Mark Allisons 5th post about styling the ActionBar. You should check out the past posts if you haven't already.
"pixels, density, dpi, dip, dp, dps, sp, sip" for a novice developer Android units can be pretty confusing. Luckily Edwin Evans created a nice blog post to explain them all.
Android Development Tutorial - 4.1
Lars Vogel has updated his entry level Android Development Tutorial. The tutorial is a pretty comprehensive and covers the complete development stack. If you want to start Android Development, be sure you'll start here.
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Otto is an enhanced Guava-based event bus with emphasis on Android support. When you create large applications it is necessary to decouple different components while keeping the communication between them easy.
Photoview 1.1, by Chris Banes, has been released. Photoview is an advanced image view which makes pinching and zooming easy. See his introductionary blog post for more information.
WebImageLoader, by Alexander Blom, is a library designed to take to hassle out of handling images on the web.
The crouton library is an conceptual enhancement of Toasts. Read this blog posts if you had cases where Notifications via Toasts were not enough.
Facebook SDK 3.0 for Android released. Head over to the dev center and grab it while it's hot.
Google Play Developer Console
The new Google Play Developer console should help you to publish and monitor your apps. It's sleeker, faster, easier to navigate and it saves you time when you're publishing your apps.
Choosing the right libraries to get things done can be a tough job. We've compiled a lot of them that we've found during the last years of Android development.