json String in android

Question

I have a problem while creating jsonStringer in android. My problem is I have to post values to server using post method.So for that I have to send an array. { "name":"asdf","age":"42","HaveFiles":["abcfile","bedFile","cefFile"]} .

So how can I create a json array for haveFiles? And I don't know the no of files it may varies. So I am creating a string builder and appending the values to that. when I print the jsonString the stringbuilder show that instead of " it shows \". But when I print the string builder it looks ["abcFile"] like this. but in jsonStringer it prints ["\""abcFile\""]. How I can resolve this issue?

Have you checked the documentation regarding JSONArray? developer.android.com/reference/org/json/JSONArray.html — Didac Perez Parera
– Didac Perez Parera, Commented Dec 3, 2013 at 9:48

Viswanath Lekshmanan · Accepted Answer · 2013-12-03 09:47:08Z

1

Use this to create json object and pass the json object

   try {
        JSONObject jObj = new JSONObject(YourString);
    } catch (JSONException e) {
        Log.e("JSON Parser", "Error parsing data " + e.toString());
    }

If you want jsonArray then

jobj.getJSONArray(TAG_NAME);

answered Dec 3, 2013 at 9:47

Viswanath Lekshmanan

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Robin · Accepted Answer · 2013-12-03 10:23:10Z

0

It is really simple, you can use GSON library to do it.

The usage is something like:

Gson gson = new Gson();
String jsonStr = gson.toJson(yourObj);
YourObjType yourObj2 = gson.fromJson(jsonStr, YourObjType.class);

Regarding to your situation, you can do:

Gson gson = new Gson();
String[] ss = new String[] {"abcFile", "defFile", "ghiFile"};
String jsonStr = gson.toJson(ss);

And the result of jsonStr is:

["abcFile, defFile, ghiFile"]

edited Dec 3, 2013 at 10:23

answered Dec 3, 2013 at 9:43

Robin

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10 Comments

Didac Perez Parera Over a year ago

What...? GSON is not for this purpose.

user484848 Over a year ago

have to use json only.Otherwise can you send me an example

Unii Over a year ago

. If you are sending more information to server you library:jackson or gson

Robin Over a year ago

@Srikanth I am a little bit confused here, you are talking about you have problems when converting objects to json. But I have tried with GSON it is pretty good. What do you mean by "json only"? GSON is the best json serializer/deserializer on Android.

user484848 Over a year ago

could you please create a sample for my object?

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