Android read JSONArray into a JSONArray [closed]

Answer 1

Here is an example of how you would parse it using gson - https://code.google.com/p/google-gson/. It really makes life a lot easier, you create your class structure once and then just reuse it throughout your application.

package com.example.jsonparse;

import java.util.List;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;

import com.google.gson.Gson;

public class MainActivity extends Activity {

    private static final String TAG = MainActivity.class.getSimpleName();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        final String json = "{\"product\": {\"name\": \"myApp\",\"config\": [{\"grade\": \"elementary school\",\"courses\": [{\"name\": \"Math\",\"teacher\": \"David\"}]}]}}";

        JsonParseResult result = new Gson().fromJson(json, JsonParseResult.class);

        for (Config config : result.getProduct().getConfig()) {

            Log.d(TAG, "Courses for grade: " + config.getGrade());

            for (Course course : config.getCourses()) {
                Log.d(TAG, "Course Name: " + course.getName());
                Log.d(TAG, "Course Teacher: " + course.getTeacher());
            }
        }
    }

    public class JsonParseResult {

        private Product product;

        public JsonParseResult(Product product) {
            this.product = product;
        }

        public Product getProduct() {
            return product;
        }

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

    public class Product {

        private String name;
        private List config;

        public Product(String name, List config) {
            this.name = name;
            this.config = config;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public List getConfig() {
            return config;
        }

        public void setConfig(List config) {
            this.config = config;
        }

    }

    public class Config {

        private String grade;
        private List courses;

        public Config(String grade, List courses) {
            this.grade = grade;
            this.courses = courses;
        }

        public String getGrade() {
            return grade;
        }

        public void setGrade(String grade) {
            this.grade = grade;
        }

        public List getCourses() {
            return courses;
        }

        public void setCourses(List courses) {
            this.courses = courses;
        }

    }

    public class Course {

        private String name;
        private String teacher;

        public Course(String name, String teacher) {
            this.name = name;
            this.teacher = teacher;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public String getTeacher() {
            return teacher;
        }

        public void setTeacher(String teacher) {
            this.teacher = teacher;
        }
    }
}