How parse json array with multiple objects by gson?

Question

How can I parse json using gson? I have a json array with multiple object types, and I don\'t know, what kind of object I need to create to save this structure. I cannot cha

Answer 1

You can set the methods in your model class very easily. Just make a StringRequest. Below is a snippet:

List inpList;
StringRequest greq = new StringRequest(Request.Method.POST, yourURL, new Response.Listener() {
            @Override
            public void onResponse(String response) {
                try {
                        Log.d("response array===>  ", response.toString());

                        Type type = new TypeToken>(){}.getType();
                        inpList = new Gson().fromJson(response, type);

                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                error.printStackTrace();

            }
        }){
            @Override
            protected Map getParams() throws AuthFailureError {
                Map params = new HashMap();
                //return params back to server, if any
            }
        };

        yourVolley.getRequestQueue().add(greq);

I have used this to generate your model class from you json. Your model class will look something like this:

 package com.example;

import javax.annotation.Generated;
import com.google.gson.annotations.Expose;

@Generated("org.jsonschema2pojo")
public class YourModelClass {

@Expose
private Integer type;
@Expose
private Object object;

/**
* 
* @return
* The type
*/
public Integer getType() {
return type;
}

/**
* 
* @param type
* The type
*/
public void setType(Integer type) {
this.type = type;
}

/**
* 
* @return
* The object
*/
public Object getObject() {
return object;
}

/**
* 
* @param object
* The object
*/
public void setObject(Object object) {
this.object = object;
}

}
-----------------------------------com.example.Object.java-----------------------------------

package com.example;

import javax.annotation.Generated;
import com.google.gson.annotations.Expose;

@Generated("org.jsonschema2pojo")
public class Object {

@Expose
private Integer id;
@Expose
private Integer type;
@Expose
private String city;

/**
* 
* @return
* The id
*/
public Integer getId() {
return id;
}

/**
* 
* @param id
* The id
*/
public void setId(Integer id) {
this.id = id;
}

/**
* 
* @return
* The type
*/
public Integer getType() {
return type;
}

/**
* 
* @param type
* The type
*/
public void setType(Integer type) {
this.type = type;
}

/**
* 
* @return
* The city
*/
public String getCity() {
return city;
}

/**
* 
* @param city
* The city
*/
public void setCity(String city) {
this.city = city;
}

}