Source code for my blog, (http://www.buzzingandroid.com)

• content.QueryBuilder: Making querying your content provider easier and less error-prone (http://www.buzzingandroid.com/2012/11/making-queries-easier-with-querybuilder/)
• tabswipe.TabSwipeActivity: Base class for implementing tab swipe between fragments using ActionBarSherlock (http://www.buzzingandroid.com/2012/11/tab-swipe-between-fragments-using-actionbarsherlock/)
• ui.HSVColorPickerDialog: A two-part color picker based on the HSV color model (http://www.buzzingandroid.com/2012/11/hsv-color-picker-dialog/)
• ui.ViewAspectRatioMeasurer: A helper class that will help you measure your custom Views that respect an aspect ratio (http://www.buzzingandroid.com/2012/11/easy-measuring-of-custom-views-with-specific-aspect-ratio/)