I get the Error
Unable to start activity ComponentInfo{de.androidbuch.activiti/de.androidbuch.activiti.task.Activity}: android.view.InflateException: Binar
I had a similar problem; after running the AdMob example, I tried to insert Ads in my app, causing this error:
01-02 16:48:51.269 8199-8199/it.dndc.BreathPlot E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.IllegalStateException: Could not execute method of the activity
Caused by: android.view.InflateException: Binary XML file line #57: Error inflating class fragment
The solution is: you cannot insert the fragment for an Ad into a ListActivity. Instead, I could add it to a FragmentActivity and to an ActionBarActivity without any problem.
My suggestion is: start from the AdMob example and add into it your existing app: I would have saved a lot of time !!!