1. What are android.app.Fragments?
Little shards of glass
Little shards of code encapsulating layout and controller

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2. How does the layout xml of a fragment differ from that of an activity?
Not at all
They use the fragment xml tag

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3. How is a Fragment class typically structured differently than an Activity class? (Choose all that apply.)
Fragments extend android.app.Fragment while Activities extend android.app.Activity
Fragments have a more complex lifecycle, so more callback methods
Activities can have onClickListeners, but Fragments cannot

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