CODEWITHSUNDEEP
javaandroidjson
user1240287
user1240287

Reputation: 1

Android: JSONObject cannot be converted to JSONArray

I want to get data from php file to Android using JSON. This is my code:

....
HttpEntity e = r.getEntity();
String data = EntityUtils.toString(e);
JSONArray timeline = new JSONArray(data);
JSONObject last = timeline.getJSONObject(0);
return last;

When I debug the program there is JSONException on this line: 

JSONObject last = timeline.getJSONObject(0);

Data is {"a":1,"b":2,"c":3,"d":4,"e":5} and the Exception is:

org.json.JSONException: Value {"d":4,"e":5,"b":2,"c":3,"a":1} of type org.json.JSONObject cannot be converted to JSONArray

Upvotes: 0

Views: 5200

Answers (4)

user1381420RKS
user1381420RKS

Reputation: 149

Your json response is in Object form, not in Array form.So you have to simply parse your json object. Suppose "data" is the JSONObject tag in response. Following is the way of Parsing:

           HttpEntity e = r.getEntity();
           String result = EntityUtils.toString(e);
           JSONObject response=new JSOBObject(result);
           JSONOBject Data=response.getJSONObject("data");
           int a=Data.getInt("a");
           int b=Data.getInt("b");
           int c=Data.getInt("c");
           int d=Data.getInt("d");
           int e=Data.getInt("e");

Thanks.

Upvotes: 0

lomec
lomec

Reputation: 1354

JSONArray timeline = new JSONArray(data);
// change JSONArray to JSONObject

JSONObject timeline = new JSONObject(data);// Like This

Your JSON data is not an array.

Upvotes: 0

Michael Laffargue
Michael Laffargue

Reputation: 10294

In Json arrays are described using []. There you define an object with five attributes.

Upvotes: 1

thkala
thkala

Reputation: 86333

The exception message is quite explicit and a look at the JSON syntax diagrams should be illustrative. The JSON string that your code received is:

{"a":1,"b":2,"c":3,"d":4,"e":5}

This string represents an object, not an array. An example of an array would be this:

[1, 2, 3, 4, 5]

or even this:

[{"a":1,"b":2,"c":3,"d":4,"e":5}]

Note that starting and closing brackets.

I think that you will find that the exception location is slightly misleading. I don't know if it is a result of some sort of lazy initialization or something else, but I believe that the cause is actually this line:

JSONArray timeline = new JSONArray(data);

Since the data string represents a JSON object and not an array, this operation is clearly impossible.

Upvotes: 2

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