MainActivity.java

package com.aloine.retrofittest;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;

public class MainActivity extends AppCompatActivity {
    EditText email,password, firstname, lastname, gender, phoneNumber;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        email = findViewById(R.id.email);
        password = findViewById(R.id.password);
        firstname = findViewById(R.id.firstName);
        lastname = findViewById(R.id.lastName);
        gender = findViewById(R.id.gender);
        phoneNumber = findViewById(R.id.phoneNumber);


    }

    private void sendNetworkRequestUser(User user) {
        Retrofit.Builder builder = new Retrofit.Builder()
                .baseUrl("http://192.168.43.96:8000/api/v1/")
                .addConverterFactory(GsonConverterFactory.create());

        Retrofit retrofit = builder.build();

        UserClient client = retrofit.create(UserClient.class);
        Call<User> call = client.createAccount(user);

        call.enqueue(new Callback<User>() {
            @Override
            public void onResponse(Call<User> call, Response<User> response) {
                Toast.makeText(MainActivity.this, "successful" , Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onFailure(Call<User> call, Throwable t) {
                Toast.makeText(MainActivity.this, "Something went wrong" + t.fillInStackTrace(), Toast.LENGTH_SHORT).show();
            }
        });
    }

    public void signup(View view) {
        User user = new User(
                email.getText().toString(),
                password.getText().toString(),
                firstname.getText().toString(),
                lastname.getText().toString(),
                gender.getText().toString(),
                phoneNumber.getText().toString());


        sendNetworkRequestUser(user);
    }
}