Elsewhere in the web - stylingandroid.com

Mark Allison (@MarkIAllison) has written good tutorials of Android UI programming into his blog. Topics include:

• Layout Weights (part 1, part 2)
• Alert Dialog (part 1, part 2)
• Custom Controls (part 1, part 2, part 3)
• Simple Animations (part 1, part 2)
• And much more

Check out the full blog here: http://stylingandroid.com/