The framework will crash if run in portrait mode on large devices. This is because the main.xml file in folder layout-large-port has an unidentified class in it for the ItemDetailFragment as follows:

class="com.finchframework.uiframework.ItemDetailFr agment"


Comparing to the main.xml in layout-large this should probably be

class="com.enterpriseandroidbook.fragmentframework .ItemDetailFragment"

3 months later I see the same error. It's in large-port/main.xml. You only get an exception when starting the app in portrait mode. It doesn't happen when you start in landscape and then rotate it (I am using a Nexus 7 AVD).