Home/ Questions/Q 8078491
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-05T15:48:54+00:00

I have two URLs. https://wimp.supremosolutions.com/api/v1/spot/?format=json https://wimp.supremosolutions.com/api/v1/spot/?format=json&latitude=45.200375&longitude=9.992465000000001 If I run the first one through my

  • 0

I have two URLs.

  1. https://wimp.supremosolutions.com/api/v1/spot/?format=json
  2. https://wimp.supremosolutions.com/api/v1/spot/?format=json&latitude=45.200375&longitude=9.992465000000001

If I run the first one through my android activity then the results load into my List with no problem.
But if I run the second URL then I land up getting this error.

05-30 16:20:30.473: ERROR/JSON Parser(1740): Error parsing data org.json.JSONException: Value Invalid of type java.lang.String cannot be converted to JSONObject
05-30 16:20:30.633: ERROR/AndroidRuntime(1740): FATAL EXCEPTION: AsyncTask #1
        java.lang.RuntimeException: An error occured while executing doInBackground()
        at android.os.AsyncTask$3.done(AsyncTask.java:278)
        at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
        at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
        at java.util.concurrent.FutureTask.run(FutureTask.java:137)
        at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
        at java.lang.Thread.run(Thread.java:856)
        Caused by: java.lang.NullPointerException
        at com.supremosolutions.wimp.AroundMeParking$LoadInbox.doInBackground(AroundMeParking.java:162)
        at com.supremosolutions.wimp.AroundMeParking$LoadInbox.doInBackground(AroundMeParking.java:138)
        at android.os.AsyncTask$2.call(AsyncTask.java:264)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
        ... 5 more

I have run both URLs through json validators like http://jsonlint.com/ and both validate.

The code seems to break on the jsonParser.makeHttpRequest:

protected String doInBackground(String... args) {
    // Building Parameters
    List<NameValuePair> params = new ArrayList<NameValuePair>();
    JSONObject json = jsonParser.makeHttpRequest(callableUrl, "GET", params);
    // Check your log cat for JSON response
    Log.d("JSON FOR LOGCAT: ", json.toString());

Sometimes I can see the JSON FOR LOGCAT string in Logcat and it looks like this http://pastebin.com/6CWBAyys (still crashes with that exception though)but sometimes the string doesn’t even make it into logcat.

What is the problem here and how can I fix it?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    The jsonParser class that I had appends parameters. I was already adding in the base url + the parameters and so the url being sent was invalid.
    Instead of sending my URL through like this https://wimp.supremosolutions.com/api/v1/spot/?format=json&latitude=45.200375&longitude=9.992465000000001

    I have to send it like https://wimp.supremosolutions.com/api/v1/spot/ but then add NameValuePair parameters to pass into my jsonParser class.

            // Building Parameters
        List<NameValuePair> params = new ArrayList<NameValuePair>();
        params.add(new BasicNameValuePair("format", "json"));
        params.add(new BasicNameValuePair("format", "json"));
        params.add(new BasicNameValuePair("format", "json"));
        JSONObject json = jsonParser.makeHttpRequest(URL, "GET", params);

    As Ken Y-N and Alex mentioned this error is caused by an invalid url. If you get this DOUBLE check how you are creating your URL and see exactly what is being sent

    • 0