<uses-library android:name="string" />
<application>
All of the android
packages (such as android.app,
android.content, android.view, and android.widget)
are in the default library that all applications are automatically linked
against. However, some packages (such as maps
and awt
are
in separate libraries that are not automatically linked. Consult the
documentation for the packages you're using to determine which library
contains the package code.