Unable to instantiate activity ComponentInfo

Question

I am developing an application for Froyo as minimum version and Gingerbread as the target version. So, the manifest shows:

Answer 1

I had this problem as well developing under Eclipse 4.2. My main activity was referenced by the AndroidManifest.xml file, included the correct package and name, but still failed to load. After a bit of debugging and commenting out things, I discovered that an interface that my main activity was implementing was the source of the problem. This interface is defined in a separate project, but I had failed to reference that project in the Java Build Path. So, when I built things, they would build correctly, but I'd immediately encounter a force close when I launched, with the same error as this question.

To correct this, I right-clicked on the Android project, selected Java Build Path, added my 'common code' project to the Projects tab and then checked the box for that same project on the Order and Export tab. After that, everything worked.