实体类处理

解决问题

解决了adapter中(或其他展示页中)代码混乱的问题

原理说明

1.DTO:从后台获取并解析后的实体类
2.VO :用于展示的实体类(包括展示到界面的字段title,date,也包括逻辑控制字段type等)
3.通过实现接口Mapper,将DTO转换为VO,用于adapter代码更清晰;
大神博客[架构向] 谈Android中DTO -> VO的重要性

代码参考

定义接口:

public interface Mapper<T>{
    T transform();
}

列表DTO(后台返回的)

public class UserListDTO implements Mapper<List<UserVO>>{

    private int totalCount;
    private List<UserDTO> userList;

    public int getTotalCount() {
        return totalCount;
    }

    public void setTotalCount(int totalCount) {
        this.totalCount = totalCount;
    }

    public List<UserDTO> getUserList() {
        return userList;
    }

    public void setUserList(List<UserDTO> userList) {
        this.userList = userList;
    }

    @Override
    public List<UserVO> transform() {
        List<UserVO> list = new ArrayList<>();
        for(UserDTO dto : userList){
            list.add(dto.transform());
        }
        return list;
    }
}

ItemDTO(后台返回的)

public class UserDTO implements Mapper<UserVO> {
    private String id;
    private String name;
    private String gender;
    private String other;

    public UserDTO(String id, String name, String gender, String other) {
        this.id = id;
        this.name = name;
        this.gender = gender;
        this.other = other;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public String getOther() {
        return other;
    }

    public void setOther(String other) {
        this.other = other;
    }

    @Override
    public UserVO transform() {
        UserVO user = new UserVO();
        user.setName(TextUtils.isEmpty(name) ? "未知" : name);
        user.setType(TextUtils.equals("1", gender) ? 1 : 2);
        return user;
    }
}

我们想要的(或者说方便Adapter直接获取数据的)

public class UserVO {

    private String name;
    private int type;

    public UserVO() {

    }

    public UserVO(String name, int type) {
        this.name = name;
        this.type = type;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getType() {
        return type;
    }

    public void setType(int type) {
        this.type = type;
    }
}

这样往adapter中传数据时直接调用 mUserListDTO.transform(); 就好了,代码就又干净了一些