set both in XML or both programmatically).

https://developers.google.com/admob/android/banner

This is going to be vague as you have not stated what type of view your XML file is (Relative, Linear etc.)

In my application with a scrollable relative layout I have included:

<RelativeLayout    android:id="@+id/test"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:layout_below="@+id/TextView07"    android:paddingTop="20dp" ></RelativeLayout>

Now inside my actual class that I wan't the ad I have included:

private AdView adView;/* Your ad unit id. Replace with your actual ad unit id. */private static final String AD_UNIT_ID = "ca-app-pub-xxxxxx/yyyyyy";/** * Simply loads the xml about page layout to display the text. */public void onCreate(Bundle start) {    super.onCreate(start);    setContentView(R.layout.about);    final TelephonyManager tm = (TelephonyManager) getBaseContext()            .getSystemService(Context.TELEPHONY_SERVICE);    //String deviceid = tm.getDeviceId();    adView = new AdView(this);    adView.setAdSize(AdSize.SMART_BANNER);    adView.setAdUnitId(AD_UNIT_ID);    // Add the AdView to the view hierarchy. The view will have no size    // until the ad is loaded.    RelativeLayout layout = (RelativeLayout) findViewById(R.id.test);    layout.addView(adView);    // Create an ad request. Check logcat output for the hashed device ID to    // get test ads on a physical device.    AdRequest adRequest = new AdRequest.Builder()    .build();            //.addTestDevice(AdRequest.DEVICE_ID_EMULATOR)            //.addTestDevice(deviceid).build();    // Start loading the ad in the background.    adView.loadAd(adRequest);}

Now ideally you want to use a smart banner to optimise your layout for all devices, as I have above, this is standard now.

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