GreenDao 直接执行SQL的方法

try

                {

                    DaoSession session=MyApplication.getInstances().getDaoSession();

                    long fromId=-1;

                    String strSql="select * from test order by ID desc limit 0,1 ";

                    Cursor c  = session.getDatabase().rawQuery(strSql,null);

                    if(c.moveToFirst())

                    {

                        fromId=c.getLong(c.getColumnIndex("ID"));

                    }

                    c.close();

                }

                catch (Exception ex)

                {

                    showToast(ex.getMessage());

                }