Our RecyclerView.Adapter is very inefficient

[murraycu]

The RecyclerView.Adapter uses a Cursor to use the data from our ContentProvider:
https://github.com/murraycu/android-galaxyzoo/blob/master/app/src/main/java/com/murrayc/galaxyzoo/app/ListCursorAdapter.java

But it's horribly inefficient, calling notifyDataSetChanged() whenever there is any change in the cursor, making the RecyclerView do work for each item all over again.

[murraycu]

There's still no obvious way to do this correctly with RecyclerView: https://github.com/googlesamples/android-RecyclerView/issues/4#issuecomment-87246333