Develop Reference

How to insert RealmList to RealmDB

I am trying to insert realm lists to my realmdb in my first insert there is no problem but when I insert another realmList with a different class, my old values are deleted. So how can I insert a realmlist to DB? inserts are done separately.
RealmList<Product> insertedProduct = new RealmList<Product>();
RealmList<ProductSubCategory> insertedSubCategory = new RealmList<ProductSubCategory>();
RealmList<ProductMainCategory> insertedMainCategory = new RealmList<ProductMainCategory>();
... inserting to realm list firt time ...
insertRealmList(insertedProduct); //inserting to realmDB first time
insertRealmList(insertedSubCategory); //inserting to realmDB first time
insertRealmList(insertedMainCategory); //inserting to realmDB first time
first insert to realmDB
RealmList insert function
private void insertRealmList(final RealmList realmObject) {
mRealm = Realm.getDefaultInstance();
realmTask = mRealm.executeTransactionAsync(
new Realm.Transaction() {
#Override
public void execute(Realm realm) {
realm.copyToRealmOrUpdate(realmObject);
}
},
new Realm.Transaction.OnSuccess() {
#Override
public void onSuccess() {
Log.i(TAG, "onSuccess: successfully inserted data");
}
},
new Realm.Transaction.OnError() {
#Override
public void onError(Throwable error) {
Log.i(TAG, "onError: error while inserting " + "error: " + error);
}
}
);
}
... inserting to realm list second time...
insertRealmList(insertedLanguages); //insert realmDB second time
second insert to realmDB
PRODUCT MODEL
package Model;
import io.realm.RealmList;
import io.realm.RealmObject;
import io.realm.annotations.Ignore;
import io.realm.annotations.Index;
import io.realm.annotations.PrimaryKey;
public class Product extends RealmObject {
#PrimaryKey
#Index
private int ID;
#Index
private int PLU_NO;
private String PRODUCT_NAME;
private String MAIN_CATEGORY;
private String SUB_CATEGORY;
private String TYPE;
private String TUS;
private Double PRICE;
private String CALORIE;
private String COOKING_TIME;
private RealmList<String> PRODUCT_NAME_LANGUAGES;
private RealmList<String> PRODUCT_DESCRIPTION_LANGUAGES;
private String IMAGE_BASE_HORIZONTAL; //4/3
private String IMAGE_BASE_VERTICAL; //16/9
private String VIDEO_NAME; //video name
#Ignore
private int AMOUNT;
#Ignore
private int WINDOW_AMOUNT = 1;
public Product(int ID, int PLU_NO, String PRODUCT_NAME, String MAIN_CATEGORY, String SUB_CATEGORY, String TYPE, String TUS, Double PRICE, String CALORIE, String COOKING_TIME, RealmList<String> PRODUCT_NAME_LANGUAGES, RealmList<String> PRODUCT_DESCRIPTION_LANGUAGES, String IMAGE_BASE_HORIZONTAL, String IMAGE_BASE_VERTICAL, String VIDEO_NAME) {
this.ID = ID;
this.PLU_NO = PLU_NO;
this.PRODUCT_NAME = PRODUCT_NAME;
this.MAIN_CATEGORY = MAIN_CATEGORY;
this.SUB_CATEGORY = SUB_CATEGORY;
this.TYPE = TYPE;
this.TUS = TUS;
this.PRICE = PRICE;
this.CALORIE = CALORIE;
this.COOKING_TIME = COOKING_TIME;
this.PRODUCT_NAME_LANGUAGES = PRODUCT_NAME_LANGUAGES;
this.PRODUCT_DESCRIPTION_LANGUAGES = PRODUCT_DESCRIPTION_LANGUAGES;
this.IMAGE_BASE_HORIZONTAL = IMAGE_BASE_HORIZONTAL;
this.IMAGE_BASE_VERTICAL = IMAGE_BASE_VERTICAL;
this.VIDEO_NAME = VIDEO_NAME;
}
public Product() {
}
public int getID() {
return ID;
}
public void setID(int ID) {
this.ID = ID;
}
public int getPLU_NO() {
return PLU_NO;
}
public void setPLU_NO(int PLU_NO) {
this.PLU_NO = PLU_NO;
}
public String getPRODUCT_NAME() {
return PRODUCT_NAME;
}
public void setPRODUCT_NAME(String PRODUCT_NAME) {
this.PRODUCT_NAME = PRODUCT_NAME;
}
public String getMAIN_CATEGORY() {
return MAIN_CATEGORY;
}
public void setMAIN_CATEGORY(String MAIN_CATEGORY) {
this.MAIN_CATEGORY = MAIN_CATEGORY;
}
public String getSUB_CATEGORY() {
return SUB_CATEGORY;
}
public void setSUB_CATEGORY(String SUB_CATEGORY) {
this.SUB_CATEGORY = SUB_CATEGORY;
}
public String getTYPE() {
return TYPE;
}
public void setTYPE(String TYPE) {
this.TYPE = TYPE;
}
public String getTUS() {
return TUS;
}
public void setTUS(String TUS) {
this.TUS = TUS;
}
public Double getPRICE() {
return PRICE;
}
public void setPRICE(Double PRICE) {
this.PRICE = PRICE;
}
public String getCALORIE() {
return CALORIE;
}
public void setCALORIE(String CALORIE) {
this.CALORIE = CALORIE;
}
public String getCOOKING_TIME() {
return COOKING_TIME;
}
public void setCOOKING_TIME(String COOKING_TIME) {
this.COOKING_TIME = COOKING_TIME;
}
public RealmList<String> getPRODUCT_NAME_LANGUAGES() {
return PRODUCT_NAME_LANGUAGES;
}
public void setPRODUCT_NAME_LANGUAGES(RealmList<String> PRODUCT_NAME_LANGUAGES) {
this.PRODUCT_NAME_LANGUAGES = PRODUCT_NAME_LANGUAGES;
}
public RealmList<String> getPRODUCT_DESCRIPTION_LANGUAGES() {
return PRODUCT_DESCRIPTION_LANGUAGES;
}
public void setPRODUCT_DESCRIPTION_LANGUAGES(RealmList<String> PRODUCT_DESCRIPTION_LANGUAGES) {
this.PRODUCT_DESCRIPTION_LANGUAGES = PRODUCT_DESCRIPTION_LANGUAGES;
}
public String getIMAGE_BASE_HORIZONTAL() {
return IMAGE_BASE_HORIZONTAL;
}
public void setIMAGE_BASE_HORIZONTAL(String IMAGE_BASE_HORIZONTAL) {
this.IMAGE_BASE_HORIZONTAL = IMAGE_BASE_HORIZONTAL;
}
public String getIMAGE_BASE_VERTICAL() {
return IMAGE_BASE_VERTICAL;
}
public void setIMAGE_BASE_VERTICAL(String IMAGE_BASE_VERTICAL) {
this.IMAGE_BASE_VERTICAL = IMAGE_BASE_VERTICAL;
}
public String getVIDEO_NAME() {
return VIDEO_NAME;
}
public void setVIDEO_NAME(String VIDEO_NAME) {
this.VIDEO_NAME = VIDEO_NAME;
}
public int getAMOUNT() {
return AMOUNT;
}
public void setAMOUNT(int AMOUNT) {
this.AMOUNT = AMOUNT;
}
public int getWINDOW_AMOUNT() {
return WINDOW_AMOUNT;
}
public void setWINDOW_AMOUNT(int WINDOW_AMOUNT) {
this.WINDOW_AMOUNT = WINDOW_AMOUNT;
}
public void setDEFAULT_WINDOW_AMOUNT() {
this.WINDOW_AMOUNT = 1;
}
}
LANGUAGE MODEL
package Model;
import io.realm.RealmObject;
public class Language extends RealmObject {
#PrimaryKey
#Index
private int ID;
private String ICON;
private String NAME;
public Language(){
}
public Language(int ID, String ICON, String NAME) {
this.ID = ID;
this.ICON = ICON;
this.NAME = NAME;
}
public int getId() {
return ID;
}
public void setId(int id) {
this.ID = id;
}
public String getICON() {
return ICON;
}
public void setICON(String ICON) {
this.ICON = ICON;
}
public String getName() {
return NAME;
}
public void setName(String name) {
this.NAME = name;
}
}
Other two models are similar with product.

Please try the following method:
private <T extends RealmModel> void insertRealmList(final List<T> objects) {
try (Realm realmInstance = Realm.getDefaultInstance()) {
realmInstance.executeTransaction(realm -> {
for (T object : objects) {
realmInstance.insertOrUpdate(object);
}
});
}
}
Hope this helps!

Android Nested Objects and Retrofit2

I am reading a JSON like this:
{
"matches": [{
"id": 246119,
"utcDate": "2018-08-17T18:15:00Z",
"status": "FINISHED",
"homeTeam": {
"id": 298,
"name": "Girona FC"
},
"awayTeam": {
"id": 250,
"name": "Real Valladolid CF"
},
"score": {
"winner": "DRAW",
"duration": "REGULAR"
}
}]
}
I must say that the JSON is valid. I am consuming this JSON through an API. I can correctly read the properties "id", "utc" and "status", but I could not with "score", "awayTeam" and "homeTeam". I don't really know how to work those properties. I'd like to handle each propertie of score, awayTeam, and homeTeam individually, for example, I want to get just the name of awayTeam and homeTeam and the 2 properties of score.
This, is my code:
MainActivity
public class MainActivity extends AppCompatActivity {
private Retrofit retrofit;
private static final String TAG = "Football";
private RecyclerView recyclerView;
private ListaPartidosAdapter listaPartidosAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView = (RecyclerView)findViewById(R.id.recyclerView);
listaPartidosAdapter = new ListaPartidosAdapter(this);
recyclerView.setAdapter(listaPartidosAdapter);
recyclerView.setHasFixedSize(true);
final LinearLayoutManager layoutManager = new LinearLayoutManager(this, VERTICAL, true);
recyclerView.setLayoutManager(layoutManager);
retrofit = new Retrofit.Builder()
.baseUrl("http://api.football-data.org/v2/")
.addConverterFactory(GsonConverterFactory.create())
.build();
obtenerDatos();
}
private void obtenerDatos() {
footballdataService service = retrofit.create(footballdataService.class);
Call<PartidosRespuesta> partidosRespuestaCall = service.obtenerlistaPartidos();
partidosRespuestaCall.enqueue(new Callback<PartidosRespuesta>() {
#Override
public void onResponse(Call<PartidosRespuesta> call, Response<PartidosRespuesta> response) {
if(response.isSuccessful()) {
PartidosRespuesta partidosRespuesta = response.body();
ArrayList<Partido> listaPartidos = partidosRespuesta.getMatches();
listaPartidosAdapter.adicionarListaPartidos(listaPartidos);
}
else {
Log.e(TAG, "onResponse: " + response.errorBody());
}
}
#Override
public void onFailure(Call<PartidosRespuesta> call, Throwable t) {
Log.e(TAG, "onFailure: " + t.getMessage());
}
});
}
}
Now this is my interface. footballdataService
public interface footballdataService {
#GET("competitions/2014/matches")
Call<PartidosRespuesta> obtenerlistaPartidos();
}
This is PartidosRespuestas class
public class PartidosRespuesta {
private ArrayList<Partido> matches;
public ArrayList<Partido> getMatches() {
return matches;
}
public void setMatches(ArrayList<Partido> matches) {
this.matches = matches;
}
}
This, is the adapter.
public class ListaPartidosAdapter extends RecyclerView.Adapter<ListaPartidosAdapter.ViewHolder> {
private static final String TAG = "Football_Adapter";
private ArrayList<Partido> dataset;
private Context context;
public ListaPartidosAdapter(Context context) {
this.context = context;
dataset = new ArrayList<Partido>();
}
#Override
public ListaPartidosAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_partidos, parent, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(ListaPartidosAdapter.ViewHolder holder, int position) {
Partido p = dataset.get(position);
holder.status.setText(p.getId());
}
#Override
public int getItemCount() {
return dataset.size();
}
public void adicionarListaPartidos(ArrayList<Partido> listaPartidos){
dataset.addAll(listaPartidos);
notifyDataSetChanged();
}
public class ViewHolder extends RecyclerView.ViewHolder {
private TextView status;
public ViewHolder(View itemView) {
super(itemView);
status = (TextView) itemView.findViewById(R.id.status);
}
}
}
And this.., is Partido class
public class Partido {
private String id;
private String utcDate;
private String status;
private EquipoCasa homeTeam;
private EquipoVisita AwayTeam;
private Puntaje score;
public String getId() {
return id;
}
public String getUtcDate() {
return utcDate;
}
public String getStatus() {
return status;
}
public EquipoCasa getHomeTeam() {
return homeTeam;
}
public EquipoVisita getAwayTeam() {
return AwayTeam;
}
public Puntaje getScore() {
return score;
}
public void setId(String id) {
this.id = id;
}
public void setUtcDate(String utcDate) {
this.utcDate = utcDate;
}
public void setStatus(String status) {
this.status = status;
}
public void setHomeTeam(EquipoCasa homeTeam) {
this.homeTeam = homeTeam;
}
public void setAwayTeam(EquipoVisita awayTeam) {
AwayTeam = awayTeam;
}
public void setScore(Puntaje score) {
this.score = score;
}
public class EquipoCasa {
private String id;
private String name;
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 class EquipoVisita {
private String id;
private String name;
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 class Puntaje {
private String winner;
private String duration;
public String getWinner() {
return winner;
}
public void setWinner(String winner) {
this.winner = winner;
}
public String getDuration() {
return duration;
}
public void setDuration(String duration) {
this.duration = duration;
}
}
}

POJO classes of your code should this:
AwayTeam.java
//AwayTeam
public class AwayTeam {
#SerializedName("id")
#Expose
private Integer id;
#SerializedName("name")
#Expose
private String name;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
PartidosRespuesta.java
//Object response
public class PartidosRespuesta {
#SerializedName("matches")
#Expose
private List<Match> matches = null;
public List<Match> getMatches() {
return matches;
}
public void setMatches(List<Match> matches) {
this.matches = matches;
}
}
HomeTeam.java
//HomeTeam
public class HomeTeam {
#SerializedName("id")
#Expose
private Integer id;
#SerializedName("name")
#Expose
private String name;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
Score.java
//Score
public class Score {
#SerializedName("winner")
#Expose
private String winner;
#SerializedName("duration")
#Expose
private String duration;
public String getWinner() {
return winner;
}
public void setWinner(String winner) {
this.winner = winner;
}
public String getDuration() {
return duration;
}
public void setDuration(String duration) {
this.duration = duration;
}
}
Edit:
#Override
public void onBindViewHolder(ListaPartidosAdapter.ViewHolder holder, int position) {
Partido p = dataset.get(position);
HomeTeam homeTeam = p.getHomeTeam();
String nameHomeTeam = homeTeam.getName();
}
And tool convert json to java code: http://www.jsonschema2pojo.org/

try
public class Puntaje {
public String winner;
public String duration;
}

It's seems like you've problems with your models. Use this link to convert your json to java object.

Clear a Model class

I have a model class "JobPostBean" which I'm initiating in another model class and adding data using the second model class. I would like to clear any data which gets saved in the "JobPostBean" class. Is there any way to clear it either in "JobPostBean" class or in the second model class where its initialised? I would prefer to clear it using a single method rather than setting every item in the "JobPostBean" class to null.
public class BidNextJobDataModel {
private static BidNextJobDataModel ourInstance = new BidNextJobDataModel();
public static BidNextJobDataModel getInstance() {
return ourInstance;
}
private BidNextJobDataModel() {
}
public UserBean userBean;
// Here I initialised the class
public JobPostBean jobPostBean = new JobPostBean();
public ArrayList<FilterModel> filterModelArrayList = new ArrayList<FilterModel>();
public ArrayList<FilterModel> notificationModelArrayList = new ArrayList<FilterModel>();
public ArrayList<FilterModel> chooseCategoryArrayList = new ArrayList<FilterModel>();
public ArrayList<JobsBean> jobsBeanArrayList = new ArrayList<JobsBean>();
}
public class JobPostBean {
private String jobtype="";
private String days="";
private String hour="";
private String title="";
private String category="";
private String categorytxt="";
private String description="";
private String price="";
private String duration="";
private String is_certified="";
private String is_insure="";
private String is_experience="";
private String address="";
private String name="";
private String image="";
private String date="";
private String pricetype="";
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getImage() {
return image;
}
public void setImage(String image) {
this.image = image;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public String getJobtype() {
return jobtype;
}
public void setJobtype(String jobtype) {
this.jobtype = jobtype;
}
public String getDays() {
return days;
}
public void setDays(String days) {
this.days = days;
}
public String getHour() {
return hour;
}
public void setHour(String hour) {
this.hour = hour;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getCategory() {
return category;
}
public void setCategory(String category) {
this.category = category;
}
public String getCategorytxt() {
return categorytxt;
}
public void setCategorytxt(String categorytxt) {
this.categorytxt = categorytxt;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getPrice() {
return price;
}
public void setPrice(String price) {
this.price = price;
}
public String getDuration() {
return duration;
}
public void setDuration(String duration) {
this.duration = duration;
}
public String getIs_certified() {
return is_certified;
}
public void setIs_certified(String is_certified) {
this.is_certified = is_certified;
}
public String getIs_insure() {
return is_insure;
}
public void setIs_insure(String is_insure) {
this.is_insure = is_insure;
}
public String getIs_experience() {
return is_experience;
}
public void setIs_experience(String is_experience) {
this.is_experience = is_experience;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getPricetype() {
return pricetype;
}
public void setPricetype(String pricetype) {
this.pricetype = pricetype;
}
}

public ArrayList<JobPostBean > al_JobPostBean = new ArrayList<JobPostBean >(); // Declare as global
At first Hold Data in ArrayList .If you want delete all data then You can Clear ArrayList
al_JobPostBean.clear();
The clear() method removes all the elements of ArrayList .

Json Return Null Using Retrofit Library Android

I want to get data from my localhost with retrofit library. I want to make it so that when I click the button, all TextView will set new value. For example, TextView username will change "developer" in my json file. However, when I clicked the button I guess json returned null because I can not see anything. Can you help me solve this problem?
JSON File :
{"USERS":[{"_id":"587c0346f8469d38a0ea46bf",
"username":"developer",
"name":"Akif",
"surname":"Demirezen",
"tel":"023656565",
"age":"25",
"location_id":{"_id":"587c0346f8469d38a0ea46be",
"il":"istanbul",
"ilce":"cevizlibağ"},
"__v":0}]}
Example.class :
public class Example {
#SerializedName("USERS")
#Expose
private List<USER> uSERS = null;
public List<USER> getUSERS() {
return uSERS;
}
public void setUSERS(List<USER> uSERS) {
this.uSERS = uSERS;
}
}
LocationID Class :
public class LocationId {
#SerializedName("_id")
#Expose
private String id;
#SerializedName("il")
#Expose
private String il;
#SerializedName("ilce")
#Expose
private String ilce;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getIl() {
return il;
}
public void setIl(String il) {
this.il = il;
}
public String getIlce() {
return ilce;
}
public void setIlce(String ilce) {
this.ilce = ilce;
}
}
Main Activity Class :
public class MainActivity extends AppCompatActivity {
TextView tid,tusername,tname,tsurname,tage,ttel,tlocationid;
Button butonverilerigoster;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tid = (TextView) findViewById(R.id.t_id);
tusername = (TextView) findViewById(R.id.t_username);
tname = (TextView) findViewById(R.id.t_name);
tsurname = (TextView) findViewById(R.id.t_surname);
tage = (TextView) findViewById(R.id.t_age);
ttel = (TextView) findViewById(R.id.t_tel);
tlocationid = (TextView) findViewById(R.id.t_locationid);
butonverilerigoster = (Button) findViewById(R.id.butonusergetir);
butonverilerigoster.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
new Thread(new Runnable() {
public void run() {
ApiService.Factory.getInstance().getuse().enqueue(new Callback<USER>() {
#Override
public void onResponse(Call<USER> call, Response<USER> response) {
tid.setText(response.body().getId());
tusername.setText(response.body().getUsername());
tname.setText(response.body().getName());
tsurname.setText(response.body().getSurname());
tage.setText(response.body().getAge());
ttel.setText(response.body().getTel());
tlocationid.setText((CharSequence) response.body().getLocationId());
}
#Override
public void onFailure(Call<USER> call, Throwable t) {
Log.e("Failed", t.getMessage());
}
});
}
}).start();
}
});
}
}
User class :
public class USER {
#SerializedName("_id")
#Expose
private String id;
#SerializedName("username")
#Expose
private String username;
#SerializedName("name")
#Expose
private String name;
#SerializedName("surname")
#Expose
private String surname;
#SerializedName("tel")
#Expose
private String tel;
#SerializedName("age")
#Expose
private String age;
#SerializedName("location_id")
#Expose
private LocationId locationId;
#SerializedName("__v")
#Expose
private Integer v;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSurname() {
return surname;
}
public void setSurname(String surname) {
this.surname = surname;
}
public String getTel() {
return tel;
}
public void setTel(String tel) {
this.tel = tel;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
public LocationId getLocationId() {
return locationId;
}
public void setLocationId(LocationId locationId) {
this.locationId = locationId;
}
public Integer getV() {
return v;
}
public void setV(Integer v) {
this.v = v;
}
}

How to sort inner object while parsing json data with gson

I have two classes.
Class SubCategory
public class SubCategory implements Comparable<SubCategory>{
private int scid;
private String scname;
public SubCategory(int scid, String scname) {
this.scid = scid;
this.scname = scname;
}
public int getScid() {
return scid;
}
public void setScid(int scid) {
this.scid = scid;
}
public String getScname() {
return scname;
}
public void setScname(String scname) {
this.scname = scname;
}
public int compareTo(SubCategory subCategory){
return this.getScname().compareTo(subCategory.getScname());
}
}
Class Category
public class Category implements Comparable<Category>{
private int id;
private String name;
private String image;
private int display_with;
private List<SubCategory> subcategories;
public Category(int id, String name, String image, int display_with, List<SubCategory> subcategories) {
this.id = id;
this.name = name;
this.image = image;
this.display_with = display_with;
this.subcategories = subcategories;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getImage() {
return image;
}
public void setImage(String image) {
this.image = image;
}
public int getDisplay_with() {
return display_with;
}
public void setDisplay_with(int display_with) {
this.display_with = display_with;
}
public List<SubCategory> getSubcategories() {
return subcategories;
}
public void setSubcategories(List<SubCategory> subcategories) {
this.subcategories = subcategories;
}
public int compareTo(Category category){
return this.getName().compareTo(category.getName());
}
}
This is retrofir request.
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(Constants.BASERESTURL)
.addConverterFactory(GsonConverterFactory.create())
.build();
I am Parsing the data with gson library in retrofit response
public void onResponse(retrofit.Response<List<Category>> response, Retrofit retrofit) {
loading.dismiss();
List<Category> categories = response.body();
Collections.sort(categories);
Utility.setCategories(categories);
}
i can sort the categories with Collections.sort(categories);
But how to sort subcategories with category??

You can do this right in setSubcategories, so everytime you set new subcategories they will get sorted:
public void setSubcategories(List<SubCategory> subcategories) {
Collections.sort(subcategories)
this.subcategories = subcategories;
}
Also you should replace this.subcategories = subcategories; with this.setSubcategories(subcategories) in your Constructor.