Parse Dynamic unknown named array Json using Retrofit

Question

i\'m new to retrofit,below is the json

 {
  \"response\": \"success\",
  \"servicecode\": \"134\",
  \"forecast\": {
    \"month\": {
      \"jan\": [
        {
         


        

Answer 1

method 1 - without using model class

Suppose your "month" object is jsonObjectResponse.You can make use of Iterator

    JSONObject jsonResponse = new JSONObject(jsonObjectResponse);
Iterator  iteratorObj = jsonResponse.keys();
while (iteratorObj.hasNext())
     {
       JSONArray monthArray=(JSONArray)iteratorObj.next()
       //add all monthArray to an arraylist
     }

** Edit for model class **

method 2 - using model class

You can use Map<String, List<MonthModel>> to get dynamic response from month

You have two create three model clases like this:

Example.java

public class Example {
@SerializedName("response")
@Expose
private String response;
@SerializedName("servicecode")
@Expose
private String servicecode;
@SerializedName("forecast")
@Expose
private Forecast forecast;
@SerializedName("message")
@Expose
private String message;

public String getResponse() {
    return response;
}

public void setResponse(String response) {
    this.response = response;
}

public String getServicecode() {
    return servicecode;
}

public void setServicecode(String servicecode) {
    this.servicecode = servicecode;
}

public Forecast getForecast() {
    return forecast;
}

public void setForecast(Forecast forecast) {
    this.forecast = forecast;
}

public String getMessage() {
    return message;
}

public void setMessage(String message) {
    this.message = message;
}
}

Forecast.java

public class Forecast {
@SerializedName("month")
@Expose
private Map<String, List<MonthModel>> result;

public Map<String, List<MonthModel>> getResult() {
    return result;
}

public void setResult(Map<String, List<MonthModel>> result) {
    this.result = result;
}
}

MonthModel.java

public class MonthModel {
@SerializedName("id")
@Expose
private String id;
@SerializedName("price")
@Expose
private String price;
@SerializedName("Product")
@Expose
private String product;
@SerializedName("Qty")
@Expose
private String qty;
@SerializedName("date")
@Expose
private String date;

public String getId() {
    return id;
}

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

public String getPrice() {
    return price;
}

public void setPrice(String price) {
    this.price = price;
}

public String getProduct() {
    return product;
}

public void setProduct(String product) {
    this.product = product;
}

public String getQty() {
    return qty;
}

public void setQty(String qty) {
    this.qty = qty;
}

public String getDate() {
    return date;
}

public void setDate(String date) {
    this.date = date;
}
}

Now perform retrofit call like the following

private void getMonthData() {
    Gson gson = new GsonBuilder()
            .setLenient()
            .create();
    Retrofit retrofit = new Retrofit.Builder()
            .addConverterFactory(GsonConverterFactory.create(gson))
            .baseUrl("add_base_url")
            .build();
    RequestInterface requestInterface = retrofit.create(RequestInterface.class);
    Call<Example> call = requestInterface.getMonths();
    call.enqueue(new Callback<Example>() {
        @Override
        public void onResponse(Call<Example> call, Response<Example> response) {
            Map<String, List<MonthModel>> resultMap=response.body().getForecast().getResult();
            Toast.makeText(MainActivity.this, "Success", Toast.LENGTH_SHORT).show();
        }

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

RequestInterface.java

public interface RequestInterface {
@GET("add_your_url_endpoint")
Call<Example> getMonths();
}

Answer 2

I would do it with a custom Json adapter using Gson lib. So you won't have to touch your data structures (if you can not anyway) neither add your infinite key 555.

https://www.tutorialspoint.com/how-to-implement-custom-jsonadapter-using-gson-in-java