How to achieve MVVM + Live Data with retofit generic Api call in Android? - mvvm

Question

I want to create retrofit2 generic Api call in MVVM Architechture. I have not found any proper tutorial regardng this topic. I have done MVVM Architecture successfully . but I want to make Retrofit Api call generic through out the Application .Please help me out.
here is my code Repository
public class MainRepository {
// private List<ContactList> users = new ArrayList<>();
private MutableLiveData<ContactList> mutableLiveData = new MutableLiveData<>();
private Application application;
public MainRepository(Application application) {
this.application = application;
}
public MutableLiveData<ContactList> getMutableLiveData() {
Retrofit retrofit = ApiClient.getClient();
ApiListInterface apiListInterface = retrofit.create(ApiListInterface.class);
Call<ContactList> call = apiListInterface.getContacts();
call.enqueue(new Callback<ContactList>(){
#Override
public void onResponse(Call<ContactList> call, Response<ContactList> response) {
ContactList contactLists = response.body();
if (contactLists != null ) {
// users = (List<ContactList>) contactLists.ge;
mutableLiveData.setValue(contactLists);
}
}
#Override
public void onFailure(Call<ContactList> call, Throwable t) {
Log.d("ListSize"," - > Error "+ t.getMessage());
}
});
return mutableLiveData;
}
}
here is my ViewModel class
public class MainViewModel extends AndroidViewModel {
private MainRepository mainRepository;
public MainViewModel(#NonNull Application application) {
super(application);
mainRepository = new MainRepository(application);
}
public LiveData<ContactList> getAllUsers() {
return mainRepository.getMutableLiveData();
}
}
Here is My all Model class
public class ContactList {
#SerializedName("contacts")
#Expose
private List<Contact> contacts = null;
public List<Contact> getContacts() {
return contacts;
}
public void setContacts(List<Contact> contacts) {
this.contacts = contacts;
}
}
public class Contact {
#SerializedName("id")
#Expose
private String id;
#SerializedName("name")
#Expose
private String name;
#SerializedName("email")
#Expose
private String email;
#SerializedName("address")
#Expose
private String address;
#SerializedName("gender")
#Expose
private String gender;
#SerializedName("phone")
#Expose
private Phone phone;
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 getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public Phone getPhone() {
return phone;
}
public void setPhone(Phone phone) {
this.phone = phone;
}
}
public class Phone {
#SerializedName("mobile")
#Expose
private String mobile;
#SerializedName("home")
#Expose
private String home;
#SerializedName("office")
#Expose
private String office;
public String getMobile() {
return mobile;
}
public void setMobile(String mobile) {
this.mobile = mobile;
}
public String getHome() {
return home;
}
public void setHome(String home) {
this.home = home;
}
public String getOffice() {
return office;
}
public void setOffice(String office) {
this.office = office;
}
}
Here is My Activity
public class MainActivity extends AppCompatActivity {
private MainViewModel mainViewModel;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mainViewModel = ViewModelProviders.of(this).get(MainViewModel.class);
getUserList();
}
private void getUserList() {
mainViewModel.getAllUsers().observe(this, new Observer<ContactList>() {
#Override
public void onChanged(ContactList contactLists) {
Log.d("contacts_list",contactLists.getContacts().toString());
}
});
}
}