Android JSONArray Exception

Question

I have a JSON like this :

{
- 0: {
 "title": "Title1",
 "content": "test"
},
 - 1: {
 "title": "Title2",
 "content": "test2"
}
}

So i want to recover it in my application, and i have an exception with this line :

JSONArray jArray = new JSONArray(result);

I checked that "result" contains my JSON, and it's the case.

When i see the error in the logcat i just see values of my JSON.... i have something like that :

org.json.JSONException and values of my JSON

Could someone help me ?

• Harshal Benake: can you add complete logcat exception,if possible.

Answer 1

{ means Object by means if json data starts with a { than it is an object

[ means array by means if json data starts with a [ than it is an array

use

JSONObject jObject = new JSONObject(result);

instead of

JSONArray jArray = new JSONArray(result);

for a simple tutorial and to learn visit

http://www.androidhive.info/2012/01/android-json-parsing-tutorial/

• deveLost: Ok, i understood but i have a problem because me, i haven't a json object with name, i have just number, not "contacts" like your example. So how can i do a while on jObject ?
• Jitesh Upadhyay: Please visit the documentation, you can iterate over the data and findout. you can obtain an object based on a particular key.

Answer 2

The JSON you posted is not a JSONArray but a JSONObject so you have to change from

JSONArray jArray = new JSONArray(result);

to

JSONObject jObject = new JSONObject(result);

• deveLost: Oh, ok. But now, how can i do to do a "while" on jObject ?
• Blackbelt: you still have the possibility to get an iterator with all the keys, do a while on that iterator and retrieve every object through optObject(). I'll strongly suggest you to give a look to the documentation

Answer 3

You can get an easy to understand example for encoding and parsing json: Android JSON Tutorial: Create and Parse JSON data

and

JSON in Android - Tutorial