JRuby sounds risky on Harmony. The people behind it focus on J2EE and Rails.
The Eclipse Android plugin is solid and comes with a user interface builder. Not the best tool in the world, much worse than Microsoft Blend but on par with Samsung Bada for Eclipse. Eclipse really is a fantastic IDE.
Remember that multitouch is the big feature and that all helper API´s are Java. This might bite you in the ass later in the project if you go the "interesting" route.
Comments
JRuby sounds risky on Harmony. The people behind it focus on J2EE and Rails.
The Eclipse Android plugin is solid and comes with a user interface builder. Not the best tool in the world, much worse than Microsoft Blend but on par with Samsung Bada for Eclipse. Eclipse really is a fantastic IDE.
Remember that multitouch is the big feature and that all helper API´s are Java. This might bite you in the ass later in the project if you go the "interesting" route.