Update to ADT 16 and use Android Lint. It is really amazing tool.
Android Lint is a new tool for ADT 16 (and Tools 16) which scans Android project sources for potential bugs.
Here are some examples of the types of errors that it looks for:
- Missing translations (and unused translations)
- Layout performance problems (all the issues the old layoutopt tool used to find, and more)
- Unused resources
- Inconsistent array sizes (when arrays are defined in multiple configurations)
- Accessibility and internationalization problems (hardcoded strings, missing contentDescription, etc)
- Icon problems (like missing densities, duplicate icons, wrong sizes, etc)
- Usability problems (like not specifying an input type on a text field)
- Manifest errors
and many more.