I have this in my main xml file:
<com.google.android.gms.ads.AdView
xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
ads:adUnitId="******************"
ads:adSize="BANNER"
android:id="@+id/adView"/>
I have already set the ad size and unit id, but when this is run (from MainActivity.java),
AdView adView = (AdView)this.findViewById(com.example.lovetestactual.R.id.adView);
AdRequest adRequest = new AdRequest.Builder().build();
adView.loadAd(adRequest);
It threw an exception of what is in the title.
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 :)