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