[Resolved] You must have AdActivity declared in AndroidManifest.xml with configChanges

You must have AdActivity declared in AndroidManifest.xml with configChanges.

Solution

Add the following Activity in AndroidManifest.xml file.

<application ...>

<activity android:name="com.google.ads.AdActivity"

android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize" />

</application>