Live wallpapers don’t remain as static background images but instead have interactive features. Learn how to create a live wallpaper in this tutorial.
Android Design V2: Now with stencils
(android-developers.blogspot.com)
The fine folks on the Android User Experience team are pleased to release some official Android Design stencils for your mockup-creating pleasure.
How to make an Android game
(caseyrichard.com)
Here you have another nice tutorial series how to make an Android game.
Android Lint tool in IntelliJ IDEA 11.1
(blogs.jetbrains.com)
GreenDroid
(github.com)
GreenDroid is a development library for the Android platform. It is intended to make UI developments easier and consistent through your applications.
Ruboto - Ruby on Android
(github.com)
A platform for developing apps using JRuby on Android.
Android applications have historically been limited to a maximum size of 50MB.
Unity 3
(store.unity3d.com)
Unity 3 is a game development tool that has been designed to let you focus on creating amazing games.
A quick demo video creating, editing and running an Android App with AIDE on a Galaxy S2 phone.
AIDE
(play.google.com)
AIDE is an integrated development environment (IDE) for developing real Android Apps directly on Android devices.