Android String cannot be converted to JSONObject(A different Error)

Question

I am trying to parse JSON from web service. But i get "String could not be converted to Json Object" error.

My json: {"encoding":"UTF-8","yorumlar":[["dogukan","deneme yorumu"],["Burak","yorum"]]} I get this string like below;

HttpClient client = new DefaultHttpClient();
            HttpUriRequest request = new HttpGet(url);
            HttpResponse response = null;
            try
            {
                response = client.execute(request);
                String jsonString = StreamUtils.convertToString(response.getEntity().getContent());
                JSONObject json = new JSONObject(jsonString);
                .
                .
                .

When i got this string from web service like above, i get this error but when i do that:

JsonObject object = new JsonObject("{\"encoding\":\"UTF-8\",\"yorumlar\":[[\"dogukan\",\"deneme yorumu\"],[\"Burak\",\"yorum\"]]}")

i don't get this error. So, the strings are the same and json format is ok. What is the problem?

are you sure you are getting the correct response? have you logged it? — SMR, May 30 '14 at 07:35
Hey, Please print log for response and put here for clerify doubt. M here to help you. — Brijesh Patel, May 30 '14 at 07:40
Have you specified the **Content-Type** to **application/json** in your WS's answer ? — Quentin Klein, May 30 '14 at 07:41
Yes, i debugged and copied the value of "jsonString". It was the same string. There is not any differences. @QuentinKlein Yes Content-Type is application/json — serefakyuz, May 30 '14 at 07:48
Could there be some extra spaces in your string? Check this one: http://stackoverflow.com/questions/10267910/jsonexception-value-of-type-java-lang-string-cannot-be-converted-to-jsonobject — Raghu, May 30 '14 at 08:33
check the value for variable jsonString also. Can try a normal convertToString with charset utf-8 [InputStreamReader(inputStream, "UTF-8")] — Pararth, May 30 '14 at 08:33
I can get json from youtube gdata in same method. There is no problem while parsing youtube data. — serefakyuz, May 30 '14 at 08:41
might be some character difference...compare the exact strings, encoding? — Pararth, May 30 '14 at 08:49
I am going to be crazy. I have no idea what is the problem. I have tried changing encoding and the other ways but still gives error. Strings are the same, i can get json from youtube response in the same method. — serefakyuz, May 30 '14 at 08:56
check all brackets, escape chars, post a logcat read of the time this happens — Pararth, May 30 '14 at 11:04

score 0 · Accepted Answer · answered Jun 02 '14 at 10:49

I solved the problem, the json string starts with these characters "ï»¿ï»¿". But these characters does not appear in debug mode. I created a java project. And i got the json string from server. I saw these characters in debug mode. Java project gave me more details about the converting error.

if you try to get the values of these in debug mode:

jsonString.toCharArray()[0] and jsonString.toCharArray()[1]

you will see the values as "", not "{". It's not space but does not appear. and "{" character located in 2. index.

We have solved the problem on server side. I guess that was an page encoding problem.

Android String cannot be converted to JSONObject(A different Error)

1 Answers1