I am integrating AdMob into my android application.

I have followed the directions on the admob site to a T.In my attrs.xml I have the following.

```
<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="com.google.ads.AdView">
        <attr name="adSize">
            <enum name="BANNER" value="1" />
            <enum name="IAB_MRECT" value="2" />
            <enum name="IAB_BANNER" value="3" />
            <enum name="IAB_LEADERBOARD" value="4" />
        </attr>
        <attr name="adUnitId" format="string" />
    </declare-styleable>
</resources>

```

And I setup the View in my main.xml

```
 <com.google.ads.AdView android:id="@+id/adView"
                               android:layout_width="wrap_content"
                               android:layout_height="wrap_content"
                               ads:adUnitId="MYID"
                               ads:adSize="BANNER" /

```

>

When viewing the main.xml in Graphical Layout it is giving an error on the AdView

```
Adview missing required XML Attribute "adSize"

```

Wondering if I have done something wrong?