My android application, built inside Eclipse, suddenly fails to build with dozens of errors. The most obvious are errors indicating that all the android imports cannot be resolved.
It seems that your
eclipse-workspace (or at least your
Project) is broken somehow.
Have you moved your
android-sdk/Project recently? If it's not an Android Project anymore, try to look at
Preferences->Android for a valid
If this is correct, try to open a complete new Workspace, and import your sources with
File->import->Android Project from existing Source.
If this still doesn't help, make a new android
Project and copy the sources manually inside your
Project from outside
Eclipse. Re-open Eclipse after that, and make a