No values for JSON array

Question

Heyy guyz I am receiving JSON using google places details api then In that Json I am looking for "reviews" array.But in logcat I am getting system error that No values for reviews.But I checked in Json that there exist reviews array.Where is the problem?Thanx in advance.This is my JSON data:

 {
 "result" : {
 "address_components" : [
 {
 "long_name" : "Kalyan",
 "short_name" : "Kalyan",
 "types" : [ "locality", "political" ]
 },
 {
 "long_name" : "Maharashtra",
 "short_name" : "Maharashtra",
 "types" : [ "administrative_area_level_1", "political" ]
 },
 {
 "long_name" : "India",
 "short_name" : "IN",
 "types" : [ "country", "political" ]
 },
 {
 "long_name" : "421301",
 "short_name" : "421301",
 "types" : [ "postal_code" ]
 }
 ],
 "reviews" : [
 {
 "aspects" : [
 {
 "rating" : 0,
 "type" : "overall"
 }
 ],
 "author_name" : "Kunal Korde",
 "author_url" : "https://plus.google.com/108837578005055609416",
 "language" : "en",
 "rating" : 1,
 "text" : "it is very bad to call domino one and only kalyan 
 "time" : 1382351314
 },
 {
 "aspects" : [
 {
 "rating" : 3,
 "type" : "food"
 },
 {
 "rating" : 2,
 "type" : "decor"
 },
 {
 "rating" : 1,
 "type" : "service"
 }
 ],
 "author_name" : "Hits Daiya",
 "author_url" : "https://plus.google.com/101565870698816750539",
 "language" : "en",
 "rating" : 4,
 "text" : "wt a excellent food anybody can get here! I wanna to say that wt a 
 "time" : 1371385367
 },
 {
 "aspects" : [
 {
 "rating" : 1,
 "type" : "overall"
 }
 ],
 "author_name" : "nirmit jallawar",
 "author_url" : "https://plus.google.com/116255076196839398528",
 "language" : "en",
 "rating" : 3,
 "text" : "Good but a bit more of standard is necessary ",
 "time" : 1402139860
 },
 {
 "aspects" : [
 {
 "rating" : 2,
 "type" : "food"
 },
 {
 "rating" : 0,
 "type" : "decor"
 },
 {
 "rating" : 1,
 "type" : "service"
 }
 ],
 "author_name" : "Rutam Mokashi",
 "author_url" : "https://plus.google.com/112151348544733227698",
 "language" : "en",
 "rating" : 3,
 "text" : "best place for pizzas in kalyan...",
 "time" : 1353151680
 },
 {
 "aspects" : [
 {
 "rating" : 1,
 "type" : "food"
 },
 {
 "rating" : 2,
 "type" : "decor"
 },
 {
 "rating" : 2,
 "type" : "service"
 }
 ],
 "author_name" : "A.A Varghese varghese",
 "author_url" : "https://plus.google.com/103110235851606786394",
 "language" : "en",
 "rating" : 4,
 "text" : "nice hotel.",
 "time" : 1375596316
 }
 ],
 "scope" : "GOOGLE",
 "types" : [ "restaurant", "food", "establishment" ],
 "url" : "https://plus.google.com/107013844902194125587/about?hl=en-US",
 "user_ratings_total" : 32,
 "utc_offset" : 330,
 "vicinity" : "Plot No. C 1, Ground Floor, Shop No. 2, 3 & 4, Chikanghar, Kalyan",
 "website" : "http://www.dominos.co.in/"
 },
 "status" : "OK"
 }

and this my code:

 public class Review_activity extends ActivityGroup {
 protected static LocalActivityManager mLocalActivityManager;
 // Alert Dialog Manager
 AlertDialogManager alert = new AlertDialogManager();
 ProgressDialog pDialog;
 JSONObject json = null;
 // Review Listview
 ListView list;
 String reference;
 public static final String TAG_name = "-NA-";
 public static final String TAG_rating = "-NA-";
 public static final String TAG_text = "-NA-";
 public static String reference_value = "reference";
 public static String KEY_REFERENCE = "reference";// id of the place
 private static final String TEL_PREFIX = "tel:";
 ArrayList<HashMap<String, String>> oslist = newArrayList<HashMap<String,String>>();
 // public static String url = "";
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.review);
 oslist = new ArrayList<HashMap<String, String>>();
 // Getting listview
 list = (ListView) findViewById(R.id.list);
 // Getting place reference from the map
 reference = getIntent().getStringExtra("reference");
 Log.d("yogesh", reference);
 String sb ="https://maps.googleapis.com/maps/api/place/details/json?";
 String sb1=sb.concat("&reference="+reference);
 String sb2=sb1.concat("&sensor=true");
 String sb3=sb2.concat("&key=AIzaSyChVcy-8fLkAq5-ZJCuNomF1lIf-Gda7s8");
 String url=sb3;
 Log.d("URL", url);
 new JSONParse().execute(url);
 }
private class JSONParse extends AsyncTask<String, String, JSONObject> {
 @Override
 protected void onPreExecute() {
 super.onPreExecute();
 pDialog = new ProgressDialog(Review_activity.this);
 pDialog.setMessage("Getting Reviews ...");
 pDialog.setIndeterminate(false);
 pDialog.setCancelable(true);
 pDialog.show();
 }
 @Override
 protected JSONObject doInBackground(String... params) {
 JSONParser jParser = new JSONParser();
 // Getting JSON from URL
 String s = params[0];
 Log.d("URL", s);
 JSONObject json = jParser.getJSONFromUrl(s);
 return json;
 }
 @Override
 protected void onPostExecute(JSONObject json) {
 pDialog.dismiss();
 try {
 // Getting JSON Array from URL
 JSONArray jArray = json.getJSONArray("reviews");
 int k;
 k=jArray.length();
 k--;
 String Alength=String.valueOf(k);
 Log.d("Array length", Alength);
 //To get the items from the array
 int j=0;
 for (int i=0;i<=k;i++)
 {
 JSONObject r1 = jArray.getJSONObject(j);
 String aname = r1.getString("author_name");
 String arating = r1.getString("rating");
 String text = r1.getString("text");
 Log.d("review", aname);
 Log.d("review", arating);
 Log.d("review", text);
 j++;
 // Adding value HashMap key => value
 HashMap<String, String> map = new HashMap<String, String>();
 map.put(TAG_name, aname);
 map.put(TAG_rating, arating);
 map.put(TAG_text,text );
 oslist.add(map);
 }
 list=(ListView)findViewById(R.id.list);
 ListAdapter adapter = new SimpleAdapter(Review_activity.this, oslist,
 R.layout.review_item,
 new String[] { TAG_name,TAG_rating, TAG_text }, new int[] {
 R.id.textView2,R.id.textView4, R.id.textView6});
 list.setAdapter(adapter);
 } catch (JSONException e) {
 e.printStackTrace();
 }
 }
 }
 }

Answer 1

i found your json is not a valid json

use check if json is valid or not this to check valid json

i correct it and the valid json is here

{
"result": {
 "address_components": [
 {
 "long_name": "Kalyan",
 "short_name": "Kalyan",
 "types": [
 "locality",
 "political"
 ]
 },
 {
 "long_name": "Maharashtra",
 "short_name": "Maharashtra",
 "types": [
 "administrative_area_level_1",
 "political"
 ]
 },
 {
 "long_name": "India",
 "short_name": "IN",
 "types": [
 "country",
 "political"
 ]
 },
 {
 "long_name": "421301",
 "short_name": "421301",
 "types": [
 "postal_code"
 ]
 }
 ],
 "reviews": [
 {
 "aspects": [
 {
 "rating": 0,
 "type": "overall"
 }
 ],
 "author_name": "Kunal Korde",
 "author_url": "https://plus.google.com/108837578005055609416",
 "language": "en",
 "rating": 1,
 "text": "it is very bad to call domino one and only kalyan",
 "time": 1382351314
 },
 {
 "aspects": [
 {
 "rating": 3,
 "type": "food"
 },
 {
 "rating": 2,
 "type": "decor"
 },
 {
 "rating": 1,
 "type": "service"
 }
 ],
 "author_name": "HitsDaiya",
 "author_url": "https: //plus.google.com/101565870698816750539",
 "language": "en",
 "rating": 4,
 "text": "wtaexcellentfoodanybodycangethere!Iwannatosaythatwta",
 "time": 1371385367
 },
 {
 "aspects": [
 {
 "rating": 1,
 "type": "overall"
 }
 ],
 "author_name": "nirmitjallawar",
 "author_url": "https: //plus.google.com/116255076196839398528",
 "language": "en",
 "rating": 3,
 "text": "Goodbutabitmoreofstandardisnecessary",
 "time": 1402139860
 },
 {
 "aspects": [
 {
 "rating": 2,
 "type": "food"
 },
 {
 "rating": 0,
 "type": "decor"
 },
 {
 "rating": 1,
 "type": "service"
 }
 ],
 "author_name": "RutamMokashi",
 "author_url": "https: //plus.google.com/112151348544733227698",
 "language": "en",
 "rating": 3,
 "text": "bestplaceforpizzasinkalyan...",
 "time": 1353151680
 },
 {
 "aspects": [
 {
 "rating": 1,
 "type": "food"
 },
 {
 "rating": 2,
 "type": "decor"
 },
 {
 "rating": 2,
 "type": "service"
 }
 ],
 "author_name": "A.AVarghesevarghese",
 "author_url": "https: //plus.google.com/103110235851606786394",
 "language": "en",
 "rating": 4,
 "text": "nicehotel.",
 "time": 1375596316
 }
 ],
 "scope": "GOOGLE",
 "types": [
 "restaurant",
 "food",
 "establishment"
 ],
 "url": "https: //plus.google.com/107013844902194125587/about?hl=en-US",
 "user_ratings_total": 32,
 "utc_offset": 330,
 "vicinity": "PlotNo C1 GroundFloor ShopNo 2 3 4 Chikanghar Kalyan",
 "website": "http: //www.dominos.co.in/"
},
"status": "OK"

}

i found your code seems pretty correct ....

the safer side is first print the response json and check if its valid or not....

• Amit Yadav: \@Angad is right JSON is not valid...Parse error on line 48: ... "text": "it is very bad to c -----------------------^ Expecting 'STRING', 'NUMBER', 'NULL', 'TRUE', 'FALSE', '{', '['
• user3930098: how I can print JSON resonse in logcat
• Angad Tiwari: Log.i("json response",json.toString())
• user3930098: This is link to json:maps.googleapis.com/maps/api/place/details/…
• Angad Tiwari: where json is your JsonObject return in doInBackground() method

Answer 2

Issue is you first to get json object for "result" then use that object to find json array for review.

 jsonobject = json.getJsonObject("result");
 resultArray = jsonobject.getJsonArray("review");