Moshi + Retrofit - Handling JSON Response

Question

How do I display the json response in the XML,

I am getting the json response for response.body().toString() as expected. I am not sure how do get the value from the JSON.

But I am not sure how do I iterate through the json values.

{
    "data": [
        {
            "id": 4,
            "customer_id": 1,
            "order_name" : "Order Details",
            "created_at": "2020-01-04 14:18:30",
            "table1": {
                "id": 1,
                "customer_id": 1,
                "order_details_name": "Product Name",
                "description": null,
                "status": 1,
                "deleted_at": null,
                "created_at": "2020-01-04 08:03:45",
                "updated_at": "2020-01-04 08:54:23"
            },
            "table2": {
                "id": 1,
                "customer_id": 1,
                "order_information": "Order Details",
                "description": "desc",
                "status": 1,
                "deleted_at": null,
                "created_at": "2020-01-04 08:28:04",
                "updated_at": "2020-01-04 08:57:17"
            }
        }
    ]
}

I was using the http://www.jsonschema2pojo.org/ to convert the json

package - package com.tesmachino.saycure.entities.OrderHistory.OrderDetail;

ClassName - OrderDetailsResponse

Target language:
Java 

Source type:
JSON

Annotation style: Moshi 

-----------------------------------package com.tesmachino.saycure.entities.OrderHistory.OrderDetail;.Datum.java-----------------------------------

package package com.tesmachino.saycure.entities.OrderHistory.OrderDetail; ;

import com.squareup.moshi.Json;
import org.apache.commons.lang.builder.ToStringBuilder;

public class Datum {

@Json(name = "id")
private Integer id;
@Json(name = "customer_id")
private Integer customerId;
@Json(name = "order_name")
private String orderName;
@Json(name = "created_at")
private String createdAt;
@Json(name = "table1")
private Table1 table1;
@Json(name = "table2")
private Table2 table2;

public Integer getId() {
return id;
}

public void setId(Integer id) {
this.id = id;
}

public Integer getCustomerId() {
return customerId;
}

public void setCustomerId(Integer customerId) {
this.customerId = customerId;
}

public String getOrderName() {
return orderName;
}

public void setOrderName(String orderName) {
this.orderName = orderName;
}

public String getCreatedAt() {
return createdAt;
}

public void setCreatedAt(String createdAt) {
this.createdAt = createdAt;
}

public Table1 getTable1() {
return table1;
}

public void setTable1(Table1 table1) {
this.table1 = table1;
}

public Table2 getTable2() {
return table2;
}

public void setTable2(Table2 table2) {
this.table2 = table2;
}

@Override
public String toString() {
return new ToStringBuilder(this).append("id", id).append("customerId", customerId).append("orderName", orderName).append("createdAt", createdAt).append("table1", table1).append("table2", table2).toString();
}

}

-----------------------------------package com.tesmachino.saycure.entities.OrderHistory.OrderDetail;.OrderDetailsResponse.java-----------------------------------

package package com.tesmachino.saycure.entities.OrderHistory.OrderDetail; ;

import java.util.List;
import com.squareup.moshi.Json;
import org.apache.commons.lang.builder.ToStringBuilder;

public class OrderDetailsResponse {

@Json(name = "data")
private List<Datum> data = null;

public List<Datum> getData() {
return data;
}

public void setData(List<Datum> data) {
this.data = data;
}

@Override
public String toString() {
return new ToStringBuilder(this).append("data", data).toString();
}

}

-----------------------------------package com.tesmachino.saycure.entities.OrderHistory.OrderDetail;.Table1.java-----------------------------------

package package com.tesmachino.saycure.entities.OrderHistory.OrderDetail; ;

import com.squareup.moshi.Json;
import org.apache.commons.lang.builder.ToStringBuilder;

public class Table1 {

@Json(name = "id")
private Integer id;
@Json(name = "customer_id")
private Integer customerId;
@Json(name = "order_details_name")
private String orderDetailsName;
@Json(name = "description")
private Object description;
@Json(name = "status")
private Integer status;
@Json(name = "deleted_at")
private Object deletedAt;
@Json(name = "created_at")
private String createdAt;
@Json(name = "updated_at")
private String updatedAt;

public Integer getId() {
return id;
}

public void setId(Integer id) {
this.id = id;
}

public Integer getCustomerId() {
return customerId;
}

public void setCustomerId(Integer customerId) {
this.customerId = customerId;
}

public String getOrderDetailsName() {
return orderDetailsName;
}

public void setOrderDetailsName(String orderDetailsName) {
this.orderDetailsName = orderDetailsName;
}

public Object getDescription() {
return description;
}

public void setDescription(Object description) {
this.description = description;
}

public Integer getStatus() {
return status;
}

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

public Object getDeletedAt() {
return deletedAt;
}

public void setDeletedAt(Object deletedAt) {
this.deletedAt = deletedAt;
}

public String getCreatedAt() {
return createdAt;
}

public void setCreatedAt(String createdAt) {
this.createdAt = createdAt;
}

public String getUpdatedAt() {
return updatedAt;
}

public void setUpdatedAt(String updatedAt) {
this.updatedAt = updatedAt;
}

@Override
public String toString() {
return new ToStringBuilder(this).append("id", id).append("customerId", customerId).append("orderDetailsName", orderDetailsName).append("description", description).append("status", status).append("deletedAt", deletedAt).append("createdAt", createdAt).append("updatedAt", updatedAt).toString();
}

}

-----------------------------------package com.tesmachino.saycure.entities.OrderHistory.OrderDetail;.Table2.java-----------------------------------

package package com.tesmachino.saycure.entities.OrderHistory.OrderDetail; ;

import com.squareup.moshi.Json;
import org.apache.commons.lang.builder.ToStringBuilder;

public class Table2 {

@Json(name = "id")
private Integer id;
@Json(name = "customer_id")
private Integer customerId;
@Json(name = "order_information")
private String orderInformation;
@Json(name = "description")
private String description;
@Json(name = "status")
private Integer status;
@Json(name = "deleted_at")
private Object deletedAt;
@Json(name = "created_at")
private String createdAt;
@Json(name = "updated_at")
private String updatedAt;

public Integer getId() {
return id;
}

public void setId(Integer id) {
this.id = id;
}

public Integer getCustomerId() {
return customerId;
}

public void setCustomerId(Integer customerId) {
this.customerId = customerId;
}

public String getOrderInformation() {
return orderInformation;
}

public void setOrderInformation(String orderInformation) {
this.orderInformation = orderInformation;
}

public String getDescription() {
return description;
}

public void setDescription(String description) {
this.description = description;
}

public Integer getStatus() {
return status;
}

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

public Object getDeletedAt() {
return deletedAt;
}

public void setDeletedAt(Object deletedAt) {
this.deletedAt = deletedAt;
}

public String getCreatedAt() {
return createdAt;
}

public void setCreatedAt(String createdAt) {
this.createdAt = createdAt;
}

public String getUpdatedAt() {
return updatedAt;
}

public void setUpdatedAt(String updatedAt) {
this.updatedAt = updatedAt;
}

@Override
public String toString() {
return new ToStringBuilder(this).append("id", id).append("customerId", customerId).append("orderInformation", orderInformation).append("description", description).append("status", status).append("deletedAt", deletedAt).append("createdAt", createdAt).append("updatedAt", updatedAt).toString();
}

}

OrderDetail

package com.tesmachino.saycure;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;

import com.tesmachino.saycure.Auth.TokenManager;
import com.tesmachino.saycure.entities.OrderHistory.OrderDetail.OrderDetailsResponse;
import com.tesmachino.saycure.entities.OrderHistory.OrderHistoryResponse;
import com.tesmachino.saycure.entities.UserDetails.UserDetailsGetResponse;
import com.tesmachino.saycure.network.ApiService;
import com.tesmachino.saycure.network.RetrofitBuilder;

import java.util.List;

import butterknife.BindView;
import butterknife.ButterKnife;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;

public class OrderDetail extends AppCompatActivity {

    ApiService service;
    TokenManager tokenManager;

    Call<OrderDetailsResponse> call;


    private static final String TAG = "OrderDetail";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_order_detail);

        ButterKnife.bind(this);

        tokenManager = TokenManager.getInstance(getSharedPreferences("prefs", MODE_PRIVATE));
        service = RetrofitBuilder.createServiceWithAuth(ApiService.class, tokenManager);
    }


    @Override
    protected void onResume() {

        //Get the Data from the Intent
        if (getIntent().hasExtra("order_id")) {
            int order_id = getIntent().getIntExtra("order_id", 1);
            Log.d(TAG, "IntentWorking" + order_id);

            call = service.orderDetails(order_id);

            call.enqueue(new Callback<OrderDetailsResponse>() {
                @Override
                public void onResponse(Call<OrderDetailsResponse> call, Response<OrderDetailsResponse> response) {
                    OrderDetailsResponse orderDetails = response.body();

                    if (orderDetails != null){

                    }
                    Toast.makeText(OrderDetail.this, "" + response.body().toString(), Toast.LENGTH_SHORT).show();
                }

                @Override
                public void onFailure(Call<OrderDetailsResponse> call, Throwable t) {
                    Log.w(TAG, "onFailure: " + t.getMessage());
                    Toast.makeText(OrderDetail.this, "Failure" + t.getMessage(), Toast.LENGTH_SHORT).show();
                }
            });

        } else {

            Toast.makeText(this, "There seems to be an error while fetching the Order Id. Please Try Again", Toast.LENGTH_SHORT).show();
        }

        super.onResume();
    }
}

Answer 1

You do not have to iterate through JSON as you already have made POJO classes for your JSON, and you are getting it in onResponse with response.body(). So you can just use it to iterate through your data.

For example, suppose you need created_at from table1, you can access it like:

String createdAt = orderDetails.getData().get(0).getTable1().getCreatedAt()