org.json.JSONException: End of input at character

Question

when I try to get json that doesn't have object, it works fine. but when I try go get json that has an object it's getting error.

Have you got any idea?

protected Void doInBackground(String... params) {

    String url = "http://example.com/adchara1/";
    JSONArray data = null;

    try {
        JSONObject jsonObject = new JSONObject(result);

        MyArrList = new ArrayList<HashMap<String, Object>>();
        HashMap<String, Object> map;
        data = jsonObject.getJSONArray("countries");
        data = new JSONArray(getJSONUrl(url));
        for (int i = 0; i < data.length(); i++) {
            JSONObject c = data.getJSONObject(i);
            map = new HashMap<String, Object>();

            // Thumbnail Get ImageBitmap To Object
            map.put("photo", (String) c.getString("photo"));
            map.put("ImageThumBitmap",(Bitmap) loadBitmap(c.getString("photo")));

            // Full (for View Popup)
            map.put("frame", (String) c.getString("frame"));

            MyArrList.add(map);
        }

    } catch (JSONException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    return null;
}

error

12-26 11:51:10.352: W/System.err(23284): org.json.JSONException: End of input at character 0 of 
12-26 11:51:10.368: W/System.err(23284):    at org.json.JSONTokener.syntaxError(JSONTokener.java:450)
12-26 11:51:10.368: W/System.err(23284):    at org.json.JSONTokener.nextValue(JSONTokener.java:97)
12-26 11:51:10.368: W/System.err(23284):    at org.json.JSONObject.<init>(JSONObject.java:154)
12-26 11:51:10.368: W/System.err(23284):    at org.json.JSONObject.<init>(JSONObject.java:171)
12-26 11:51:10.376: W/System.err(23284):    at com.example.gridview.MainActivity$DownloadJSONFileAsync.doInBackground(MainActivity.java:180)
12-26 11:51:10.376: W/System.err(23284):    at com.example.gridview.MainActivity$DownloadJSONFileAsync.doInBackground(MainActivity.java:1)
12-26 11:51:10.376: W/System.err(23284):    at android.os.AsyncTask$2.call(AsyncTask.java:287)
12-26 11:51:10.376: W/System.err(23284):    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
12-26 11:51:10.376: W/System.err(23284):    at java.util.concurrent.FutureTask.run(FutureTask.java:137)
12-26 11:51:10.376: W/System.err(23284):    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
12-26 11:51:10.376: W/System.err(23284):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
12-26 11:51:10.376: W/System.err(23284):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
12-26 11:51:10.376: W/System.err(23284):    at java.lang.Thread.run(Thread.java:856)
12-26 11:51:10.399: D/libEGL(23284): loaded /vendor/lib/egl/libEGL_POWERVR_SGX540_120.so
12-26 11:51:10.423: D/libEGL(23284): loaded /vendor/lib/egl/libGLESv1_CM_POWERVR_SGX540_120.so
12-26 11:51:10.430: D/libEGL(23284): loaded /vendor/lib/egl/libGLESv2_POWERVR_SGX540_120.so
12-26 11:51:10.516: D/OpenGLRenderer(23284): Enabling debug mode 0
12-26 11:51:10.735: D/AndroidRuntime(23284): Shutting down VM
12-26 11:51:10.735: W/dalvikvm(23284): threadid=1: thread exiting with uncaught exception (group=0x4158f300)
12-26 11:51:10.735: E/AndroidRuntime(23284): FATAL EXCEPTION: main
12-26 11:51:10.735: E/AndroidRuntime(23284): java.lang.NullPointerException
12-26 11:51:10.735: E/AndroidRuntime(23284):    at com.example.gridview.MainActivity$ImageAdapter.getCount(MainActivity.java:122)
12-26 11:51:10.735: E/AndroidRuntime(23284):    at android.widget.GridView.setAdapter(GridView.java:182)
12-26 11:51:10.735: E/AndroidRuntime(23284):    at com.example.gridview.MainActivity.ShowAllContent(MainActivity.java:91)
12-26 11:51:10.735: E/AndroidRuntime(23284):    at com.example.gridview.MainActivity$DownloadJSONFileAsync.onPostExecute(MainActivity.java:209)
12-26 11:51:10.735: E/AndroidRuntime(23284):    at com.example.gridview.MainActivity$DownloadJSONFileAsync.onPostExecute(MainActivity.java:1)
12-26 11:51:10.735: E/AndroidRuntime(23284):    at android.os.AsyncTask.finish(AsyncTask.java:631)
12-26 11:51:10.735: E/AndroidRuntime(23284):    at android.os.AsyncTask.access$600(AsyncTask.java:177)
12-26 11:51:10.735: E/AndroidRuntime(23284):    at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644)
12-26 11:51:10.735: E/AndroidRuntime(23284):    at android.os.Handler.dispatchMessage(Handler.java:99)
12-26 11:51:10.735: E/AndroidRuntime(23284):    at android.os.Looper.loop(Looper.java:137)
12-26 11:51:10.735: E/AndroidRuntime(23284):    at android.app.ActivityThread.main(ActivityThread.java:4931)
12-26 11:51:10.735: E/AndroidRuntime(23284):    at java.lang.reflect.Method.invokeNative(Native Method)
12-26 11:51:10.735: E/AndroidRuntime(23284):    at java.lang.reflect.Method.invoke(Method.java:511)
12-26 11:51:10.735: E/AndroidRuntime(23284):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791)
12-26 11:51:10.735: E/AndroidRuntime(23284):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:558)
12-26 11:51:10.735: E/AndroidRuntime(23284):    at dalvik.system.NativeStart.main(Native Method)
12-26 11:51:12.509: I/Process(23284): Sending signal. PID: 23284 SIG: 9

Looks like you have NullPointerException in MainActivity line 122. And it clearly indicates the problem is in getCount() — Andro Selva, Dec 26 '12 at 06:41
@AndroSelva see this and tell me http://pastebin.com/mNVGEnD5 — kongkea, Dec 26 '12 at 06:43
Are you sure your JSON is proper format? use jsonviewer.stack.hu and see if it validates. — Sudarshan Bhat, Dec 26 '12 at 06:45
@AndroidKiller did my format isn't good. see this http://pastie.org/5579002 — kongkea, Dec 26 '12 at 06:54
I was getttin the same error because I was using my emulator...I tried on device and JSON parsed correctly — K. Jor, Dec 30 '16 at 10:51

score 12 · Accepted Answer · edited Sep 26 '18 at 14:48

12

Change

 JSONObject jsonObject = new JSONObject(result);

to

result=getJSONUrl(url);  //<< get json string from server
JSONObject jsonObject = new JSONObject(result);

inside doInBackground method of DownloadJSONFileAsync because currently you are not making any post for getting Json data from the server and just trying to parse an empty string to json

edited Sep 26 '18 at 14:48

Abayomi Israel

589
6
14

answered Dec 26 '12 at 06:53

ρяσѕρєя K

132,198
53
198
213

it works but not display anything. and it say can't JSONObject can't be convert to JSONArray – kongkea Dec 26 '12 at 07:00
@kongkea : because you are downloading all images and json and then showing in GridView . solution is change your code using lazy loading to show images from web and just store image Url's in Map and in getView method of Adapter try to download require imagesloadBitmap – ρяσѕρєя K Dec 26 '12 at 07:15
can you give me some simple? or Did you have tutorial about Gridview get image from JSON using AsyncTask and Universal-Image-Loader? – kongkea Jan 09 '13 at 09:28

score 5 · Answer 2 · edited May 23 '17 at 11:54

as you can see from this answer, you are probably getting a blank response.
in general, the org.json.JSONException: End of input at character N of... means that the JSON couldn't be parsed and something is not being done right.

if the problem is that you're getting a blank response, you should make sure you get a response from the server before trying to parse it (like ρяσѕρєя K's answer).

if the problem is a bad JSON, you should try and validate it. JSONLint is a very good place to start.

score 3 · Answer 3 · edited Jun 02 '17 at 12:13

I'm not seeing you assign anything to result after this String result = ""; in here pastebin.com/mNVGEnD5 and if you trying to get json object with this

JSONObject jsonObject = new JSONObject(result);

it'll surely return end of input at character 0 because the string result is empty maybe you can try to replace it with some jsonString you can use this as an example :

{
    "result": "OK",
    "member_id": "32",
    "first_name": "Android",
    "last_name": "JSON",
    "nickname": "HEY",
    "accesskey": "123556332",
    "facebook_id": "0",
    "facebook_token_expire_date": "0000-00-00 00:00:00",
    "facebook_token_expire_date2": "0000000000000",
    "facebook_token_refresh_date": "0000-00-00 00:00:00",
    "facebook_token_key": "null",
    "status_active": 1 
}

i assigned string result=""; and also doing JSONObject jsonObject = new JSONObject(result); and still getting errror — , Dec 27 '14 at 07:42

score 1 · Answer 4 · answered Feb 21 '17 at 14:56

1

Please check PHP File URL in Browser if get the data means you have problem in android side if browser not shows the data it means problem in PHP file.

answered Feb 21 '17 at 14:56

Kishan Rabadiya

35
2

score 1 · Answer 5 · answered Apr 28 '19 at 15:55

1

-please check your all json veriables are properly return only json format or not.

Don’t use "http://localhost" or "http://127.0.0.1". Use "http://10.0.2.2" instead.

answered Apr 28 '19 at 15:55

Krishna Mer

19
1

Paramatma Sharan Upadhyay · Answer 6 · 2015-10-28T06:33:50.923

0

JSONArray array=    new JSONArray(resultdata);
            for(int i=0;i<array.length();i++)
             {                  
                carid.add(jsonObject.getString("Id"));
                carlogo.add(jsonObject.getString("CarImage"));
                carname.add(jsonObject.getString("CarType"));
                prize.add(jsonObject.getString("Price"));
                availibility.add(jsonObject.getString("CarAvailable"));}

edited Oct 28 '15 at 06:33

answered Oct 28 '15 at 06:13

Paramatma Sharan Upadhyay

71
6

u can use this way or u have to make custonclass and can add those all data from the server – Paramatma Sharan Upadhyay Oct 28 '15 at 06:14

score 0 · Answer 7 · answered May 03 '17 at 04:29

0

It is better to use optJSONObject instead of getJSONObject because it will not through exception.

answered May 03 '17 at 04:29

Uma Achanta

3,669
4
22
49

Ryad Amir · Answer 8 · 2020-07-16T16:02:47.760

0

Sometimes the probleme is the URL, if your website forces HTTPS, you have to make sure that you are using an HTTPS URL in your APP.

String url = "https://example.com/adchara1/";

edited Jul 16 '20 at 16:02

answered Jul 16 '20 at 15:56

Ryad Amir

21
4

score -2 · Answer 9 · answered Oct 28 '15 at 06:25

-2

carid = new ArrayList<String>();
        carlogo = new ArrayList<String>();
        carname = new ArrayList<String>();
        prize = new ArrayList<String>();
        availibility = new ArrayList<String>();

        ListView carlist=(ListView)findViewById(R.id.listcardetails);
        adapter=new CustomAdapter(this, carid, carlogo, carname, prize, availibility);
        carlist.setAdapter(adapter);

answered Oct 28 '15 at 06:25

Paramatma Sharan Upadhyay

71
6

How is this related to the question? – Rohit Jan 12 '22 at 09:18

org.json.JSONException: End of input at character

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