There are quite a few questions similar to yours already. Start with:
- ORM on android SQLite and database scheme
- Any Good ORM tools for Android development?
- Light weight alternative to Hibernate?
- Are there any good ORMs (preferably JPA implementations) that support SQLite (on Android)?
- Higher level database layer for Android?
- Android object handling / persistence
though some of those questions might be outdated by now.
