public class FragmentRegistration extends Fragment {
View mainView;

EditText username, email, password, name;
Button button;

ApiClient pentairAPIClient = ApiClient.getInstance();

SupportopObj supportopObj = new SupportopObj();
SupportopObjActivate supportopObjActivate = new SupportopObjActivate();

@Override
public View onCreateView(LayoutInflater inflater,
                         @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    mainView = inflater.inflate
            (R.layout.registration, container, false);

    username = mainView.findViewById(R.id.username);
    email = mainView.findViewById(R.id.email);
    password = mainView.findViewById(R.id.password);
    name = mainView.findViewById(R.id.name);
    button = mainView.findViewById(R.id.register);

    button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            //String s = name.getText().toString();
            //String split[] = s.split(" ");

            supportopObj.setFirstName("Tester");
            supportopObj.setLastName("Testryan");
            supportopObj.setUsername(username.getText().toString());
            supportopObj.setEmail(email.getText().toString());
            supportopObj.setPassword(password.getText().toString());

            supportopObjActivate.setUsername(supportopObj.getUsername());
            supportopObjActivate.setEmail(supportopObj.getEmail());
            supportopObjActivate.setPassword(supportopObj.getPassword());
            supportopObjActivate.setType("generic");
            updateApp();
            //activationCall();
        }
    });

    return mainView;
}


public void updateApp() {
    //FragmentRegistration context = this;

    Call<ResponseBody> call = pentairAPIClient.registration(supportopObj);
    call.enqueue(new Callback<ResponseBody>() {
        @Override
        public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
            if (response.isSuccessful()) {
                activationCall();

            } else {
                Toast.makeText(getActivity(), "Something went wrong",
                        Toast.LENGTH_SHORT).show();
            }
        }

        @Override
        public void onFailure(Call<ResponseBody> call, Throwable t) {
            Toast.makeText(getActivity(), "Error...", Toast.LENGTH_SHORT).show();
        }
    });
}


public void activationCall() {
    Call<ResponseBody> callActive = pentairAPIClient.activation(supportopObjActivate);
    callActive.enqueue(new Callback<ResponseBody>() {
        @Override
        public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {

            if (response.isSuccessful()) {

                try {
                    String data = response.body().string();
                    JSONObject obj = new JSONObject(data);
                    String client_id = obj.getString("client_id");
                    String client_secret = obj.getString("client_secret");

                    tokenCall(client_id, client_secret);

                } catch (JSONException | IOException e) {
                    e.printStackTrace();
                }

            } else {
                Toast.makeText(getActivity(), "error", Toast.LENGTH_SHORT).show();
            }
        }

        @Override
        public void onFailure(Call<ResponseBody> call, Throwable t) {
            Toast.makeText(getActivity(), "Error in activation",
                    Toast.LENGTH_SHORT).show();
        }
    });
}


public void tokenCall(String client_id, String client_secret) {
    Call<ResponseBody> token = pentairAPIClient.get_token("password", client_id, client_secret,
            supportopObjActivate.getEmail(), supportopObjActivate.getPassword());

    token.enqueue(new Callback<ResponseBody>() {
        @Override
        public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
            if (response.isSuccessful()) {
                Toast.makeText(getActivity(), String.valueOf(response.body()), Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(getActivity(), "Something wrong.....", Toast.LENGTH_SHORT).show();
            }
        }

        @Override
        public void onFailure(Call<ResponseBody> call, Throwable t) {
            Toast.makeText(getActivity(), t.toString(), Toast.LENGTH_SHORT).show();
        }
    });
}}

@Override
    public void onFailure(Call<ResponseBody> call, Throwable t)
{
    Toast.makeText(getActivity(), "You're onfailure",Toast.LENGTH_SHORT).show();
}

t={SocketTimeoutException@830038722120}java.net.SocketTimeoutException: timeout

readTimeout(10, TimeUnit.SECONDS)
.connectTimeout(10, TimeUnit.SECONDS)
.writeTimeout(10, TimeUnit.SECONDS);

public interface SupportopApi {

@POST("/api/registration")
Call<ResponseBody> registration(@Body SupportopObj supportopObj);

@POST("/api/getClientCD")
Call<ResponseBody> activate(@Body SupportopObjActivate activate);

@GET("/api/token")
Call<ResponseBody> getToken(@Query("grant_type") String grant_type,
                            @Query("client_id") String client_id,
                            @Query("client_secret") String client_secret,
                            @Query("email") String email,
                            @Query("password") String password);}

public class ApiClient {

private static ApiClient instance;

private SupportopApi supportopApi;

private ApiClient(String endpoint) {

    OkHttpClient.Builder clientBuilder = new OkHttpClient.Builder()
            .readTimeout(10, TimeUnit.SECONDS)
            .connectTimeout(10, TimeUnit.SECONDS)
            .writeTimeout(10, TimeUnit.SECONDS);

    clientBuilder.addInterceptor(new Interceptor() {
        @Override
        public Response intercept(Chain chain) throws IOException {
            Request request = chain.request();
            request = request.newBuilder()
                    .addHeader("Content-Type", "application/json")
                    .build();
            return chain.proceed(request);
        }
    });

    supportopApi = new Retrofit.Builder()
            .baseUrl(endpoint)
            .client(clientBuilder.build())
            .addConverterFactory(GsonConverterFactory.create())
            .build()
            .create(SupportopApi.class);
}


public static synchronized void initializeInstance(String endpoint) {
    if (instance == null) {
        instance = new ApiClient(endpoint);
    }
}


public static synchronized ApiClient getInstance() {
    if (instance == null) {
        throw new IllegalStateException("PentairAPIClient has not been initialized.");
    }
    return instance;
}


public Call<ResponseBody> registration(SupportopObj supportopObj) {
    return supportopApi.registration(supportopObj);
}


public Call<ResponseBody> activation(SupportopObjActivate activate){
    return supportopApi.activate(activate);
}


public Call<ResponseBody> get_token(String grant_type, String client_id, String client_secret,
                                   String email, String password){

    return supportopApi.getToken(grant_type, client_id, client_secret, email, password);
}}