title: Honeycomb notifications - How to set largeIcon to the right size?
body: <p>I find myself curious why the setLargeIcon method on Notification.Builder only accepts a Bitmap, with no overload to provide a resource id. Perhaps it was done for performance reasons, but it seems odd as setSmallIcon does accept a res drawable id.</p>
  
  <pre><code>Notification.Builder builder = new Notification.Builder(application);
  // ....
  builder.setLargeIcon(iconBitmap);  // Requires a Bitmap
  builder.setSmallIcon(iconResId);   // Requires a drawable resource ID
  Notification notification = builder.getNotification();
  </code></pre>
  
  <p>Sadly the bitmap provided is not scaled in the notification, so the Bitmap needs to be provided exactly the right size for the notification view.</p>
  
  <p>Assuming I need to provide xhdpi, hdpi, mdpi and ldpi versions of the largeIcon bitmap, what sizes do they need to be? I can see no mention in the docs, or after scouring the wider web.</p>