Develop Reference

Get a nested value from a json api

I have this json code
{
"status": "success",
"message": null,
"data": {
"19": {
"id": "19",
"created": "2019-01-07 13:26:06",
"createdby": 158,
"touched": "2019-01-07 13:26:06",
"touchedby": 158,
"start": "2019-01-07",
"end": "2019-01-08",
"scoperole": 3,
"scopecorp": 1,
"body": "<p>test</p>",
"language": "en"
},
"20": {
"id": "20",
"created": "2019-01-07 13:26:20",
"createdby": 158,
"touched": "2019-01-07 13:26:20",
"touchedby": 158,
"start": "2019-01-07",
"end": "2019-01-08",
"scoperole": 3,
"scopecorp": 1,
"body": "<p>test1</p>",
"language": "en"
}
},
"error": 0,
"line": 1515,
"debug": null
}
And i want to take the values of "body" (test,test1).
How can i reach them?I left the code that i tried just to see it with //not working next to it.Any ideas please?Also the 19,20 are not the same so i'm not able to get them by just putting the name of a variable(ex JSONObject dataObj =new JSONObject ("data");
Here is my code
private void getJson() {
URL obj = null;
try {
obj = new URL("https://gekon.technologypark.cz/api/v1/notification/");
HttpsURLConnection conn = (HttpsURLConnection) obj.openConnection();
conn.setRequestMethod("POST");
conn.setRequestProperty("ApiSecret", LoginInfo.ApiSecret);
conn.connect();
BufferedReader br = new BufferedReader(new InputStreamReader((conn.getInputStream())));
StringBuilder sb = new StringBuilder();
String output;
while ((output = br.readLine()) != null)
sb.append(output);
JSONObject jsonObj = new JSONObject(sb.toString());
Log.d("test", "response" + jsonObj);
JSONObject dataObj =new JSONObject("data");
JSONObject dataObj19 =dataObj.getJSONObject("22");
String body1 =dataObj19.getString("body");
Log.d("test", "TEST ID" + body1);
pushNotification(notifText);
} catch (Exception e) {
e.printStackTrace();
Log.d("test", "PUSH CATCH" + e);
}
}
Here are my logs
**2019-01-07 14:17:42.778 19712-19712/ibm.gekon.vasileiosvlachakis.gekon D/alekos:
response{"status":"success","message":null,"data":{"22":{"id":"22","created":"2019-01-07
14:11:55","createdby":158,"touched":"2019-01-07
14:11:55","touchedby":158,"start":"2019-01-07","end":"2019-01-08","scoperole":3,"scopecorp":1,"body":"test22</p>","language":"en"}},"error":0,"line":1515,"debug":null}
2019-01-07 14:17:42.785 19712-19712/ibm.gekon.vasileiosvlachakis.gekon
D/alekos: PUSH CATCHorg.json.JSONException: Value data of type
java.lang.String cannot be converted to JSONObject**

Here you can get the value of body key. but this is specific for 19 and 20 JSON object
JSONObject dataObj = new
JSONObject(sb.toString()).getJSONObject("data");
JSONObject dataObj19 =dataObj.getJSONObject("19");
String body1 =dataObj19.getString("body");
JSONObject dataObj20 =dataObj.getJSONObject("20");
String body2 =dataObj20.getString("body");
if Response has multiple JSON object inside data JSON object then you need a loop to retrieve it
JSONObject dataObj =new JSONObject("data");
for(int i=0;i<dataObj.length();i++){
JSONObject data =dataObj.getJSONObject(i);
String body =data .getString("body");
}

JSONObject json = new JSONObject(sb.toString());
String statistics = json.getString("data");
for(Iteraor key=json.keys();key.hasNext();) {
JSONObject keyValue = json.get(key.next());
//now keyValue contains the 19,20 and so on...
String body1 =keyValue.getString("body");
Log.d("test", "TEST ID" + body1);
}
Try this it might work.

best way is to make static key, but you can get all keys and then get value for each one
use
JSONObject dataObj =new JSONObject("data");
Iterator<String> keys=dataObj.keys();
while (keys.hasNext())
{
JSONObject currentObject =dataObj.getJSONObject(keys.next());
String currentBody =currentObject.getString("body");
Log.d("test", "TEST ID" + currentBody);
}`

In JSON response your key should always be static in order to get a particular response from the key.
Here check whether your data JSONObject contains that key or not for error handling.
try {
JSONObject jsonObj = new JSONObject(sb.toString());// assuming this as your main JSONObject
if(jsonObj.has("data")){
JSONObject dataObj =jsonObj.getJSONObject("data");
if(dataObj.has("19")){
JSONObject json19 = dataObj.getJSONObject("19");
// Now here check if the json19 contains the key that you want.
if(json19.has("body")){
String valueBody = json19.getString("body"); // this will give you the value of body
}
}
}
} catch (JSONException e) {
e.printStackTrace();
}

Json parsing error: Unterminated object at character 275 of

my code already get data(jsonstr) from website but can't make it to JSONObject and it make error Json parsing error: Unterminated object at character 2755
protected Void doInBackground(Void... arg0) {
HttpHandler sh = new HttpHandler();
// Making a request to url and getting response
String jsonStr = sh.makeServiceCall(url);
Log.e(TAG, "Response from url: " + jsonStr);
if (jsonStr != null) {
try {
JSONObject jsonObj = new JSONObject(jsonStr);
// Getting JSON Array node
JSONArray contacts = jsonObj.getJSONArray("Destinasi");
// looping through All Contacts
for (int i = 0; i < contacts.length(); i++) {
JSONObject c = contacts.getJSONObject(i);
String nim = c.getString("nama_destinasi");
String name = c.getString("alamat_destinasi");
String alamat= c.getString("deskripsi_destinasi");
and this link that i try to parse
https://ombajuom.000webhostapp.com/json_destinasi.php/Destinasi
please help me and sorry for my english

I see a misplaced ] and } in JSON String. The String it returns NOW is as follows
{
"Destinasi": [
{
"nomor_id": "1",
"nama_destinasi": "Ravi Tamada",
"alamat_destinasi": "Ciledug",
"deskripsi_destinasi": "WAhhh",
"rating_destinasi": "3"
]
}
}
But it should be as below to make it a valid JSON.
{
"Destinasi": [
{
"nomor_id": "1",
"nama_destinasi": "Ravi Tamada",
"alamat_destinasi": "Ciledug",
"deskripsi_destinasi": "WAhhh",
"rating_destinasi": "3"
}
]
}

Web service you shared is not a valid JSON format, to validate your response you can use jsonlint.com,
Thanks

Poorly formatted json parsing

I use code above to parse JSON in a try-catch.
JSONArray jsonRootObject = new JSONArray(text);
JSONArray jsonArray = jsonRootObject.optJSONArray(2);
name = jsonArray.toString();
Toast.makeText(MainActivity.this, name, Toast.LENGTH_LONG).show();
I use 2 as index in code below, because I would get values from candidates. I think, that is strange, because there isn't key-value pairs in array. I would like to get only the first key from this array (In this example subtest1.), its value isn't make sense.
{
"images": [
{
"time": 2.86091,
"transaction":
{
"status": "Complete",
"subject": "test2",
"confidence": 0.77,
"gallery_name": "gallerytest1",
},
"candidates": [
{
"subtest1": "0.802138030529022",
"enrollment_timestamp": "1416850761"
},
{
"elizabeth": "0.802138030529022",
"enrollment_timestamp": "1417207485"
},
{
"elizabeth": "0.777253568172455",
"enrollment_timestamp": "1416518415"
},
{
"elizabeth": "0.777253568172455",
"enrollment_timestamp": "1416431816"
}
]
} ]
}

Try this and see if it solves your problem
JSONArray CandidatesArr = new JSONArray(jsonRootObject.getString("candidates"));
JSONObject CandidatesOBJ = CandidatesArr.getJSONObject(0);
String name=CandidatesOBJ.getString("subtest1");
Edit
To check if your key subset1 exists or not try the following code:
String name=""
if(CandidatesOBJ.has("subtest1")){
name=CandidatesOBJ.getString("subtest1");
}

your parser should be like.FYI JSONArray does not have key-value pairs but JSONObject does.
JSONObject root = new JSONObject(text);
JSONArray jarray = root.optJSONArray("images);
if(jarray != null){
JSONObject jObject = jarray.optJSONObject(0);
if(jObject != null){
JSONArray candidates = jObject.optJSONArray("candidates");
JSONObject jObj = jarray.optJSONObject(0);
if(jObj != null){
String subTest = jObj.optString("subtest1");
}
}
}

Getting force close error in android in json parsing of google detect translate api

I am using this code for detect the source language..
jsonObj = new JSONObject(response);
JSONObject jsoObj2 = jsonObj.getJSONObject("data");
JSONArray jArray = jsoObj2.getJSONArray("detections");
JSONObject steps = jArray.getJSONObject(0);
srcLanguage = steps.getString("language");
Here is the response.
{
"data": {
"detections": [
[
{
"language": "fr",
"isReliable": false,
"confidence": 0.41935483
}
]
]
}
}
Kindly help me in order to parse this json response.
I debug that code and getting this exception.
org.json.JSONException: Value [{"isReliable":false,"confidence":0.41935483,"language":"fr"}] at 0 of type org.json.JSONArray cannot be converted to JSONObject

Change it to this:
jsonObj = new JSONObject(response);
JSONObject jsoObj2 = jsonObj.getJSONObject("data");
JSONArray jArray = jsoObj2.getJSONArray("detections");
JSONArray jArray2 = jArray.getJSONArray(0);
JSONObject steps = jArray2.getJSONObject(0);
srcLanguage = steps.getString("language");
Because there is an array in the array.

If above mentioned is the response you need to have a minor change
jsonObj = new JSONObject(response);
JSONObject jsoObj2 = jsonObj.getJSONObject("data");
JSONArray jArray = jsoObj2.getJSONArray("detections");
JSONArray steps = jArray.getJSONArray(0);
srcLanguage = jArray.getJSONObject(0).getString("language");
Try his please...

Parsing JSON response in Android

I am writing a httpget request for android that queries the foursquare api for nearby event. The JSON responce I receive back is
{"groups": [
{
"type": "Nearby",
"venues": [
{
"id": 2587838,
"name": "Marriott Druids Glen Hotel Newtownmountkennedy",
"primarycategory": {
"id": 79281,
"fullpathname": "Travel:Resort",
"nodename": "Resort",
"iconurl": "http://foursquare.com/img/categories/travel/resort.png"
},
"address": "Newtownmountkennedy",
"city": "Newtownmountkennedy",
"state": "",
"verified": false,
"geolat": 53.091717,
"geolong": -6.079162,
"stats": {
"herenow": "0"
},
"distance": 5596
},
There can be many of these venues. I can get it to print out the venues information using this code
InputStream instream = entity.getContent();
String result= convertStreamToString(instream);
Log.i("Hoosheer0",result);
// A Simple JSONObject Creation
JSONObject json=new JSONObject(result);
JSONArray venues = json.getJSONArray("groups");
//JSONArray docsArray = jObject.getJSONArray("docs");
for (int i = 0; i<venues.length();i++){
String name = venues.getJSONObject(i).optString("venues");
//String venueName = name.
Log.i("This is a name... pleasse", name);
}
instream.close();
How can I access the geolat & geolong values?

I believe placing this code inside your for-loop should do the trick:
JSONObject venueObject = venues.getJSONObject(i);
double geoLat = venueObject.getDouble("geolat");
double geoLong = venueObject.getDouble("geolong");

You can check here and pick a JSON library to use to get at those values.