public static DbUtils create(Context context,String password) {
        SQLiteDatabase.loadLibs(context);//SQLiteDataba是net.sqlcipher.database包下的
        DaoConfig config = new DaoConfig(context);
        config.setPassword(password);//通过传入的password设置数据库访问密码
        return getInstance(config);
    }

//SQLcipher 数据库访问密码
private static final String PASSWWORD = "123456";
public static void saveNote(String noteId, Context context) {
//两个参数的creat(Context context,String password)，默认创建xUtils.db
//三个参数的create(Context context, String password,String dbName) ,则可以指定数据库名称      
    DbUtils db = DbUtils.create(context, PASSWWORD);
        Note note = new Note();
        note.setNoteId(noteId);
        try {
            db.save(note);
        } catch (Exception e) {
            e.printStackTrace();
        }
}

public static boolean isNoteReaded(String notesId, Context context) {
          DbUtils db = null;        
          Note note = null;
//若查询密码与之前设置的不匹配，则net.sqlcipher.database.SQLiteException: file is encrypted or is not a database。
          try {
            db = DbUtils.create(context, PASSWWORD);
          } catch (Exception e) {
            e.printStackTrace();
          }

          try {
            note = db.findFirst(Selector.from(Note.class).where(WhereBuilder.b("noteId", "=",notesId)));
              } catch (Exception e) {
            e.printStackTrace();
          }
          if (note == null) {
            return false;
          }
          return true;
      }