Step 1 : Go to this link https://developer.sslcommerz.com/registration/ and register .

Step 2 : Login account with https://sandbox.sslcommerz.com/manage/

Step 3 : Go to console and click developer tab . you can now download android sdk file . You will find .aar file . Now follow the steps . You also get a manual but it’s not enough for android studio . or Download it from here : ANDROID_190617

1. Place the ssl-payment-sdk-v4.aar file in your project’s lib folder.
2. To include the SDK file go to File > New > New Module… > import .JAR/.AAR package > file name (browse the ssl-payment-sdk-v4.aar file) and press enter.
3. Right click on your Android Studio Project and go to Open Module Settings. Click on your Application Name and then click Press + sign and go to Module Dependency. Click on ssl-payment-sdk-v4 and click ok.

4.     Include the following library to your app label gradel. If your already include any library from the following list , then don’t need to again that particular library. 

5.  compile project(‘:ssl-payment-sdk-v4’) and sync in gradle file project app folder .

 MandatoryFieldModel mandatoryFieldModel = new MandatoryFieldModel("testbox","qwerty","10", "1012", CurrencyType.BDT, SdkType.TESTBOX, SdkCategory.BANK_LIST);/*Mandatory Field For Specific Bank Page*/
 MandatoryFieldModel mandatoryFieldModel = new MandatoryFieldModel("testbox","qwerty","10", "1012", CurrencyType.BDT, SdkType.TESTBOX, SdkCategory.BANK_PAGE, BankName.DBBL_VISA);
 
 /*Optional Fields*/
 CustomerFieldModel customerFieldModel = new CustomerFieldModel("Customer Name","Customer Email Address", "Customer Address 1", "Customer Address 2", "Customer City", "Customer State", "Customer Post Code", "Customer Country", " Customer Phone", "Customer Fax");
 ShippingFieldModel shippingFieldModel = new ShippingFieldModel("Shipping Name", "Shipping Address 1","Shipping Address 2","Shipping City", "Shipping State", "Shipping Post Code", "Shipping Country" );
 AdditionalFieldModel additionalFieldModel = new AdditionalFieldModel();
 additionalFieldModel.setValueA("Value Option 1");
 additionalFieldModel.setValueB("Value Option 1");
 additionalFieldModel.setValueC("Value Option 1");
 additionalFieldModel.setValueD("Value Option 1");
 
 /*Call for the payment*/
 PayUsingSSLCommerz.getInstance().setData(this,mandatoryFieldModel,customerFieldModel,shippingFieldModel,additionalFieldModel,new OnPaymentResultListener() {
 @Override
 public void transactionSuccess(TransactionInfo transactionInfo) {
 // If payment is success and risk label is 0.
 if(transactionInfo.getRiskLevel().equals("0")) {
             Log.d(TAG, "Transaction Successfully completed");
         }
 // Payment is success but payment is not complete yet. Card on hold now.
 else{
             Log.d(TAG, "Transaction in risk. Risk Title : "+transactionInfo.getRiskTitle().toString());
         }
     }
 
 @Override
 public void transactionFail(TransactionInfo transactionInfo) {
 // Transaction failed
 Log.e(TAG, "Transaction Fail");
     }
 
 @Override
 public void error(int errorCode) {
 switch (errorCode){
 // Your provides information is not valid.
 case ErrorKeys.USER_INPUT_ERROR :
                 Log.e(TAG, "User Input Error" );break;
 // Internet is not connected.
 case ErrorKeys.INTERNET_CONNECTION_ERROR :
                 Log.e(TAG, "Internet Connection Error" );break;
 // Server is not giving valid data.
 case ErrorKeys.DATA_PARSING_ERROR :
                 Log.e(TAG, "Data Parsing Error" );break;
 // User press back button or canceled the transaction.
 case ErrorKeys.CANCEL_TRANSACTION_ERROR :
                 Log.e(TAG, "User Cancel The Transaction" );break;
 // Server is not responding.
 case ErrorKeys.SERVER_ERROR :
                 Log.e(TAG, "Server Error" );break;
 // For some reason network is not responding
 case ErrorKeys.NETWORK_ERROR :
                 Log.e(TAG, "Network Error" );break;
         }
     }
 });

Download project

EOFException: End of input at line 1 column 1 path $  or Retofit2 error java.io.EOFException: End of input at line 1 column 1

Reasons:

This error message indicates a completely empty response, not the one you have indicated. If it’s an error you should be using errorBody() to get access to the data. If this is a normal response then you should yell at your server for returning no content when content was expected. But if you cannot change the server, consider using a converter to adapt empty bodies into null using something like this: #1554 (comment)

Solution : Check api response . Change api and return something and that will solve the problem 🙂

Step 1 : 

create a request model that will take request body data

package com.adn.api.order;

import com.adn.Model.DBModel.AddToCartProductModel;
import com.google.gson.annotations.SerializedName;

import java.util.ArrayList;

public class Order {

@SerializedName("customer_id")
String customer_id;
@SerializedName("firstname")
String firstname;
@SerializedName("lastname")
String lastname;
@SerializedName("email")
String email;
@SerializedName("products")
ArrayList<AddToCartProductModel> products;
@SerializedName("telephone")
String telephone;
@SerializedName("postcode")
String postcode;
@SerializedName("payment_method")
String payment_method;
@SerializedName("total_price")
String total_price;
@SerializedName("address")
String address;
@SerializedName("city")
String city;
@SerializedName("order_status")
String order_status;

//Don't forget to create/generate the getter and setter]

public Order(String customer_id, String firstname, String lastname, String email, ArrayList<AddToCartProductModel> products, String telephone, String postcode, String payment_method, String total_price, String address, String city, String order_status) {
this.customer_id = customer_id;
this.firstname = firstname;
this.lastname = lastname;
this.email = email;
this.products = products;
this.telephone = telephone;
this.postcode = postcode;
this.payment_method = payment_method;
this.total_price = total_price;
this.address = address;
this.city = city;
this.order_status = order_status;
}

public String getCustomer_id() {
return customer_id;
}

public void setCustomer_id(String customer_id) {
this.customer_id = customer_id;
}

public String getFirstname() {
return firstname;
}

public void setFirstname(String firstname) {
this.firstname = firstname;
}

public String getLastname() {
return lastname;
}

public void setLastname(String lastname) {
this.lastname = lastname;
}

public String getEmail() {
return email;
}

public void setEmail(String email) {
this.email = email;
}

public ArrayList<AddToCartProductModel> getProducts() {
return products;
}

public void setProducts(ArrayList<AddToCartProductModel> products) {
this.products = products;
}

public String getTelephone() {
return telephone;
}

public void setTelephone(String telephone) {
this.telephone = telephone;
}

public String getPostcode() {
return postcode;
}

public void setPostcode(String postcode) {
this.postcode = postcode;
}

public String getPayment_method() {
return payment_method;
}

public void setPayment_method(String payment_method) {
this.payment_method = payment_method;
}

public String getTotal_price() {
return total_price;
}

public void setTotal_price(String total_price) {
this.total_price = total_price;
}

public String getAddress() {
return address;
}

public void setAddress(String address) {
this.address = address;
}

public String getCity() {
return city;
}

public void setCity(String city) {
this.city = city;
}

public String getOrder_status() {
return order_status;
}

public void setOrder_status(String order_status) {
this.order_status = order_status;
}

@Override
public String toString() {
return "Order{" +
"customer_id='" + customer_id + '\'' +
", firstname='" + firstname + '\'' +
", lastname='" + lastname + '\'' +
", email='" + email + '\'' +
", products=" + products +
", telephone='" + telephone + '\'' +
", postcode='" + postcode + '\'' +
", payment_method='" + payment_method + '\'' +
", total_price='" + total_price + '\'' +
", address='" + address + '\'' +
", city='" + city + '\'' +
", order_status='" + order_status + '\'' +
'}';
}
}

Step 2 :

Add GSON on retrofit client call

package com.adn.api;

import com.adn.interfaces.URLs;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;

import java.util.concurrent.TimeUnit;

import okhttp3.OkHttpClient;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;

public class RetrofitClient implements URLs {
private static Retrofit getRetrofitInstance() {

Gson gson = new GsonBuilder()
.setLenient()
.create();

final OkHttpClient okHttpClient = new OkHttpClient.Builder()
.readTimeout(30, TimeUnit.SECONDS)
.connectTimeout(30, TimeUnit.SECONDS)
.build();

return new Retrofit.Builder()
.baseUrl(ROOT_URL)
.client(okHttpClient)
.addConverterFactory(GsonConverterFactory.create(gson))
.build();
}

/**
* Get API Service
*
* @return API Service
*/
public static AllApiCall getApiService() {
return getRetrofitInstance().create(AllApiCall.class);
}
}

Step 3 :

Call api like this in interface class

@POST("placeOrder")
Call<OrderContent> placeOrder(@Body Order order);

Step 4 :
Now Callback the api like this

Order order = new Order(userInfo.getId().toString(),userInfo.getFirstname().toString(),userInfo.getLastname(),userInfo.getEmail(),productModels,userInfo.getPhoneNumber(),postcode.getText().toString(),"cash in","45",address.getText().toString(),city.getText().toString(),"1");

Retrofit retrofit = new Retrofit.Builder()
.baseUrl("http://mobileteam.adnarchive.com/opencartAPI/public/api/")
.addConverterFactory(GsonConverterFactory.create())
.build();

AllApiCall service = retrofit.create(AllApiCall.class);

Call<OrderContent> orderContentCall = service.placeOrder(order);

orderContentCall.enqueue(new Callback<OrderContent>() {
@Override
public void onResponse(Call<OrderContent> call, Response<OrderContent> response) {
Toast.makeText(context, response.body().toString(), Toast.LENGTH_SHORT).show();
}

@Override
public void onFailure(Call<OrderContent> call, Throwable t) {

Toast.makeText(context, t.toString(), Toast.LENGTH_SHORT).show();

}
});

.

Done 🙂

Step 1 :

Open command line tool or terminal for mac/ linux  and run this command for lumen installer . If you have not composer installed then download and install it from here ;
https://getcomposer.org/

and install lumen intaller globally

[java]
composer global require "laravel/lumen-installer"
[/java]

Step 2 :
Create a lumen project with following command

[java]
 composer create-project –prefer-dist laravel/lumen restapi
[/java]

Step 3 :
Go the project directory and run the project

[java]
php -S localhost:8000 -t public
[/java]

Step 4 : 

Database file setup . Open .env file and setup database file . For mysql it looks like –
If you have no database create database for localhost . You need to install XAMP/WAMP .

[java]
APP_ENV=local
APP_DEBUG=true
APP_KEY=
APP_TIMEZONE=UTC

LOG_CHANNEL=stack
LOG_SLACK_WEBHOOK_URL=

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=lumen_api
DB_USERNAME=root
DB_PASSWORD=

CACHE_DRIVER=file
QUEUE_DRIVER=sync
[/java]

change the database name , password and username . And Environment and database setup done .