android how to convert json array to string array

Question

I have an app where I fetch data from server(json) in the form of array & by using the index i used in my app, like below.

JSONObject topobj = new JSONObject(page);
JSONObject innerobj = topobj.getJSONObject("restarutant");
JSONArray phone = innerobj.getJSONArray("phone");
textViewPhone.setText("Phone: " + phone.get(0).toString() + " ,"
                    + phone.get(1).toString());

for small size array I can get like this. But when array contains 'n' no of elements and dynamically i have to use this, at that time it required to convert into String Array. Can anybody tell me how I convert the json array to String array ? Thank you

you should accept correct answers to your questions if you've found them to be useful(See there is a tick there)and also use upvotes. It will help you get more answers. — Rishabh
– Rishabh, Commented Jun 15, 2011 at 11:41
possible duplicate of Convert Json Array to normal Java Array — Suma
– Suma, Commented Jun 5, 2013 at 11:36
ArrayList is not a String[] , title wont fulfill your explanation of question AND the accepted answer it for ArrayList , NOT String[] ; — Milad
– Milad, Commented Apr 3, 2015 at 22:22

Community · Accepted Answer · 2017-05-23 12:00:28Z

22

This should help you.

Edit:

Maybe this is what you need:

ArrayList<String> stringArray = new ArrayList<String>();
JSONArray jsonArray = new JSONArray();
for(int i = 0, count = jsonArray.length(); i< count; i++)
{
    try {
        JSONObject jsonObject = jsonArray.getJSONObject(i);
        stringArray.add(jsonObject.toString());
    }
    catch (JSONException e) {
        e.printStackTrace();
    }
}

edited May 23, 2017 at 12:00

CommunityBot

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answered Jun 15, 2011 at 10:24

Pasha

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2 Comments

Jyosna Over a year ago

Hiii,my question is different. Its for coverting objecty to string then string to json array. But I asked to convert json array to string array

Milad Over a year ago

The title is about String[] , but the accepted answer gives a ArrayList<String> , Which are totally different however

Ryan M · Accepted Answer · 2020-03-23 00:29:54Z

6

Assume that you already have JSONArray jsonArray:

String[] stringArray = new stringArray[jsonArray.length()];
for(int i = 0, count = jsonArray.length(); i< count; i++)
{
    try {
        String jsonString = jsonArray.getString(i);
        stringArray[i] = jsonString.toString();
    }
    catch (JSONException e) {
        e.printStackTrace();
    }
}

edited Mar 23, 2020 at 0:29

Ryan M♦

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answered Jul 16, 2014 at 9:18

Mladen Rakonjac

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1 Comment

oOEric Over a year ago

new stringArray[jsonArray.length()]; --- should be ---> new String[jsonArray.length()];

Andy · Accepted Answer · 2012-10-16 18:01:37Z

5

This I think is what you searching for

ArrayList<String> list = new ArrayList<String>();     
JSONArray jsonArray = (JSONArray)jsonObject; 
if (jsonArray != null) { 
   for (int i=0;i<jsonArray.length();i++){ 
    list.add(jsonArray.get(i).toString()); 
}

edited Oct 16, 2012 at 18:01

Andy

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answered Jun 15, 2011 at 11:38

Rishabh

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Comments

Asim Ihsan · Accepted Answer · 2011-06-15 11:53:12Z

3

I just did this yesterday! If you're willing to use a 3rd party library then you can use Google GSON, with the additional benefit of having more concise code.

String json = jsonArray.toString();
Type collectionType = new TypeToken<Collection<String>>(){}.getType();
Collection<String> strings = gson.fromJson(json, collectionType);

for (String element : strings)
{
    Log.d("TAG", "I'm doing stuff with: " + element);
}

You can find more examples in the user guide.

answered Jun 15, 2011 at 11:53

Asim Ihsan

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Comments

sandrstar · Accepted Answer · 2020-05-19 10:48:17Z

0

Another elegant kotlin way:

val list = jsonArray.map { jsonElement -> jsonElement.toString() }

And just convert to array if needed

answered May 19, 2020 at 10:48

sandrstar

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Comments

UdaraWanasinghe · Accepted Answer · 2021-11-12 18:00:31Z

0

If you are using org.json package, Here is the kotlin way of converting json array to string array.

// get json array
val jsonArray = json.getJSONArray("field")
// convert to string array
val stringArray = Array(jsonArray.length()) { jsonArray.getString(it) }

answered Nov 12, 2021 at 18:00

UdaraWanasinghe

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