Develop Reference

How to parse this type of json array in android?

I have know to parser JSON array in single array but how to pass multiple JSON array and set it value to require
{"scode":"200","all_menu":[{"app_menu_id":"67","app_menu_name":"Demograpics","all_sub_menu":[{"app_menu_id":"67","app_sub_menu_id":"47","app_sub_menu_name":"\u0a97\u0ac1\u0a9c\u0ab0\u0abe\u0aa4\u0ac0","app_sub_menu_image":"http:\/\/app.hindipublic.com\/app_allwhatsupstatus\/menu\/medium\/8451504072003.jpg"}],"sub_menu":"true"},{"app_menu_id":"68","app_menu_name":"Lyrics","all_sub_menu":[{"app_menu_id":"68","app_sub_menu_id":"48","app_sub_menu_name":"Music","app_sub_menu_image":"http:\/\/app.hindipublic.com\/app_allwhatsupstatus\/menu\/medium\/4681504072092.jpg"}],"sub_menu":"true"},{"app_menu_id":"69","app_menu_name":"Adult","all_sub_menu":[{"app_menu_id":"69","app_sub_menu_id":"49","app_sub_menu_name":"Double
Meaning","app_sub_menu_image":"http:\/\/app.hindipublic.com\/app_allwhatsupstatus\/menu\/medium\/9931504072151.jpg"}],"sub_menu":"true"},{"app_menu_id":"70","app_menu_name":"Emotions","all_sub_menu":[{"app_menu_id":"70","app_sub_menu_id":"50","app_sub_menu_name":"Love","app_sub_menu_image":"http:\/\/app.hindipublic.com\/app_allwhatsupstatus\/menu\/medium\/7611504072164.jpg"}],"sub_menu":"true"},{"app_menu_id":"71","app_menu_name":"Wishes","all_sub_menu":[{"app_menu_id":"71","app_sub_menu_id":"51","app_sub_menu_name":"Good
Morning","app_sub_menu_image":"http:\/\/app.hindipublic.com\/app_allwhatsupstatus\/menu\/medium\/5171504072183.jpg"}],"sub_menu":"true"},{"app_menu_id":"72","app_menu_name":"Among Friend","all_sub_menu":[{"app_menu_id":"72","app_sub_menu_id":"52","app_sub_menu_name":"Friendship","app_sub_menu_image":"http:\/\/app.hindipublic.com\/app_allwhatsupstatus\/menu\/medium\/4411504072205.jpg"}],"sub_menu":"true"},{"app_menu_id":"73","app_menu_name":"Jokes","all_sub_menu":[{"app_menu_id":"73","app_sub_menu_id":"53","app_sub_menu_name":"Santa
Banta","app_sub_menu_image":"http:\/\/app.hindipublic.com\/app_allwhatsupstatus\/menu\/medium\/4331504072225.jpg"}],"sub_menu":"true"},{"app_menu_id":"74","app_menu_name":"Featured","all_sub_menu":[{"app_menu_id":"74","app_sub_menu_id":"54","app_sub_menu_name":"Ganpati
Bappa","app_sub_menu_image":"http:\/\/app.hindipublic.com\/app_allwhatsupstatus\/menu\/medium\/4771504072247.jpg"}],"sub_menu":"true"}]}

Suppose "response" is your JSONResponse
JSONObject jsonObject = new JSONObject(response);// This is used to get jsonObject from response
String sCode=jsonObject.optString("scode"); // This is how you can parse string from jsonObject
JSONArray allmenuArray=jsonObject.optJSONArray("all_menu"); //This is how you can parse JsonArray from jsonObject
for(int i=0;i<allmenuArray.length();i++){
JSONObject objectJson=allmenuArray.optJSONObject(i);//This is how you can parse jsonObject from jsonArray
}
Like This you can parse all your jsonObject and jsonarray. Just follow these steps you can easily parse your full JSONResponse

Try this.
try {
JSONObject jsonObject = new JSONObject("JSONResponse");
String scode = jsonObject.optString("scode");
JSONArray allmenuArray = jsonObject.optJSONArray("all_menu");
for (int i = 0; i < allmenuArray.length(); i++) {
JSONObject objectJson = allmenuArray.optJSONObject(i);
boolean sub_menu = objectJson.getBoolean("sub_menu");
String app_menu_id = objectJson.getString("app_menu_id");
String app_menu_name = objectJson.getString("app_menu_name");
JSONArray all_sub_menu = objectJson.getJSONArray("all_sub_menu");
for (int j = 0; j < all_sub_menu.length(); j++) {
JSONObject data = allmenuArray.optJSONObject(j);
Log.e("app_menu_id", data.getString("app_menu_id"));
Log.e("app_sub_menu_id", data.getString("app_sub_menu_id"));
Log.e("app_sub_menu_name", data.getString("app_sub_menu_name"));
Log.e("app_sub_menu_image", data.getString("app_sub_menu_image"));
}
}
} catch (JSONException e) {
Log.e("ERROr", e.toString());
}

org.json.JSONException: No value

org.json.JSONException: No value in array
StringRequest req = new StringRequest(Request.Method.GET, url, new Response.Listener<String>() {
#Override
public void onResponse(String s) {
try {
questionsList = new ArrayList<QuestionsBean>();
JSONObject jsonObject = new JSONObject(s);
JSONArray question = jsonObject.getJSONArray("questions");
for (int i = 0; i < question.length(); i++) {
JSONObject x = question.getJSONObject(i);
QuestionsBean u = new QuestionsBean();
u.setDate(x.getString("date"));
u.setQuestion(x.getString("question_text"));
JSONObject bject = new JSONObject();
JSONArray answers = bject.getJSONArray("answers");
for (int j = 0; j < answers.length(); j++) {
JSONObject xx = answers.getJSONObject(i);
u.setAnswer_body(xx.getString("Answer_body"));
}
questionsList.add(u);

You are not calling getJSONArray on the correct JSONObject. Use
JSONArray answers = x.getJSONArray("answers");
Also, since your JSONArray could be null, use optJSONArray to avoid the exception and check if it's null before continuing.
Something like
JSONArray answers = x.optJSONArray("answers");
if (answers != null) {
// for loop
}

JSONObject bject = new JSONObject();
JSONArray answers = bject.getJSONArray("answers");
You constructed here an empty JSONObject, so it is normal what it cannot find 'answers' in it.

org.json.JSONException: Find specific string from Json Object

I am working in Android and finding json from internet that looks like this:
JSONObject childObject=me.getJSONObject(pos);
String fisrtkey=childObject.getString("A");
JSONArray jsonArray=childObject.getJSONArray("c");
I want to find C21 that is in the A. See the json coming from request.
Can someone help me?

try {
JSONObject j=new JSONObject(data);
JSONArray c= null;
c = j.getJSONArray("This");
JSONObject item=c.getJSONObject(0);
JSONArray me=item.getJSONArray("me");
for(int pos=0;pos<me.length();pos++)
{
JSONObject childObject=me.getJSONObject(pos);
String fisrtkey=childObject.getString("A");
JSONArray jsonArray=childObject.getJSONArray("c");
}
} catch (JSONException e1) {
e1.printStackTrace();
}
//hope this will help you and also check json is invalid or not ,you missed
// bracket of jsonarray "me".

You have missed THIS json array while parsing. First get that and from that json object and then get ME json array. Something like this
JSONObject j = new JSONObject(data);
JSONArray c = j.getJSONArray("This");
JSONObject j1 = c.getJSONArray(0);
JSONArray d = j.getJSONArray("me");
for(int n = 0; n < c.length(); n++) {
JSONObject item = c.getJSONObject(n);
System.out.println(item.getString("A"));
}

Try this:
JSONObject j = new JSONObject(data);
JSONArray c = j.getJSONArray("me");
for(int n = 0; n < c.length(); n++) {
JSONObject person = (JSONObject) c.get(n );
String id = person.getString("A");
...
}

Retrieving Data with JSON in Android

My application connects to the web and retrieves a JSON file. I am having some issues retrieving the data that I need from this file. Here is the link to the JSON file: http://api.wunderground.com/api/f9d9bc3cc3834375/forecast/q/CA/San_Francisco.json
Here is a snippet of what it looks like:
I would like to get the value of the "period" variable in the first JSon object within the "forecastday" array, which should be 0. Here is how i'm looking at this. "forecastday" is the array, within that there are a number of JSon objects, each containing variables like "period","icon"....."pop".
In my code, I attempt to get the JSON array "forecastday" and then get the first Json object of the array, I then retrieve the value of "period" in that object and set it in a TextView:
protected void onPostExecute(String response) {
if(response == null) {
response = "THERE WAS AN ERROR";
}
progressBar.setVisibility(View.GONE);
try {
JSONObject jsonObj = new JSONObject(response);
JSONArray contacts = jsonObj.getJSONArray("forecastday");
JSONObject c = contacts.getJSONObject(0);
String period = c.getString("period");
responseView.setText(period);
} catch (JSONException e) {
e.printStackTrace();
}
}
When I run the code, nothing is being retrieved. I'm new to working with JSon and am wondering if I'm looking at this wrong. Please help.

Your "forecastday" JSONArray is inside the "txt_forecast" JSONObject that is inside the "forecast" JSONObject of your response, so you have to extract your JSONArray from this JSONObject and not from the root JSON response :
try {
JSONObject jsonObj = new JSONObject(response);
--> JSONObject forecatsObj = jsonObj.getJSONObject("forecast");
--> JSONObject txtForecatsObj = forecatsObj.getJSONObject("txt_forecast");
JSONArray contacts = txtForecatsObj.getJSONArray("forecastday");
...

You were close but it is incorrect, try like this:
JSONObject jsonObj = new JSONObject(response);
JSONObject forecast = jsonObj.getJSONObject("forecast");
JSONObject txtForecast = forecast.getJSONObject("txt_forecast");
JSONArray forecastDay = txtForecast.getJSONArray("forecastday");
//parse the first period value
String period = forecastDay.getJSONObject(0).getString("period");
responseView.setText(period);

Try this code :
try {
JSONObject jsonObj = new JSONObject(response);
JSONObject forecastObj = jsonObj.getJSONObject("forecast");
JSONObject txt_forecastObj = forecastObj.getJSONObject("txt_forecast");
JSONArray foracastdayArray = txt_forecastObj.getJSONArray("foracastday");
JSONObject oOjb0 = foracastdayArray.getJSONObject(0);
String period = oOjb0.getString("perioed");
}catch (Exception e){
}

This code works for me fine:
JSONObject jsonResponse = new JSONObject(responce);
JSONArray jsonMainNode = jsonResponse.optJSONArray("forecastday");
for (int i = 0; i < jsonMainNode.length(); i++) {
JSONObject jsonChildNode = jsonMainNode.getJSONObject(i);
String period = jsonChildNode.optString("period");
responceView.setText(period);
}

Problems with getting values from JSON object

I'm trying to get data once user logged in successfully but I never get any of results, what I am doing is next:
// response is my request to server
JSONObject obj = new JSONObject(response);
Log.d("RESPONSE",obj.toString());
so in log I do see values, like:
04-19 11:28:16.729: D/RESPONSE(3162): {"data":[{"loses":3,"username":"benedict","level":1,"strength":15,"experience":null,"gold":10,"password":"benedict","intelligence":5,"agility":10,"wins":5}],"status":true}
but once I try to read username for example like this:
String username = obj.getString("username");
The code above ^ gives me nothing in my string..
Any help how I can retrieve data from JSONObject? Thanks!

That is because the username is present in the data object, which happens to be an JSONArray. Get the data array from the response object, traverse through each JSONObject in the array, and from each object, extract your username.
Something like this:-
JSONObject obj = new JSONObject(response);
JSONArray data = obj.getJSONArray("data");
for(int i=0;i<data.length();i++){
JSONObject eachData = data.getJSONObject(i);
System.out.println("Username= "+ eachData.getString("username"));
}

your field username is in array data. To access into this try :
JSONObject obj = new JSONObject(response);
JSONArray array = obj.getJSONArray("data");
for(int i = 0; i < array.length(); ++i){
JSONObject data = array.getJSONObject(i);
String username = data.getString("username");
}

You need to first get JSONArray which is data :
JSONArray data = null;
data = json.getJSONArray("data");
for(int i = 0; i < data.length(); i++){
JSONObject c = data.getJSONObject(i);
String username = c.getString("username");
}
You can get idea about parsing JSON from HERE

Try this...
try {
JSONObject object = new JSONObject(response);
JSONArray Jarray = object.getJSONArray("data");
for (int i = 0; i < Jarray.length(); i++) {
JSONObject Jasonobject = Jarray.getJSONObject(i);
String loose= Jasonobject.getString("loses");
String username=Jasonobject.getString("username");
.......
........
}
} catch (JSONException e) {
Log.e("log_txt", "Error parsing data " + e.toString());
}