Android Room + Card View + RecyclerVIew

@Entity
public class User {
    @PrimaryKey(autoGenerate = true)
    private Long userid;
    private String username;
    private String usercontact;
    private String useremail;

}

@Dao
public interface UserDao {
    @Insert
    Long SaveUser(User user);

    @Update
    int UpdateUser(User user);

    @Query("SELECT * FROM USER WHERE USER.userid = :id")
    User FindUserById(Long id);

    @Query("SELECT * FROM USER")
    List<User> FindAll();

    @Query("DELETE FROM USER WHERE USER.userid = :id")
    void DeleteUserById(Long id);
}








@Database(entities = {User.class}, version = 1, exportSchema = false)
public abstract class UserDatabase extends RoomDatabase{
    public abstract UserDao userDao();
}




public class UserAdapter extends RecyclerView.Adapter<UserAdapter.MyViewHolder>


List<User> userList;
private Context mContext;




https://github.com/gsandaru/AndroidRoomExample




 onCreateViewHolder------------------------------- {
    View itemView = LayoutInflater.from(parent.getContext())
            .inflate(R.layout.user_card, parent, false);

    return new MyViewHolder(itemView);
}







userAdapter = new UserAdapter(this, users);
RecyclerView.LayoutManager mLayoutManager = new GridLayoutManager(this, 1);recyclerView.setLayoutManager(mLayoutManager);recyclerView.setAdapter(userAdapter);