Retrofit Using Form Data

Registration API

Url: http://androindian.com/test/Register.php

Request: Form Data

Keys are username, email, password

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<layout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    tools:context=".MainActivity">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"

        android:orientation="vertical">


        <EditText
            android:id="@+id/username"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:ems="10"
            android:inputType="textPersonName"
            android:hint="UserName"/>

        <EditText
            android:id="@+id/mail"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:ems="10"
            android:inputType="textEmailAddress"
            android:hint="mail"/>

        <EditText
            android:id="@+id/password"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:ems="10"
            android:inputType="textPassword"
            android:hint="Password"/>

        <Button
            android:id="@+id/reg"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Reg" />
    </LinearLayout>
</layout>

MainActivity.java

package com.androindian.retro;

import androidx.appcompat.app.AppCompatActivity;
import androidx.databinding.DataBindingUtil;

import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Toast;

import com.androindian.retro.databinding.ActivityMainBinding;
import com.google.gson.JsonObject;

import java.util.Objects;

import okhttp3.MultipartBody;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;
import retrofit2.http.Multipart;

public class MainActivity extends AppCompatActivity {

    ActivityMainBinding binding;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        binding= DataBindingUtil.setContentView(
                MainActivity.this,R.layout.activity_main);


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





                MultipartBody.Part name = MultipartBody.Part.createFormData
                        ("username", Objects.requireNonNull(binding.username.getText().toString().trim()));

                MultipartBody.Part mail = MultipartBody.Part.createFormData(
                        "email",binding.mail.getText().toString().trim()
                                );

                MultipartBody.Part pass = MultipartBody.Part.createFormData
                        ("password",binding.password.getText().toString().trim());


                Retrofit retrofit=new Retrofit.Builder()
                        .baseUrl("https://androindian.com/")
                        .addConverterFactory(GsonConverterFactory.create())
                        .build();

                RetroInterface retroInterface=retrofit.create(RetroInterface.class);





                Call<RegResponse> regResponseCall=retroInterface.createUser(name,mail,pass);

                regResponseCall.enqueue(new Callback<RegResponse>() {
                    @Override
                    public void onResponse(Call<RegResponse> call,
                                           Response<RegResponse> response) {
                        Log.e("response",String.valueOf(response.body()));
                        String res=response.body().getKey();

                        if(res!=null){
                            Toast.makeText(MainActivity.this, "Reg Sucess", Toast.LENGTH_SHORT).show();

                        }else {
                            Toast.makeText(MainActivity.this, "Reg failed", Toast.LENGTH_SHORT).show();

                        }

                    }

                    @Override
                    public void onFailure(Call<RegResponse> call,
                                          Throwable t) {
                        Toast.makeText(MainActivity.this, ""+t.toString(), Toast.LENGTH_SHORT).show();

                    }
                });


            }
        });


    }
}

RetroInterface.java

package com.androindian.retro;

import com.google.gson.JsonObject;

import okhttp3.MultipartBody;
import retrofit2.Call;
import retrofit2.http.Body;
import retrofit2.http.Headers;
import retrofit2.http.Multipart;
import retrofit2.http.POST;
import retrofit2.http.Part;

public interface RetroInterface {

    @Multipart
    @Headers("Content-Type:application/json")
    @POST("test/Register.php")
    Call<RegResponse> createUser(@Part MultipartBody.Part name, @Part MultipartBody.Part email, @Part MultipartBody.Part password);
}

RegResponse.Java

package com.androindian.retro;

import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;

public class RegResponse {


        @SerializedName("key")
        @Expose
        private String key;
        @SerializedName("status")
        @Expose
        private String status;

        public String getKey() {
            return key;
        }

        public void setKey(String key) {
            this.key = key;
        }

        public String getStatus() {
            return status;
        }

        public void setStatus(String status) {
            this.status = status;
        }

    }

androidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">
    <uses-permission android:name="android.permission.INTERNET"></uses-permission>

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/Theme.RETRO"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

Add below lines in build gradle

dataBinding{
        enabled=true
    }


dependencies {
    implementation 'com.squareup.retrofit2:converter-gson:2.4.0'
    implementation 'com.squareup.retrofit2:retrofit:2.4.0'
    implementation 'com.google.code.gson:gson:2.8.9'
}