parsing nested JSON array using volley library in android

parsing nested JSON array using volley library in android - android

How can I parse nested JSON array using volley library?
My JSON data structure screenshot.
https://prnt.sc/pbaea5
I need to perse score value.
JSONArray jsonArray = response.getJSONArray("matches");
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObjectMatchs = jsonArray.getJSONObject(i);
// bat_team node is JSON Object
JSONObject bat_teamData = jsonObjectMatchs.getJSONObject("bat_team");
JSONArray jsonArrayInnings = bat_teamData.getJSONArray("innings");
JSONObject jsonObjectInnings = jsonArrayInnings.getJSONObject(i);
String bat_team_score = jsonObjectInnings.getString("score");
}

You need to iterate further on
jsonArrayInnings using another loop but in your code you are using i of parent loop.
It will not work properly.

Related

Android Studio Volley JSON REST API Parsing

Writing Android Application, Need to Parse JSON Data which is nested
Below is Actual data received from http.
Currently using Volley,
JSONArray dataJSONArray = response.getJSONArray("data");
Need example code to parse and display data from below mentioned JSON data
{"data":[{"counting_area_id":3,"name":"Utilization","parking_area_id":1, "free":3,"total":200,"location_latitude":null,"location_longitude":null,"places":10,
"children":[{"counting_area_id":1,"name":"Basement 1","parking_area_id":1, "free":0,"total":116,"location_latitude":null,"location_longitude":null,"places":0,
"children":[]},{"counting_area_id":73,"name":"Basement 2","parking_area_id":1, "free":3,"total":121,"location_latitude":null,"location_longitude":null,"places":3,
"children":[]}]}]}

You need to passed your data to JSONArray and parse through it using for loop ,like below code :
JSONArray jsonArray = response.getJSONArray("data");//getting array
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonobject= jsonArray.getJSONObject(i);//getting first element
String id= jsonobject.getString("counting_area_id");//value of counting_area_id ,get all value in same way i.e location,places etc.
System.out.println(id);
JSONArray jsonObject1= object.getJSONArray("children"); //getting children array
for (int j = 0; j < jsonObject1.length(); j++) {
JSONObject object1 = jsonObject1.getJSONObject(j);
String id= object1.getString("counting_area_id");//same as before
}
}

I am trying to parse through a json could some one help me

I excuted the followinf api request
https://api-v3.mbta.com/predictions?sort=arrival_time&filter%5Bstop%5D=70028%2C70029
and I am having the following parsing problem.
Failed to parse JSON
org.json.JSONException: Value [{"attributes":{"arrival_time":"2018-04-25T13:20:01-04:00","departure_time":"2018-04-25T13:20:01-04:00",
"direction_id":1,"schedule_relationship":null,"status":null,"stop_sequence":140,"track":null}
,"id":"prediction-36315805-70029-140","relationships":{"route":{"data":{"id":"Orange","type":"route"}},"stop":
{"data":{"id":"70029","type":"stop"}},"trip":{"data":{"id":"36315805","type":"trip"}}},"type":"prediction"},{"attributes"
:{"arrival_time":"2018-04-25T13:26:03-04:00","departure_time":"2018-04-25T13:26:03-04:00","direction_id":0,"schedule_relationship":null,
"status":null,"stop_sequence":50,"track":null},"id":"prediction-36315802-70028-50","relationships":{"route":{"data":{"id":"Orange","type":"route"}},"stop":{"data":{"id":"70028","type":"stop"}},"trip":{"data":{"id":"36315802","type":"trip"}}},"type":"prediction"},{"attributes":{"arrival_time":"2018-04-25T13:29:28-04:00","departure_time":"2018-04-25T13:29:28-04:00","direction_id":1,"schedule_relationship":null,"status":null,"stop_sequence":140,"track":null},"id":"prediction-36315806-70029-140","relationships":{"route":{"data":{"id":"Orange","type":"route"}},"stop":{"data":{"id":"70029","type":"stop"}},"trip":{"data":{"id":"36315806","type":"trip"}}},"type":"prediction"},{"attributes":{"arrival_time":"2018-04-25T13:33:00-04:00","departure_time":"2018-04-25T13:33:00-04:00","direction_id":0,"schedule_relationship":null,"status":null,"stop_sequence":50,"track":null},"id":"prediction-36315803-70028-50","relationships":{"route":{"data":{"id":"Orange","type":"route"}},"stop":{"data":{"id":"70028","type":"stop"}},"trip":{"data":{"id":"36315803","type":"trip"}}},"type":"prediction"},{"attributes":{"arrival_time":"2018-04-25T13:36:20-04:00","departure_time":"2018-04-25T13:36:20-04:00","direction_id":1,"schedule_relationship":null,"status":null,"stop_sequence":140,"track":null},"id":"prediction-36315807-70029-140","relationships":{"route":{"data":{"id":"Orange","type":"route"}},"stop":{"data":{"id":"70029","type":"stop"}},"trip":{"data":{"id":"36315807","type":"trip"}}},"type":"prediction"},{"attributes":{"arrival_time":"2018-04-25T13:44:44-04:00","departure_time":"2018-04-25T13:44:44-04:00","direction_id":0,"schedule_relationship":"ADDED","status":null,"stop_sequence":50,"track":null},"id":"prediction-ADDED-1524238424-70028-50","relationships":{"route":{"data":{"id":"Orange","type":"route"}},"stop":{"data":{"id":"70028","type":"stop"}},"trip":{"data":{"id":"ADDED-1524238424","type":"trip"}}},"type":"prediction"},{"attributes":{"arrival_time":"2018-04-25T13:52:00-04:00","departure_time":"2018-04-25T13:52:00-04:00","direction_id":1,"schedule_relationship":null,"status":null,"stop_sequence":140,"track":null},"id":"prediction-36315809-70029-140","relationships":{"route":{"data":{"id":"Orange","type":"route"}},"stop":{"data":{"id":"70029","type":"stop"}},"trip":{"data":{"id":"36315809","type":"trip"}}},"type":"prediction"},{"attributes":{"arrival_time":"2018-04-25T13:52:39-04:00","departure_time":"2018-04-25T13:52:39-04:00","direction_id":0,"schedule_relationship":null,"status":null,"stop_sequence":50,"track":null},"id":"prediction-36315757-70028-50","relationships":{"route":{"data":{"id":"Orange","type":"route"}},"stop":{"data":{"id":"70028","type":"stop"}},"trip":{"data":{"id":"36315757","type":"trip"}}},"type":"prediction"},{"attributes":{"arrival_time":"2018-04-25T14:00:20-04:00","departure_time":"2018-04-25T14:00:20-04:00","direction_id":0,"schedule_relationship":null,"status":null,"stop_sequence":50,"track":null},"id":"prediction-36315758-70028-50","relationships":{"route":{"data":{"id":"Orange","type":"route"}},"stop":{"data":{"id":"70028","type":"stop"}},"trip":{"data":{"id":"36315758","type":"trip"}}},"type":"prediction"},{"attributes":{"arrival_time":"2018-04-25T14:09:34-04:00","departure_time":"2018-04-25T14:09:34-04:00","direction_id":1,"schedule_relationship":null,"status":null,"stop_sequence":140,"track":null},"id":"prediction-36315810-70029-140","relationships":{"route":{"data":{"id":"
I am parsing the code like this
private void parseItems(List<GalleryItem> items, JSONObject jsonBody)
throws IOException, JSONException {
JSONObject photosJsonObject = jsonBody.getJSONObject("data");
JSONArray photoJsonArray = photosJsonObject.getJSONArray("attributes");
for (int i = 0; i < photoJsonArray.length(); i++) {
JSONObject photoJsonObject = photoJsonArray.getJSONObject(i);
GalleryItem item = new GalleryItem();
item.setId(photoJsonObject.getString("arrival_time"));
item.setCaption(photoJsonObject.getString("departure_time"));
item.setUrl(photoJsonObject.getString("departure_time"));
items.add(item);
}
}
could some one tell me where I am making a mistake when parsing the object.
thank you

Well, from your posted json data is an array and attributes is an object, you were trying to parse them the other way around. Try this:
JSONArray data = jsonBody.getJSONArray("data");
for (int i = 0; i < data.length(); i++) {
JSONObject singleData = data.getJSONObject(i);
JSONObject attributes = singleData.getJSONObject("attributes");
GalleryItem item = new GalleryItem();
item.setId(attributes.getString("arrival_time"));
item.setCaption(attributes.getString("departure_time"));
item.setUrl(attributes.getString("departure_time"));
items.add(item);
}

As data is a JSONArray, and your photosJsonObject should be JSONArray not object, which contains the objects. Rest is ok I think.

Parsing json array with no arrayobject name in android

I want to parse the following data, everything is done but i'm confused at this last stage:
["ABC","DEF","GHI"]
How can I parse this type of json data?

Do it like this
JSONArray arr = new JSONArray(data); // assuming your json array is store in data
for(int i = 0; i < arr.length(); i++)
{
String str = arr.getString(i); // will return one string at a time
}

How to parse JSON Array in android?

I have a JSON Array as follows:
jSONArray: {"li":[["apple\r\n","orange\r\n","mango\r\n"]]}
I want only the list as [apple, orange, mango] in android. Can anybody explain how to parse it in android without \r\n. I have tried as follows:
JSONArray jsonArray1 = new JSONArray(results.toString()); // which is the JSON Array
for(int i=0; i < jsonArray1.length(); i++) {
JSONObject jsonobject = new JSONObject();
JSONObject issue = jsonArray1.getJSONObject(i);
String _pubKey = issue.getString("li");
}
So, I am getting pubKey as [["apple\r\n","orange\r\n","mango\r\n"]]. I dont want \r\n.

Just replace those characters while parsing.
Example: If fruit is the string you want to put in your JSONArray jsonArray, call:
jsonArray.put(fruit.trim().replace("\r", "").replace("\n", ""));

how to parse JSON string with value as array

i need to parse the JSON data given below.
{"result":[{"bookId":142645,"bookpb":"MF",
"bookTs":1328999630000,"clipStatus":"D","bookDetail":{"arrival":1,"purchase":1,"sold":1},
"hierarchies":{"categories":["4"],"events":[]},"shopId":769752},
upto "sold" it is working fine.but when i am trying to parse categories it is not working.
given below is the code for parsing the data.
ArrayList<BookItem> resultdata = new ArrayList<BookItem>();
JSONArray jsonArray = (new JSONObject(inputString))
.getJSONArray("result");
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObject = jsonArray.getJSONObject(i);
item = new BookItem();
item.setbookId(jsonObject.optString(book_ID));
item.setPurchase(jsonObject.optInt(PURCHASE));
item.setArrival(jsonObject.optInt(ARRIVAL));
item.setSold(jsonObject.optInt(SOLD));
item.setbookTs(jsonObject.optString(book_TS));
JSONObject hierarchies=jsonObject.getJSONObject(HIERARCHY);
item.setCategory(hierarchies.getInt("categories"));
resultdata.add(item);
}
can anybody help me???
i came to know that this is the problem of
{"categories":["4"],"events":[]}
data.how can i parse this array value?

categories is an JSONArray in order to get JSONArray
replace
item.setCategory(hierarchies.getInt("categories"));
with
item.setCategory(hierarchies.getJSONArray("categories").getInt(0));

For your purpose the best solution is probably GSON library. It do serialization and deserialization on its own and you will get your objects.
http://code.google.com/p/google-gson/

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The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

parsing nested JSON array using volley library in android - android

You need to iterate further on jsonArrayInnings using another loop but in your code you are using i of parent loop. It will not work properly.

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Android Studio Volley JSON REST API Parsing

I am trying to parse through a json could some one help me

Parsing json array with no arrayobject name in android

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how to parse JSON string with value as array

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