[Android] Correct order to set Context in Dao

Caution

--You should fill the Context in the constructor. --If you write in a local sentence, Context will be set in Helper as it is empty.

OK

HogeAppDao.java

public class HogeAppDao {
    private Context mContext;
    private HugaHelper hugaHelper = new HugaHelper(mContext);

    public HogeAppDao(Context context) {
        mContext = context;
        hugaHelper = new HugaHelper(mContext);
    }

    //Method to get information of all users
    public List<UserInfoEntity> selectAll() {
       ...
    };
}

NG

HogeAppDao.java

public class HogeAppDao {
    private Context mContext;
    private HugaHelper hugaHelper = new HugaHelper(mContext);

    public HogeAppDao(Context context) {
        mContext = context;
    }

    hugaHelper = new HugaHelper(mContext);

    //Method to get information of all users
    public List<UserInfoEntity> selectAll() {
       ...
    };
}