Parse JSON Array

Question

My JSON is something like this:

[{
 "myviews":[{
 "2011-05-12_2011年05月14日":{
 "name":"thiswk",
 "data":[[12,
 2403
 ],
 [13,
 2082
 ],
 [14,
 5823
 ]
 ]
 }
 },
 {
 "2011-06-05_2011年06月7日":{
 "name":"lastwk",
 "data":[[5,
 1279
 ],
 [6,
 6685
 ],
 [7,
 2163
 ]
 ]
 }
 }
 ]
 }
]

---

 JSONObject jo = new JSONObject(jsonString);
 JSONArray ja;
 jo = jo.getJSONObject("2011-05-12_2011年05月14日");
 ja = jo.getJSONArray("data");
 int resultCount = ja.length();
 for (int i = 0; i < resultCount; i++)
 {
 JSONObject resultObject = ja.getJSONObject(i);
 resultObject.getJSONArray("12");
 System.out.println("--");
 }

I am unable to read the values under the "data" array. Get this error

Exception in thread "main" org.json.JSONException: A JSONObject text must begin with '{' at character 1

• Pit: Did you try removing the [ at the beginning and the ] in the end? Like the error says, JSONObject requires the first character to be {!
• duffymo: Why do you not believe the error message?

Answer 1

You're trying to create a JSONObject based on a string that doesn't represent an object, but an array containing one object.

To get the contained object, try

JSONArray inputArray = new JSONArray(jsonString);
JSONObject jo = inputArray.getJSONObject(0);

I think some of your later work is wrong as well, but perhaps this will get you started.

Answer 2

data appears to be an array of arrays. Perhaps you need to call ja.getJSONArray(i)?