rate intermediate files on the
  way to producing an <code>.apk</code>. If you are developing in Eclipse, the complete build process is
  automatically done periodically as you develop and save your code changes. If you are using other
  IDEs, this build process is done every time you run the generated Ant build script for your
  project. It is useful, however, to understand what is happening under the hood since much of the
  tools and processes are masked from you. The following diagram depicts the differ