Develop Reference

How to remove braces [] from JSON Array data output?

My JSON structure is simple :
"categories": [2],
I am succesfull in getting this output on my Android studio code as :
JSONArray jsonArray = jsonObject.getJSONArray("categories");
Log.e("CAT ID", String.valueOf(jsonArray));
Output is :
E/CAT ID: [2] //and other IDS respectively
My question is how can I remove the braces and just get the Integer values?

You can call get() to get array value.
//If array contains only one value use get(0)
JSONArray jsonArray = jsonObject.getJSONArray("categories");
jsonArray.get(0);
//If Array contains more value use for() loop
for(int i=0;i<jsonArray.length;i++){
jsonArray.get(i);
}

jsut use below code :
String.valueOf(jsonArray)
.replace("[","")
.replace("]","")
or
jsonArray.toString()
.replace("[","")
.replace("]","")

JSON: Treat many objects as array of object

I have a JSON Like this
{ "video":{
"video_3745":{ },
"video_3437":{ },
"video_3471":{ },
"video_4114":{ }
}
}
In which every "video_xxxx" is of the SAME type. Is there a way to treat the "video" field as an array of that type? I need to iterate over all the videos, but the API is not sending them in an array, and I don't know how to model a class to receive this JSON without having to manually specify all the field names...
does GSON or LoganSquare have anything to help me out with this?

Try something like this
JSONObject video= json.getJSONObject("video"); // json is the whole response
Iterator x = video.keys();
JSONArray jsonArray = new JSONArray();
while (x.hasNext()){
String key = (String) x.next();
jsonArray.put(video.get(key));
}

You can't treat them as an array, but with the org.json.JSONObject class you can get the list of keys and iterate over them. I believe in GSON the JsonObject.entrySet method will allow something similar.
https://developer.android.com/reference/org/json/JSONObject.html
https://google.github.io/gson/apidocs/com/google/gson/JsonObject.html

Need help in this Weird JSON

I have a JSON as below
{
"shippingGroupListJson":[
{
"lineId":123,
"shippedTo":{
"country":"US"
},
"cartons":1,
"group":"4",
"shipInscription":{
"municipalInscription":"",
"inscriptionType":"",
"stateInscription":"",
"suframaInscriptionNumber":"",
"inscriptionBranch":"",
"contributorClass":"",
"inscriptionDigit":"",
"inscriptionNumber":""
},
"shipCartonDetails":[
],
"shippedContact":{
"firstName":"Mjjkk",
"email":"nob#gmail.com",
"fax":"--",
"phone":"80-121",
"lastName":"Henry"
},
"mobilityShipStatus":"Not Yet Shipped",
"shipDate":"13 Dec 2014"
},
{
"lineId":0,
"shippedTo":[
],
"cartons":0,
"group":"5",
"shipInscription":[
],
"shipCartonDetails":[
],
"shippedContact":[
],
"mobilityShipStatus":"",
"shipDate":"",
"shipStatus":""
}
]
}
If you see in this above JSON in key "shippedTo", when there is value , I get a JSON Object and when no value is present then i get a Blank JSONArray.
I need to fix this issue. I cannot communicate with the service team to change this as they won't make changes to it. Can any one tell me how can i do the required changes.
I know this is not the rite way, but i need to do something..
I tried using String.replaceAll(oldChar,newChar);

You say you are using GSON, in which case JsonArray and JsonObject are both subclasses of JsonElement.
But you do not say if you are using the DOM or Streaming technique with GSON.
You should show your parsing code, or the class that's being automatically used for the parsing.
In the meantime, based on what you have said, I would define my shippedTo field in my class as an Object. That should parse correctly (if using DOM), and after that you can analyse exactly what you have in that field.
Instead of:
private MyCountryType shippedTo;
Have:
private Object shippedTo;

You could simply check its type at runtime i.e
JSONObject jsPar=new JSONObject(json_data);
JSONArray jsarrPar=js.getJSONArray("shippingGroupListJson");
for(int i=0;i<jsarrPar.size();i++){
JSONObject js= jsarrPar.getJSONObject(i);
if(js.get("shippedTo") instanceof JSONArray){
//Treat it as an array
}
else{
//Treat it as a single json object
}
}
Furthermore if you need it as an JSONObject immaterial of it being a single element then do this to get your customized string
JSONObject jsPar=new JSONObject(json_data);
JSONArray jsarrPar=js.getJSONArray("shippingGroupListJson");
for(int i=0;i<jsarrPar.size();i++){
JSONObject js= jsarrPar.getJSONObject(i);
JSONObject js=new JSONObject(json_data);
if(js.get("shippedTo") instanceof JSONArray){
js.put("shippedTo",new JSONObject()); //purge the original array with this new blank element
}
else{
//Do your normal stuff
}
}
String curmodstring=jsPar.toString();
Hope you get the general idea.

Json object to json array Java (Android)

It's been a while and i'm trying to ignore some frustrating issue i'm having with json things in java, i'm new to this and read alot however, parsing json in javascript or php was alot better (or easier i dunno) but now in java i cannot convert a jsonobject to jsonarray if it doesn't have a parent, cuz it uses .getJsonArray('array)
BUT what IF i have this :
{"49588":"1.4 TB","49589":"1.4 TB MultiAir","49590":"1.4 TB MultiAir TCT","49591":"1.6L MultiJet","49592":"1750 Tbi","49593":"2.0L MultiJet","49594":"2.0L MultiJet TCT"}
i'm not succeeding in anyway to convert it to array
what i want is to convert this JSONObject to JSONArray loop within its items and add them to a Spinner, now that's the first issue, the second question is: if i convert this to JSONArray how can i add the ID, Text to the spinner? just like the HTML Select tag
<option value="0">Item 1</option>
so it's an issue and a question hope someone can find the solution for this jsonarray thing, without modifying the json output from the website, knowing that if i modify and add a parent to this json, the JSONArray will work. but i want to find the solution for that.
Nothing special i have in the code:
Just a AsynTask Response, a log which is showing the json output i put at the beginning of this question
Log.d("response", "res " + response);
// This will work
jsonCarsTrim = new JSONObject(response);
// This won't work
JSONArray jdata = new JSONArray(response);
Thanks !

How about this:
JSONObject json = new JSONObject(yourObject);
Iterator itr = json.keys();
ArrayList<CharSequence> entries = new ArrayList<CharSequence>();
ArrayList<Integer> links = new ArrayList<Integer>();
int i = 0;
while(itr.hasNext()) {
String key = itr.next().toString();
links.add(i,Integer.parseInt(key));
entries.add(i, (CharSequence) json.getString(key)); //for example
i++;
}
//this is the activity
entriesAdapter = new ArrayAdapter<CharSequence>(this,
R.layout.support_simple_spinner_dropdown_item, entries);
//spinner is the spinner the data is added too
spinner.setAdapter(entriesAdapter);
this should work (works for me), you may have to modify the code.
The way shown, i am adding all entries of the json object into a Spinner, where my json key is the index value and the linked String value of the json object will be shown as Spinner entry (title) in my activity.
Now when an Item is selected, fetch the SelectedItemPosition and you can look it up in the "links" array list, to get the real value.

I'm not sure if this is thing you want but give it a try. There is tutorial to convert the Json to Map. After you convert it, you can iterate through the map.
http://www.mkyong.com/java/how-to-convert-java-map-to-from-json-jackson/

What you have is a JSON object type, not an array type. To iterate you can get the Iterator from the keys method.

Retrieving string from an array within a json object

I'll keep it short. I want to obtain the string value from "token". But from what I can see there is a "data" array within my json object. How do I retrieve the array and, specifically, the token string from this array?
{
"response":true,
"state":8,"data":{
"token":"$2a$08$oeH79FjMV6ZQTO.9qqfToujNBbst420Xx7o9jJdFgbJsJijtEpX\/O",
"numbers":[{
"number":"4581102282",
"enabled":"0",
"custid":"1528511113",
"route":"rock",
"clir":"2",
"mob":"1",
"clip":"",
"mbx":"0",
"trunk":"2",
"valid_from":"2011-09-07",
"valid_to":"2011-10-05"
}]
}
}

Simply use
JSONObject jsonObj=new JSONObject(response);
JSONObject jsonData=jsonObj.getJSONObject("data");
String token=jsonData.getString("token");