查询并获得了cursor对象后,用while(corsor.moveToNext()){}遍历,当corsor.moveToNext()方法调用,如果发现没有对象,会返回false
public List<MMImage> getAll() { List<MMImage> list = new ArrayList<MMImage>(); Cursor c = null; try { c = database.query(TABLE, null, null, null, null, null, null); while (c.moveToNext()) { MMImage mmImage = getMMImageFromCursor(c); list.add(mmImage); } } catch (Exception e) { e.printStackTrace(); } finally { if (c != null) { c.close(); } } return list; }