我推荐OrmLite 库，这是一个适用于Android 的轻量级对象关系映射。这个图书馆将使您的生活更轻松。您不需要手动创建或更新数据库，您不需要专注于管理数据库连接，所有查询选择、插入、更新都将使用DAO 方法更容易（通常您不需要编写您自己的 sql 查询）和许多功能。他们有some examples，您可以开始使用。
如果你想使用Loader，有一个ORMLite Extras，github 上提供了 ORMLite 的附加功能（你可以使用与支持 android 库兼容的支持包）。这是我之前项目的一个示例用法：
public class EventsFragment extends Fragment implements LoaderCallbacks<Cursor>{
private static final int LOADER_ID = EventsFragment.class.getName().hashCode();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getLoaderManager().initLoader(LOADER_ID, null, this);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View layoutRoot = inflater.inflate(
R.layout.fragment_events, null);
lvEvents = (ListView) layoutRoot.findViewById(R.id.lvEvents);
adapter = new EventAdapter(getActivity(), null, null);
lvEvents.setAdapter(adapter);
return layoutRoot;
}
@Override
public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) {
try {
PreparedQuery<Event> query = getDatabaseHelper().getEventDao().getQuery();
return getDatabaseHelper().getEventDao().getSQLCursorLoader(query );
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
@Override
public void onLoadFinished(Loader<Cursor> arg0, Cursor cursor) {
adapter.swapCursor(cursor);
try {
adapter.setQuery(getDatabaseHelper().getEventDao().getQuery());
} catch (SQLException e) {
e.printStackTrace();
}
}
@Override
public void onLoaderReset(Loader<Cursor> arg0) {
adapter.swapCursor(null);
}
private OrmliteDatabaseHelper getDatabaseHelper(){
return ((MainActivity)getActivity()).getDatabaseHelper();
}
}
适配器
public class EventAdapter extends OrmliteCursorAdapter<Event>{
public EventAdapter(Context context, Cursor c, PreparedQuery<Event> query) {
super(context, c, query);
}
@Override
public void bindView(View itemView, Context context, Event item) {
TextView tvEventTitle = (TextView) itemView.findViewById(R.id.tvEventTitle);
TextView tvEventStartDate = (TextView) itemView.findViewById(R.id.tvEventStartDate);
tvEventTitle.setText(item.getTitle());
tvEventStartDate.setText(item.getFormatStartDate());
}
@Override
public View newView(Context context, Cursor arg1, ViewGroup arg2) {
LayoutInflater inflater = LayoutInflater.from(context);
View retView = inflater.inflate(R.layout.event_item_row, arg2, false);
return retView;
}
}
还有一个为上面的光标适配器提供PreparedQuery的自定义Dao：
public interface IEventDao extends Dao<Event, Integer>{
PreparedQuery<Event> getQuery() throws SQLException;
OrmliteCursorLoader<Event> getSQLCursorLoader(Context context, PreparedQuery<Event> query) throws SQLException;
}
public class EventDao extends AndroidBaseDaoImpl<Event, Integer> implements IEventDao{
public EventDao(ConnectionSource connectionSource) throws SQLException {
super(connectionSource, Event.class);
}
public EventDao(ConnectionSource connectionSource,
DatabaseTableConfig<Event> tableConfig) throws SQLException {
super(connectionSource, tableConfig);
}
@Override
public PreparedQuery<Event> getQuery() throws SQLException{
return queryBuilder().prepare();
}
}
希望这能有所帮助！