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The Welcome app looks solid; great to see the integration of the new layout editor. The Tip Calculator app is a pretty cool example and definitely a useful app; I love the deeper coverage of the lifecycle. The Favorite Twitter Searches app is a good way to demonstrate ScrollView.
The Flag Quiz app is
one of my favorites, covering delayed events, View animations and
string arrays; I like the use of the AssetManager for the flags. The XML
declaration and explanation of the tweened flag-shake animation is
nicely done.
The SpotOn Game app is one of my favorites; it does
an excellent job in covering the new Honeycomb+ property animations, and
uses them in a creative way to build a surprisingly fun little game.
Nice job of keeping the database queries out of the UI thread in the Address Book app. It’s great how the Route Tracker app chapter puts so much useful MapView information in one place. Slideshow is a beautiful app.