Develop Reference

Parse Json from Json array in Android

I have the following JSON and I would like to parse all of the "vcsapat" and "hcsapat" and all of the datas from the first rows.
Json is here:Link
I tried with the following code, but I only have exceptions
JSONArray JSonAdatok = null;
JSonAdatok = jObject.getJSONArray("vcsapat");
for (int i = 0; i < JSonAdatok.length(); i++) {
JSONObject jo = null;
try {
jo = JSonAdatok.getJSONObject(i);
System.out.print("\n"+jo);
JSONObject kezdojatekosok = jo.getJSONObject("kezdo");
System.out.print("\n"+kezdojatekosok);
for (int j = 0; j < kezdojatekosok.length(); j++) {
JSONObject egyjjson = kezdojatekosok;
And the Exception is the following:
at org.json.JSON.typeMismatch(JSON.java:100)
org.json.JSONObject.getJSONArray(JSONObject.java:588)

Your JSON contains first an Object which starts with "{" so your whole JSON string represents an JSONObject. Then after, get inside it the object "hforma" then the JSONArray of forma, and then you can iterate on them to get on each the hcsapat and vcsapat attributes as strings.
Something like this:
JSONObject complete = new JSONObject(WHOLE_JSON_AS_STRING);
JSONObject hforma = complete.getJSONObject("hforma");
JSONArray forma = hforma.getJSONArray("forma");
for (int i = 0; i < forma.length(); i++) {
JSONObject formaData = forma.getJSONObject(i);
String hcsapat = formaData.getString("hcsapat");
String vcsapat = formaData.getString("vcsapat");
}
I did not test that code, it is just an example that follows the structure of your JSON.

json string to java object to populate spinner

So i have a Json string that i have retrieved from my PHP script on my MySQL server
{"Clientid":[24,26,27],"companyname":["chelsea","Microsoft","IBM"]}
and i have been trying to push this into a java objects in-order to populate a spinner at the moment the spinner on each line shows "chelsea","Microsoft","IBM" but i would like to show each company on a separate line so the user can select which company
current code
String response = stringBuilder.toString();
Log.d("response", response);
JSONObject jsonResponse = new JSONObject(response);
Log.d("response", jsonResponse.toString());
responseStreamReader.close();
Log.d("length", Integer.toString(jsonResponse.length()));
if (jsonResponse.length() == 0) {
returnedClient = null;
} else {
List<Client> myClients;
myClients = new ArrayList<Client>();
for (int i = 0; i < jsonResponse.length(); i++) {
Client client = new Client();
client.clientid = jsonResponse.getString("Clientid");
client.companyname = jsonResponse.getString("companyname");
myClients.add(client);
}
returnedClient = myClients;
}
} catch (Exception e) {
e.printStackTrace();
}
//Log.d("returnedUser", returnedUser.userpassword);
return returnedClient;
current code is obviously the wrong code so i have been looking at Gson and Jackson and volley and getting in a mess so i have been looking at the below but cant get it right to fit the Json string so wondered if you could help please or advise a better solution?
JSONArray jarray = jsonResponse.getJSONArray("companyname");
ArrayList<String> xyz= new ArrayList<String>();
for(int i = 0; i < jarray.length(); i++){
JSONArray timeArray =jarray.getJSONObject(i).getJSONArray("companyname");
for(int j = 0; j < timeArray .length(); j++){
xyz.add(timeArray .getString(j));
Log.d("get value",timeArray .getString(j));
Is there something im missing with the parser as doesnt matter what i change it seems to not like anything i do, it says the json cant be an object then it cant be an array, i assume the json is an object then an array but at the mormnt i just get errors :(
try {
List<Client> returnedClient = null;
// JSONObject json = new JSONObject(content);
JSONArray json1 = new JSONArray(content);
//JSONObject dataObject1 = json.getJSONObject("Clientid");
//JSONObject dataObject2 = json.getJSONObject("companyname");
// JSONArray items1 = json.getJSONArray("Clientid");
// JSONObject items2 = json.getJSONObject("companyname");
// JSONArray items1 = json.getJSONArray("Clientid");
JSONArray items2 = json1.getJSONArray(0);
for (int i = 0; i < items2.length(); i++) {
// JSONArray clientObject1 = items1.getJSONArray(i);
// JSONObject clientObject2 = items2.getJSONObject(i);
JSONArray clientObject3 = items2.getJSONArray(i);
// Client client = new Client(clientObject2);
Log.d("response",clientObject3.toString());
// returnedClient.add(client);
}

O silly me the is was further up the tree as i was using the code below at the top of the page before i even started the parse, shame it took me to re write my sql before i noticed :(
JSONObject jsonResponse = new JSONObject(response);

new to json parsing - how to get an array within an array

from the following link , I need to get the value stored in "media".
Here is my code:
Content = Content.replace("jsonFlickrFeed(", "");
Content = Content.replace("})", "}");
jsonResponse = new JSONObject(Content);
JSONArray jsonMainNode = jsonResponse.optJSONArray("items"); // this works great!
But I can not access past "items"

You will have to loop through the JSON like this:
...
JSONArray jsonMainNode = jsonResponse.optJSONArray("items");
for (int i=0; i<jsonMainNode.length(); i++) {
String media = jsonMainNode.getJSONObject(i).getString("media");
}
This will loop through the images and return the value(s) in media.
In your case it should be something like this:
..
JSONArray jsonMainNode = jsonResponse.optJSONArray("items");
for (int i=0; i<jsonMainNode.length(); i++) {
JSONObject finalNode = jsonMainNode.getJSONObject(i);
JSONArray finalArray = finalNode.optJSONArray("media");
for (int j=0; j<finalArray.length(); j++) {
String m = finalArray.getJSONObject(j).getString("m");
}
}
...because there is another node inside the media node, called m.

Here is an example getting the tags string for each item in the JSONArray that you have:
for (int i = 0; i < jsonMainNode.length(); i++){
JSONObject jsonObject = jsonMainNode.getJSONObject(i);
String tags = jsonObject.getString("tags");
}
This will iterate through all JSONObjects that are in the array, and extract the tags field from each object.

JSONArray jsonMainNode = jsonResponse.optJSONArray("items"); // this works great!
for (int i = 0; i < jsonMainNode.length(); i++) {
JSONObject item = (JSONObject) jsonMainNode.get(i);
JSONObject media = item.getJSONObject("media");
String valueMedia = media.getString("m");
Log.d("TAG", valueMedia);
}

Get JSON Array into strings.

I have a webservice which returns a JSON array in this format:
[{"imageid":"3","userid":"1","imagepath":"SLDFJNDSKJFN","filterid":"1","dateadded":"2014-05-06 21:20:18.920257","public":"t"},
{"imageid":"4","userid":"1","imagepath":"dsfkjsdkfjnkjdfsn","filterid":"1","dateadded":"2014-05-06 21:43:37.642748","public":"t"}]
I need to get all the attributes seperately? How would I do this?
I know how to do it with JSONObject if there is just 1 thing being returned, but how does it work when multiple items are returned?
Thanks

try {
JSONArray jArray = new JSONArray(jsonString);
String s = new String();
for (int i = 0; i < jArray.length(); i++) {
s = jArray.getJSONObject(i).getString("imageid").toString();
s = jArray.getJSONObject(i).getString("userid").toString();
}
} catch (JSONException je) {
}

Create an Object class with all variables, create a List for this Object, add all objects in your JSONArray to the list, use the one you need.
List<YourObject> objList = new ArrayList<YourObject>();
JSONArray a = new JSONArray(response);
int size = a.length();
for (int i=0 ; i<size ; i++){
JSONObject aa = a.getJSONObject(i);
String id = aa.getString("imageid");
String userid = aa.getString("userid");
String imagepath = aa.getString("imagepath");
String filterid = aa.getString("filterid");
String dateadded = aa.getString("dateadded");
String publicText = aa.getString("public");
YourObject obj = new YourObject(id,userid,imagepath,filterid,dateadded,publicText);
objList.add(obj);
}

So what you are having here is some JSON objects inside a JSON array.
What you want to do is this:
JSONArray array = ...;
for (int i = 0; i < array.length(); i++) {
JSONObject o = array.getJSONObject(i);
// Extract whatever you want from the JSON object.
}
I hope it helped.

You can use JSONArray to parse array of JSON response.
private void parseJsonArray(String response) {
try {
JSONArray array = new JSONArray(response);
for(int i=0;i<array.length();i++){
JSONObject jsonObject = array.getJSONObject(i);
String ImageId = jsonObject.getString("imageid");
Log.v("JSON Parser", "ImageId: "+ImageId);
}
} catch (Exception e) {
e.printStackTrace();
}
}

Processing a JSON string into a Java Array

I have this array in json code.
$info=array();
while($row = mysql_fetch_array($result,MYSQL_ASSOC)){
array_push($info,$row);
}
$info;
$result_final->lugares_cercanos = $info;
Print this:
{"logstatus":"1","lugares_cercanos":[{"nombre":"Rio Amazonas","distancia":"5119.000"}{"nombre":"Swissotel Quito","distancia":"5823.000"}{"nombre":"Laguna de Yaguarcocha","distancia":"71797.000"}]}
Now, the problem is, How can I put the fields of "lugares_cercanos" into java ArrayList??
I try with this code:
{
JSONArray jdata=post.getserverdata(postparameters2send, URL_connect);
if (jdata!=null && jdata.length() > 0){
JSONObject json_data;
ArrayList<NameValuePair> lugares = new ArrayList<NameValuePair>();
json_data = jdata.getJSONObject(0);
logstatus=json_data.getInt("logstatus");
lugaresCercanos=json_data.getJSONArray("lugares_cercanos");
for (int i = 0; i < lugaresCercanos.length(); ++i) {
JSONObject rec = lugaresCercanos.getJSONObject(i);
String name = rec.getString("nombre");
String dist = rec.getString("distancia");
lugares.add(new BasicNameValuePair(name,dist));
}
}
}

Try this:
JSONObject j = jdata.getJSONObject("obj");
JSONArray jArray = j.getJSONArray("lugares_cercanos");
int len = jArray .length();
for(int i=0; i <len; i++){
String nombre = jArray .getJSONObject(i).optString("nombre");
---------
}

The top level structure (i.e. the JSON string you have posted) is not an array but an object.
I don't know what your post.getserverdata method does, if there is a version that can return a JSONObject you could use:
JSONObject jdata=post.getserverdataobject(postparameters2send, URL_connect);
logstatus=jdata.getInt("logstatus");
lugaresCercanos=jdata.getJSONArray("lugares_cercanos");
...

show this error:
Error parsing data org.json.JSONException: Value {"lugares_cercanos":[{"nombre":"Laguna de Yaguarcocha","distancia":"8686205.000"},{"nombre":"Swissotel Quito","distancia":"8728811.000"},{"nombre":"Rio Amazonas","distancia":"8729333.000"}],"logstatus":"1"} of type org.json.JSONObject cannot be converted to JSONArray