StickyGridHeaders is an Android library that provides a GridView that shows items in sections with headers. By default the section headers stick to the top like the People app in Android 4.x but this can be turned off. StickyGridHeaders also automatically sizes its rows to the largest item in the row.
Reactive layer (similar to the pattern repository) for the Realm. Main idea is using reactive layer for access to the Realm. If you make a request to the layer always return Observable. The layer will remember the entity, the predicate and returns Observable in the future if the entity will change the subject learns about it.