android get json array nested in array

Question

Something like this question

How to save in variables?

But with this json code:

{
 "restarutant": [
 {
 "name": "Hotel Raja",
 "photo": "http:\/\/i.imgur.com\/Mzt4u.jpg",
 "address": "93, 2ndc ross, GDP etx.",
 "area": "Vylaikaval",
 "city": "Bangalore",
 "rating": "4",
 "cuisines": {
 "first": "Chinese",
 "second": "Korean"
 }
 },
 {
 "name": "Hotel Raja2",
 "photo": "http:\/\/i.imgur2.com\/Mzt4u.jpg",
 "address": "93, 2ndc ross, GDP etx. number2",
 "area": "Vylaikaval2",
 "city": "Bangalore2",
 "rating": "4",
 "cuisines": {
 "first": "Chinese2",
 "second": "Korean2"
 }
 }
 ]
}

Code:

JSONObject json = new JSONObject(thepreviousjson);
JSONArray jArray = json.getJSONArray("restaurant");
String name[] = new String[jArray.length()];
String photo[] = new String[jArray.length()];
String address[] = new String[jArray.length()];
String area[] = new String[jArray.length()];
String city[] = new String[jArray.length()];
String rating[] = new String[jArray.length()];
String cuisines[] = new String[jArray.length()];
String first[] = new String[jArray.length()];
String second[] = new String[jArray.length()];
for(int i=0; i<jArray.length(); i++){
 JSONObject json_data = jArray.getJSONObject(i);
 name[i] = json_data.getString("name");
 photo[i] = json_data.getString("photo");
 address[i] = json_data.getString("address");
 area[i] = json_data.getString("area");
 city[i] = json_data.getString("city");
 rating[i] = json_data.getString("rating");
}

The point is to have stored: name[0] = "Hotel Raja"... name[1] = "Hotel Raja2" first[0] = Chinese, second[0] = Korean, first[1] = Chinese2, second[1] = Korean2

I have tried several combination, but nothing happens, what do I need to modify in my code? thanks

Answer 1

You can use List instead of String Array.

Better to use Model Concept.

Step:1)

Create a model for Restarutant.java

public class Restarutant {
 private String name;
 private String photoUrl;
 private String address;
 private String area;
 private String city;
 private int rating;
 private Cuisines cuisines;
 public String getName() {
 return name;
 }
 public void setName(String name) {
 this.name = name;
 }
 public String getPhotoUrl() {
 return photoUrl;
 }
 public void setPhotoUrl(String photoUrl) {
 this.photoUrl = photoUrl;
 }
 public String getAddress() {
 return address;
 }
 public void setAddress(String address) {
 this.address = address;
 }
 public String getArea() {
 return area;
 }
 public void setArea(String area) {
 this.area = area;
 }
 public String getCity() {
 return city;
 }
 public void setCity(String city) {
 this.city = city;
 }
 public int getRating() {
 return rating;
 }
 public void setRating(int rating) {
 this.rating = rating;
 }
 public Cuisines getCuisines() {
 return cuisines;
 }
 public void setCuisines(Cuisines cuisines) {
 this.cuisines = cuisines;
 }
}

Step:2) Create Model for Cuisines

public class Cuisines {
 private String first;
 private String second;
 public String getFirst() {
 return first;
 }
 public void setFirst(String first) {
 this.first = first;
 }
 public String getSecond() {
 return second;
 }
 public void setSecond(String second) {
 this.second = second;
 }
}

Final Step: Now how to store the data in Model after Parsing

List<Restarutant> list = new ArrayList<Restarutant>();
 try {
 JSONObject json = new JSONObject(thepreviousjson);
 JSONArray jArray = json.getJSONArray("restaurant");
 for (int i = 0; i < jArray.length(); i++) {
 JSONObject json_data = jArray.getJSONObject(i);
 Restarutant data = new Restarutant();// Create Object Here
 data.setName(json_data.getString("name"));
 data.setPhotoUrl(json_data.getString("photo"));
 data.setAddress(json_data.getString("address"));
 data.setArea(json_data.getString("area"));
 data.setCity(json_data.getString("city"));
 JSONObject cuisines = json_data.getJSONObject("cuisines");
 Cuisines cuisine = new Cuisines();// Create Object here
 cuisine.setFirst(cuisines.getString("first"));
 cuisine.setSecond(cuisines.getString("second"));
 data.setCuisines(cuisine);// setting the cuisine
 list.add(data);// Finally adding the model to List
 }
 } catch (JSONException e) {
 e.printStackTrace();
 }

Now how to retrieve value from List

for(int i=0;i<list.size();i++){
 Restarutant restarutant=list.get(i);
 String name=restarutant.getName();
 String first=restarutant.getCuisines().getFirst();
 String second=restarutant.getCuisines().getSecond();
 System.out.println("Name: "+name+"First "+first+"Second "+second);
 }

OutPut:

Name:Hotel Raja First:Chiense Second: Korean
Name:Hotel Raja2 First:Chiense2 Second: Korean2

Hope this will help you.

• user2580401: this works for me, after editing a lot of code, I reached what I want, hope this help others in the future and thanks to you for you time.

Answer 2

you have to use ArrayList

for example

List<String> name = new ArrayList<String>();
for(int i=0; i<jArray.length(); i++){
JSONObject json_data = jArray.getJSONObject(i);
//by add new value to List the key will be the same key inside JSONarray 
name.add(json_data.getString("name"));
}
//and to call back value from List name
//get first element 0
String first_name = name.get(0);

• user2580401: but the "first" and "second" values, that two nested values are the problem.

Answer 3

Create a parcelable for your json response, see the code below:-

public class ObjectModel implements Parcelable{
 public String name;
 public String photo;
 public String address;
 public String area;
 public String city;
 public String rating;
 public HashMap<String,Object> cuisines;
 public ObjectModel(Parcel in)
 {
 name = in.readString();
 photo = in.readString();
 address = in.readString();
 area = in.readString();
 city = in.readString();
 rating = in.readString();
 in.readMap(cuisines, Object.class.getClassLoader());
 }
 @SuppressWarnings("rawtypes")
 public static final Parcelable.Creator CREATOR = new Parcelable.Creator() {
 @Override
 public ObjectModel createFromParcel(Parcel source) 
 {
 return new ObjectModel(source);
 }
 @Override
 public ObjectModel[] newArray(int size) 
 {
 return new ObjectModel[size];
 }
 }; 
 @Override
 public int describeContents() 
 {
 return 0;
 }
 @Override
 public void writeToParcel(Parcel dest, int flags) 
 {
 dest.writeString(name);
 dest.writeString(photo);
 dest.writeString(address);
 dest.writeString(area);
 dest.writeString(city);
 dest.writeString(rating);
 dest.writeMap(cuisines);
 }
 public ObjectModel()
 {
 }
}
//Write the parser 
private void parseJson(JSONObject baseJson) throws Exception
 {
 JSONArray jsonObjArray = baseJson.getJSONArray("restaurant");
 ObjectModel[] objectModelArray = new ObjectModel[jsonObjArray.length()];
 for(int index = 0;index<jsonObjArray.length();index++)
 {
 ObjectModel obj = new ObjectModel();
 HashMap<String,Object> data = new HashMap<String, Object>();
 JSONObject json = jsonObjArray.getJSONObject(index);
 obj.name = json.getString("name");
 obj.photo = json.getString("photo");
 obj.address = json.getString("address");
 obj.area = json.getString("area");
 obj.city = json.getString("city");
 obj.rating = json.getString("rating");// if it is a string 
 JSONObject cuis = json.getJSONObject("cuisines");
 data.put("first", cuis.getString("first"));
 data.put("second", cuis.getString("second"));
 obj.cuisines = data;
 objectModelArray[index] = obj;
 }
 }