Google recently started its Android Design site where developers can find information about how Google thinks applications can be developed to match the new look and spirit of Android. Now Mountain View is continuing its demarche telling developers why they should migrate designs away from using the Menu button and toward using the action bar.
Once Honeycomb landed it removed the need for physical buttons, introducing the ActionBar class “as the standard solution to make actions from the user options immediately visible and quick to invoke”. According to the recent blog post, few lines of code changes can enabled developers to support both pre-Honeycomb devices with buttons and more recent ones (like those running Ice Cream Sandwich) that rely on the action bar.
If you’re a developer or just a user curious to see another bit of Google’s vision to unify, as much as possible, the Android experience across devices (especially the recent ones), check out the source link below for more details.
Source: Android Developers