Note that @SuppressWarnings only has source retention, so it will not make it to the bytecode jar library, and so Android Lint will still potentially report a warning for any developers that use this library in their Android app.

For this reason, Android Lint only looks for @SuppressLint in the bytecode. It can come from any package, so you may want to just create your own SuppressLint annotation (see internal bug for example).