Signup with jwt token in android Retrofit

Signup with jwt token in android Retrofit - java

I want to register a user with their token, I want to register a user using retrofit in android but I keep getting this error:
ERROR::: Attempt to invoke virtual method 'void com.signup.User.setUsername(java.lang.String)' on a null object reference
Here is my code:
public class Session {
Context context;
private SharedPreferences prefs;
public Session(Context cntx) {
// TODO Auto-generated constructor stub
this.context = cntx;
prefs = PreferenceManager.getDefaultSharedPreferences(context);
}
public void setJwtToken(String token) {
prefs.edit().putString("JwtToken", token).commit();
}
public String getJwtToken() {
String token = prefs.getString("JwtToken", "");
if (token == null || token.isEmpty()) {
token = "Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJleHAiOjIxNzc0NTI3OTksImlhdCI6MTUxNjAyMjk5OSwiaXNzIjoiQmFzb2JhYXMgTmVwYWwiLCJuYmYiOjE1MTYwMjI5OTksImp0aSI6Ikd1ZXN0VG9rZW4iLCJzdWIiOjB9.QikmNgBYmqch5HREGFEpUs4Xk3x-zFfDg5mhYJO7jM8";
}
return token;
}
}
public interface ApiInterface {
#POST("/api/users/signup")
Call<ResponseBody> signMeUp(#Header("Authorization") String token ,#Body User user);
}
public class MainActivity extends AppCompatActivity {
private EditText et_name, et_address, et_phone, et_username, et_email, et_password, et_confipassword;
private Button register;
private User user;
private SharedPreferences prefs;
private ApiInterface apiInterface;
private Session session;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
et_name = findViewById(R.id.edit_text_name);
et_address = findViewById(R.id.edit_text_address);
et_phone = findViewById(R.id.edit_text_phonenumber);
et_username = findViewById(R.id.edit_text_username);
et_email = findViewById(R.id.edit_text_email);
et_password = findViewById(R.id.edit_text_password);
et_confipassword = findViewById(R.id.edit_text_confirm_password);
register = findViewById(R.id.signupButton);
register.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Login();
}
});
}
private void Login() {
user.setUsername(et_name.getText().toString());
user.setAddress(et_address.getText().toString());
user.setPhone(et_phone.getText().toString());
user.setName(et_name.getText().toString());
user.setEmail(et_email.getText().toString());
user.setPassword(et_password.getText().toString());
user.setPasswordConfirmation(et_confipassword.getText().toString());
signupUser(user);
}
private void signupUser(final User user) {
// Set up progressbar before call
apiInterface = ApiClient.getClient().create(ApiInterface.class);
Call<ResponseBody> call1 = apiInterface.signMeUp(session.getJwtToken(),user);
final Gson gson = new Gson();
final String json = gson.toJson(user);
call1.enqueue(new Callback<ResponseBody>() {
#Override
public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
if (response.code() == 201) {
try {
JSONObject jsonObject = new JSONObject(response.body().string());
//Starting main activity after user sees dialog
} catch (JSONException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
} else if (response.code() == 500) {
try {
JSONObject jsonObject = new JSONObject(response.errorBody().string());
Log.e("SignupFragment", jsonObject.toString());
} catch (JSONException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}else
Log.e("SignupFragment", response.raw().toString());
}
#Override
public void onFailure(Call<ResponseBody> call, Throwable t) {
}
});
}
}
public class User {
#SerializedName("name")
#Expose
private String name;
#SerializedName("email")
#Expose
private String email;
#SerializedName("password")
#Expose
private String password;
#SerializedName("password_confirmation")
#Expose
private String passwordConfirmation;
#SerializedName("image")
#Expose
private String image;
#SerializedName("phone")
#Expose
private String phone;
#SerializedName("address")
#Expose
private String address;
#SerializedName("username")
#Expose
private String username;
#SerializedName("pan_no")
#Expose
private String panNo;
#SerializedName("birthday")
#Expose
private String birthday;
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 getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getPasswordConfirmation() {
return passwordConfirmation;
}
public void setPasswordConfirmation(String passwordConfirmation) {
this.passwordConfirmation = passwordConfirmation;
}
public String getImage() {
return image;
}
public void setImage(String image) {
this.image = image;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPanNo() {
return panNo;
}
public void setPanNo(String panNo) {
this.panNo = panNo;
}
public String getBirthday() {
return birthday;
}
public void setBirthday(String birthday) {
this.birthday = birthday;
}
}
public class ApiClient {
public static final String BASE_URL = "https://myapp.herokuapp.com/";
private static Retrofit retrofit = null;
public static Retrofit getClient() {
if (retrofit == null) {
retrofit = new Retrofit.Builder()
.baseUrl(BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
}
return retrofit;
}
ApiInterface apiInterface=retrofit.create(ApiInterface.class);
}
I want to signup a user via my app but I keep getting the error. And, if I remove the auth from header from my Interface I get a message asking a token, and when I provide a token it give me a null object reference error !!

You should instantiate variable before access it: User user = new User();
Update: do it in void Login()

create an instance of User inside onCreate method or up there where it's declared

Try this
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
user = new User();
session = new Session(this);
}

Related

I want to add a bearer token to my retrofit post request

I have an app that is to register people into a platform but I get a response of Unauthenticated each time I submit the form data. The form is submitted using an API which requires a bearer token for each post request with the aid of retrofit. I have been out of touch with Java.
Note: its just a plain form. No authentication has been implemented in the app.
My ApiClient.java class
public class ApiClient {
private static Retrofit getRetrofit(){
HttpLoggingInterceptor httpLoggingInterceptor = new HttpLoggingInterceptor();
httpLoggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
OkHttpClient okHttpClient = new OkHttpClient.Builder().addInterceptor(httpLoggingInterceptor).build();
Retrofit retrofit = new Retrofit.Builder()
.baseUrl("xxxxxxxxxxxxx")
.addConverterFactory(GsonConverterFactory.create())
.client(okHttpClient)
.build();
return retrofit;
}
public static UserService getUserService(){
UserService userService = getRetrofit().create(UserService.class);
return userService;
}
}
My UserService.java class
public interface UserService {
#POST("algonapi/api/enroll_vehicle")
Call<UserResponse> saveUser(#Body UserRequest userRequest);
}
My saveUser Method
public void saveUser(UserRequest userRequest){
Call<UserResponse> userResponseCall = ApiClient.getUserService().saveUser(userRequest);
userResponseCall.enqueue(new Callback<UserResponse>() {
#Override
public void onResponse(Call<UserResponse> call, Response<UserResponse> response) {
if (response.isSuccessful()){
Toast.makeText(MainActivity.this, "Registration Successfull! Click on Reset Form to Start a New Enumeration...", Toast.LENGTH_LONG).show();
}else {
Toast.makeText(MainActivity.this, "Registration Failed!", Toast.LENGTH_LONG).show();
}
}
#Override
public void onFailure(Call<UserResponse> call, Throwable t) {
Toast.makeText(MainActivity.this, "Registration Failed!" +t.getLocalizedMessage(), Toast.LENGTH_LONG).show();
}
});
}
My UserRequest
package com.example.xxxxx;
public class UserRequest {
private String FullName;
private String StickerNumber;
private String Address;
private String Email;
private String Phone;
private String Nationality;
private String State;
private String LGA;
private String RC;
private String DriversLicenseNo;
private String LicenseIssued;
private String LicenseExpiry;
private String VehicleType;
private String VehicleLicense;
private String VehicleTyres;
private String LGAofOperation;
private String NOKFullName;
private String NOKAddress;
private String NOKPhone;
private String NOKEmail;
private String NOKNationality;
private String NOKState;
public String getFullName() {
return FullName;
}
public void setFullName(String fullName) {
FullName = fullName;
}
public String getStickerNumber() {
return StickerNumber;
}
public void setStickerNumber(String stickerNumber) {
StickerNumber = stickerNumber;
}
public String getAddress() {
return Address;
}
public void setAddress(String address) {
Address = address;
}
public String getEmail() {
return Email;
}
public void setEmail(String email) {
Email = email;
}
public String getPhone() {
return Phone;
}
public void setPhone(String phone) {
Phone = phone;
}
public String getNationality() {
return Nationality;
}
public void setNationality(String nationality) {
Nationality = nationality;
}
public String getState() {
return State;
}
public void setState(String state) {
State = state;
}
public String getLGA() {
return LGA;
}
public void setLGA(String LGA) {
this.LGA = LGA;
}
public String getRC() {
return RC;
}
public void setRC(String RC) {
this.RC = RC;
}
public String getDriversLicenseNo() {
return DriversLicenseNo;
}
public void setDriversLicenseNo(String driversLicenseNo) {
DriversLicenseNo = driversLicenseNo;
}
public String getLicenseIssued() {
return LicenseIssued;
}
public void setLicenseIssued(String licenseIssued) {
LicenseIssued = licenseIssued;
}
public String getLicenseExpiry() {
return LicenseExpiry;
}
public void setLicenseExpiry(String licenseExpiry) {
LicenseExpiry = licenseExpiry;
}
public String getVehicleType() {
return VehicleType;
}
public void setVehicleType(String vehicleType) {
VehicleType = vehicleType;
}
public String getVehicleLicense() {
return VehicleLicense;
}
public void setVehicleLicense(String vehicleLicense) {
VehicleLicense = vehicleLicense;
}
public String getVehicleTyres() {
return VehicleTyres;
}
public void setVehicleTyres(String vehicleTyres) {
VehicleTyres = vehicleTyres;
}
public String getLGAofOperation() {
return LGAofOperation;
}
public void setLGAofOperation(String LGAofOperation) {
this.LGAofOperation = LGAofOperation;
}
public String getNOKFullName() {
return NOKFullName;
}
public void setNOKFullName(String NOKFullName) {
this.NOKFullName = NOKFullName;
}
public String getNOKAddress() {
return NOKAddress;
}
public void setNOKAddress(String NOKAddress) {
this.NOKAddress = NOKAddress;
}
public String getNOKPhone() {
return NOKPhone;
}
public void setNOKPhone(String NOKPhone) {
this.NOKPhone = NOKPhone;
}
public String getNOKEmail() {
return NOKEmail;
}
public void setNOKEmail(String NOKEmail) {
this.NOKEmail = NOKEmail;
}
public String getNOKNationality() {
return NOKNationality;
}
public void setNOKNationality(String NOKNationality) {
this.NOKNationality = NOKNationality;
}
public String getNOKState() {
return NOKState;
}
public void setNOKState(String NOKState) {
this.NOKState = NOKState;
}
}

Create the OkHttpClient like this
OkHttpClient okHttpClient = new OkHttpClient.Builder().addInterceptor(new Interceptor() {
#NotNull
#Override
public Response intercept(#NotNull Chain chain) throws IOException {
Request request=chain.request().newBuilder()
.addHeader("Authorization", "Bearer " + token)
.build();
return chain.proceed(request);
}
}).build();

If you most of your https requests need authentication then the first answer is perfect but if some of your requests need then you can pass the header to each methods.
public interface UserService {
#POST("algonapi/api/enroll_vehicle")
Call<UserResponse> saveUser(
#Header("Authorization") String token,
#Body UserRequest userRequest
);
}
While calling the method simply pass your token along with userRequest.

Retrofit response body null but status code is 200

I want to make a fitur to login, I want to make a feature to log in, initially I saw the response code shows 200, but when I saw the response body was null. I can still log in, but the logged in user data isn't saved. I used 2 db MySql and SQLite and im using retrofit and shared preference. And here my code
API Interface
public interface Api {
#FormUrlEncoded
#POST(Config.API_LOGIN_USER)
Call<UserOrtu> loginUser(
#Field("email") String email,
#Field("password") String password
);
PrefUtil.java
public class PrefUtil {
public static final String USER_SESSION = "user_session";
public static final String USER_STORAGE = "user_storage";
public static SharedPreferences getSharedPreferences(Context ctx){
return PreferenceManager.getDefaultSharedPreferences(ctx);
}
public static void putUser(Context ctx, String key, UserOrtu user){
Gson gson = new Gson();
String json = gson.toJson(user);
putString(ctx, key, json);
}
public static UserOrtu getUser(Context ctx, String key){
Gson gson = new Gson();
String json = getString(ctx, key);
UserOrtu user = gson.fromJson(json, UserOrtu.class);
return user;
}
public static void putString(Context ctx, String key, String value){
getSharedPreferences(ctx).edit().putString(key, value).apply();
}
public static String getString(Context ctx, String key){
return getSharedPreferences(ctx).getString(key, null);
}
public static void clear(Context ctx) {
getSharedPreferences(ctx).edit().clear().apply();
}
}
Models
UserOrtu.java
public class UserOrtu {
#SerializedName("id_user")
#Expose
private int idUser;
#SerializedName("nama")
#Expose
private String nama;
#SerializedName("email")
#Expose
private String email;
#SerializedName("password")
#Expose
private String password;
#SerializedName("error")
#Expose
private Boolean error;
#SerializedName("message")
#Expose
private String message;
public int getIdUser() {
return idUser;
}
public void setIdUser(int idUser) {
this.idUser = idUser;
}
public String getNama() {
return nama;
}
public void setNama(String nama) {
this.nama = nama;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public Boolean getError() {
return error;
}
public void setError(Boolean error) {
this.error = error;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
}
SignInActivity.java
public class SignInActivity extends AppCompatActivity {
#BindView(R.id.input_email_signin)
TextInputEditText etEmail;
#BindView(R.id.text_register)
TextView tvRegister;
#BindView(R.id.input_password_signin)
TextInputEditText etPassword;
EmailValidator emailValidator;
PasswordValidator passwordValidator;
Context context;
private String email;
private String password;
private Api mApi;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (isSessionLogin()){
startActivity(new Intent(this, MainActivity.class));
this.finish();
}
setContentView(R.layout.activity_sign_in);
ButterKnife.bind(this);
AndroidThreeTen.init(this);
mApi = RetrofitBuilder.builder(this).create(Api.class);
}
boolean isEmail(EditText text){
emailValidator = new EmailValidator();
String email = text.getText().toString();
return emailValidator.isValid(email);
}
boolean isPassword(EditText text){
passwordValidator = new PasswordValidator();
String pass = text.getText().toString();
return passwordValidator.isValid(pass);
}
#OnClick(R.id.text_register) void toRegister(){
Intent intent = new Intent(this, SignUpActivity.class);
startActivity (intent);
}
#OnClick(R.id.btn_signin) void onLogin(){
if(isEempty(etEmail)){
etEmail.setError("Email harus diisi");
}else if(isEempty(etPassword)){
etPassword.setError("Password harus diisi");
}else if(!isEmail(etEmail)){
etEmail.setError("Email tidak valid");
}else if(!isPassword(etPassword)){
String str = passwordValidator.getString();
Toast.makeText(getApplicationContext(),str, Toast.LENGTH_SHORT).show();
}else {
loginAct();
}
}
void loginAct(){
email = etEmail.getText().toString();
password = etPassword.getText().toString();
final MaterialDialog dialog = DialogBuilder.showLoadingDialog(SignInActivity.this, "Updating Data", "Please wait..", false);
mApi.loginUser(email, password).enqueue(new Callback<UserOrtu>() {
#Override
public void onResponse(Call<UserOrtu> call, Response<UserOrtu> response) {
UserOrtu user = response.body();
Log.i("USER_LOGIN", response.message());
if (user != null){
//Masih error disini
//if (!user.getError()){
PrefUtil.putUser(getApplicationContext(), PrefUtil.USER_SESSION, user);
Intent intent = new Intent(SignInActivity.this, MainActivity.class);
startActivity(intent);
//this.finish();
//}
Toast.makeText(getApplicationContext(), user.getMessage(), Toast.LENGTH_SHORT).show();
}
if (response.code() == 403){
etPassword.requestFocus();
etPassword.setError(getString(R.string.error_password));
}
if (response.code() == 404){
etEmail.requestFocus();
etEmail.setError(getString(R.string.error_login));
}
dialog.dismiss();
}
#Override
public void onFailure(Call<UserOrtu> call, Throwable t) {
//Toast.makeText(getActivity(), t.getMessage(), Toast.LENGTH_SHORT).show();
dialog.dismiss();
Log.i("USER_LOGIN", t.getMessage());
DialogBuilder.showErrorDialog(SignInActivity.this, "Gagal Login");
}
});
}
// this method to check is user logged in ?
boolean isSessionLogin(){
return PrefUtil.getUser(getApplicationContext(), PrefUtil.USER_SESSION) != null;
}
}
And here's my result
enter image description here
Here's my JSON request
enter image description here

Your model is not representing same data as in JSON. With UserOrtu class it will works only if your response will have structure like below:
{
"id":1,
"nama": "Name",
"email":"email",
"message":"msg"
}
But as you can see 3 first fields are inside another object data. So your model should look more like:
class LoginResponse{
#SerializedName("data")
#Expose
private UserOrtu userData;
#SerializedName("message")
#Expose
private String message;
}

Pass parameters with Retrofit with Field

I'm following a retrofit course in which I create a small backend with an api in which I have a POST method to perform a teacher's login. In the course what he does is create a teacher and with the set method he passes him the email and the password, which is what this method receives in the API.
I would like to do it in such a way that in the call to Retrofit you pass directly this email and password and I have done it in the following way:
public class LoginActivity extends AppCompatActivity {
private EditText etPasswordLogin, etEmailLogin;
private Button btLogin;
private TextView tvSignUp;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
setupView();
}
private void setupView() {
etPasswordLogin = findViewById(R.id.loginEditTextPassword);
etEmailLogin = findViewById(R.id.loginEditTextEmail);
btLogin = findViewById(R.id.buttonSignUp);
tvSignUp = findViewById(R.id.textViewSignUp);
btLogin.setOnClickListener(v -> userSignUp());
tvSignUp.setOnClickListener(v -> startActivity(new Intent(getApplicationContext(), SignUpActivity.class)));
}
private void userSignUp() {
String email = etEmailLogin.getText().toString().trim();
String password = etPasswordLogin.getText().toString().trim();
if (email.isEmpty()) {
etEmailLogin.setError(getResources().getString(R.string.email_error));
etEmailLogin.requestFocus();
return;
}
if (!Patterns.EMAIL_ADDRESS.matcher(email).matches()) {
etEmailLogin.setError(getResources().getString(R.string.email_doesnt_match));
etEmailLogin.requestFocus();
return;
}
if (password.isEmpty()) {
etPasswordLogin.setError(getResources().getString(R.string.password_error));
etPasswordLogin.requestFocus();
return;
}
if (password.length() < 4) {
etPasswordLogin.setError(getResources().getString(R.string.password_error_less_than));
etPasswordLogin.requestFocus();
return;
}
login(email, password);
}
private void login(String email, String password) {
String BASE_URL = "http://10.0.2.2:8040";
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
WebServiceApi api = retrofit.create(WebServiceApi.class);
Call<List<Profesor>> call = api.login(email, password);
call.enqueue(new Callback<List<Profesor>>() {
#Override
public void onResponse(Call<List<Profesor>> call, Response<List<Profesor>> response) {
if (response.code() == 200) {
Log.d("TAG1", "Profesor logeado");
} else if (response.code() == 404) {
Log.d("TAG1", "Profesor no existe");
} else {
Log.d("TAG1", "Error desconocido");
}
}
#Override
public void onFailure(Call<List<Profesor>> call, Throwable t) {
Log.d("TAG Error: ", Objects.requireNonNull(t.getMessage()));
}
});
}
}
And this would be my model teacher:
public class Profesor {
#SerializedName("id")
private Long id;
#SerializedName("nombre")
private String nombre;
#SerializedName("email")
private String email;
#SerializedName("password")
private String password;
#SerializedName("foto")
private String photo;
public Profesor(){}
public Profesor(Long id, String nombre, String email, String photo) {
this.id = id;
this.nombre = nombre;
this.email = email;
this.photo = photo;
}
public Profesor(String email, String password){
this.email = email;
this.password = password;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getNombre() {
return nombre;
}
public void setNombre(String nombre) {
this.nombre = nombre;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getPhoto() {
return photo;
}
public void setPhoto(String photo) {
this.photo = photo;
}
}
Finally the call to Retrofit that I make is the following:
#FormUrlEncoded
#POST("api/login")
Call<List<Profesor>> login(#Field("email") String email, #Field("password") String password);
However when I run the application and pass through the form the email and password, in the log I return "Error desconocido", however in postman gives me answer without problems:
Any idea what I'm doing wrong?

Your postman request is not a form-urlencoded, but raw.
You need to send a json as a request, and not a field. So to fix this, you may change your API, to handle form-urlencoded requests, or change the Android code this way.
public class LoginCredentials {
#SerializedName("email")
private String email;
#SerializedName("password")
private String password;
public LoginCredentials(String email, String password) {
this.email = email;
this.password = password;
}
}
and change this
#FormUrlEncoded
#POST("api/login")
Call<List<Profesor>> login(#Field("email") String email, #Field("password") String password);
to this
#POST("api/login")
Call<List<Profesor>> login(#Body LoginCredentials credentials);
Hope this will help.

App is posting data Successfully, But I would like to retrieve token

Am using retrofit and RxJava to Connect to API. Data is being successfully posted to Server but i would like to get the Token which the API generates after posting data.
This is for Authentication of user using a JSON Web Token Django Backend
The models are working fine but Here are my Models:
public class User {
#SerializedName("user")
#Expose
private User_ user;
public User_ getUser() {
return user;
}
public void setUser(User_ user) {
this.user = user;
}
#Override
public String toString() {
return new ToStringBuilder(this).append("user", user).toString();
}
}
public class User_ {
#SerializedName("email")
#Expose
private String email;
#SerializedName("password")
#Expose
private String password;
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
#Override
public String toString() {
return new ToStringBuilder(this).append("email", email).append("password", password).toString();
}
}
#SerializedName("user")
#Expose
private LoginResponse_ user;
public LoginResponse_ getUser() {
return user;
}
public void setUser(LoginResponse_ user) {
this.user = user;
}
#Override
public String toString() {
return new ToStringBuilder(this).append("user", user).toString();
}
}
public class LoginResponse_ {
#SerializedName("email")
#Expose
private String email;
#SerializedName("token")
#Expose
private String token;
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getToken() {
return token;
}
public void setToken(String token) {
this.token = token;
}
#Override
public String toString() {
return new ToStringBuilder(this).append("email", email).append("token", token).toString();
}
}
Retrofit Interface
#POST("auth/login")
#Headers("X-Requested-With:XMLHttpRequest")
Observable<User> login(
#Header("Content-Type") String content_type,
#Body User user
);
}
Retrofit Adapter
public class ServiceGenerator {
private static Retrofit retrofit;
private static Gson gson;
public static synchronized Retrofit getUser() {
if (retrofit == null) {
if (gson == null) {
gson = new GsonBuilder().setLenient().create();
}
retrofit = new Retrofit.Builder()
.baseUrl(Constants.BASE_URL)
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.addConverterFactory(GsonConverterFactory.create(gson))
.build();
}
return retrofit;
}
Retrofit Instance
public class NetworkUtils {
private static UserService userService;
public static UserService ApiInstance(){
if (userService == null){
userService = ServiceGenerator.getUser().create(UserService.class);
}
return userService;
}
}
This is how am trying to login the user
private void loginProcess(String email, String password) {
User user = new User();
User_ user_ = new User_();
user_.setEmail(email);
user_.setPassword(password);
user.setUser(user_);
mUserService.login("application/json", user)
.observeOn(AndroidSchedulers.mainThread())
.subscribeOn(Schedulers.io())
.subscribe(new Observer<User>() {
#Override
public void onSubscribe(Disposable d) {
}
#Override
public void onNext(User user) {
showResponse(user.toString());
Log.i(TAG, "Response: "+ user);
mProgressBar.setVisibility(View.GONE);
handleResponse();
}
#Override
public void onError(Throwable e) {
e.printStackTrace();
}
#Override
public void onComplete() {
}
});
}
private void handleResponse(LoginResponse response) {
SharedPreferences.Editor editor = mSharedPreference.edit();
editor.putString(Constants.TOKEN,response.getUser().getToken());
editor.putString(Constants.EMAIL,response.getUser().getEmail());
editor.apply();
mEditTextEmail.setText(null);
mEditTextPassword.setText(null);
Intent intent = new Intent(getActivity(),ProfileActivity.class);
startActivity(intent);
}
It would be really helpful if i get to know how to get response after posting the data to the API.
Using postman this is what i post
{"user":{"email":"user#email.com", "password":"userpassword"}}
And this is the response I get
{
"user": {
"email": "user#email.com",
"token": "eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpZCI6NSwiZXhwIjoxNTY5MjI5NTgxfQ.S-1yZWNhx_TV8uay8PubGoq9XMpyTIn_ipG8A6DWTfE"
}
}

Why the object is returned empty? Android. Retrofit2

Why the object is returned empty? Android. Retrofit2.
I have a class User:
public class User{
#SerializedName("LOGIN")
String login;
#SerializedName("PASSWORD")
String password;
#SerializedName("NAME")
String name;
#SerializedName("SURNAME")
String surname;
public String getLogin() {
return login;
}
public void setLogin(String login) {
this.login = login;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
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;
}
}
This's my JSON:
[{
"LOGIN":"TEST",
"PASSWORD":"TEST",
"NAME":"TEST",
"SURNAME":"TEST"
}
]
Interface:
public interface Link {
#GET("93sZY0Xg")
Call<List<User>> listRepos();
}
and class LoginActivity where i use retrofit2:
public class LoginActivity extends AppCompatActivity implements Callback<List<User>>{
private Retrofit retrofit = new Retrofit.Builder()
.addConverterFactory(GsonConverterFactory.create())
.baseUrl("http://pastebin.com/raw/")
.build();
private Link service = retrofit.create(Link.class);
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
Call<List<User>> us = service.listRepos();
us.enqueue(this);
}
#Override
public void onResponse(Call<List<User>> call, Response<List<User>> response) {
System.out.println(response.body());
System.out.println(response.code());
User us = response.body().get(0);
System.out.println(us.getName());
for(User m: response.body()){
System.out.println( m.getName());
}
}
#Override
public void onFailure(Call<List<User>> call, Throwable t) {
System.out.println(t.getLocalizedMessage());
}
}
I get this response: response.code() is 200;
I/System.out: [com.example.com.dataBase.User#b789a]
I tried getName from class User, but all variables is null.
Why are the values empty? Where's my mistakes?

Try following, expose annotation is important to set value in fields
#Expose
#SerializedName("movie_id")
private String movieId;
#Expose
#SerializedName("movie_name")
private String movieName;
#Expose
#SerializedName("movie_poster")
private String moviePoster;
#Expose
#SerializedName("movie_dialog_count")
private String movieDialogCount;

Develop Reference

Java is a programming language and computing platform first released by Sun Microsystems in 1995.

Signup with jwt token in android Retrofit - java

You should instantiate variable before access it: User user = new User(); Update: do it in void Login()

create an instance of User inside onCreate method or up there where it's declared

Try this #Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); user = new User(); session = new Session(this); }

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Why the object is returned empty? Android. Retrofit2

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