java - Json array inside array retrieve values Android

Question

i m trying to get values from JSONArray inside array, i m able to retrieve whole JSON values into JSONArray successfully but not able to retrieve values inside JSONArray. When i convert JSONArray to JSONObject to get values stored inside JSONArray. It gives error: org.json.JSONException: No value for "banner"

Here is JSON code, i verified JSON code with jsonlint.com and it showed JSON is Validate,

[
	{"code":"banner","moduletitle":0,
	  "banner":
		[
			{"image":"http://imageurl"},
			{"image":"http://imageurl"},
			{"image":"http://imageurl"}
		]
		
	}
]

Answer 1

Here:

JSONObject jo = new JSONObject();
JSONArray ja = new JSONArray();
// populate the array
jo.put("arrayName", jsonObj);

Because parsing jsonObj JSONArray so no need to create new JSONArray and JSONObject to extract it from jsonObj. remove all above three lines.

banner JSONArray is inside JSONObject which is contained by jsonObj JSONArray, get it as:

   JSONObject jsonObject=jsonObj.optJSONObject(0);
    JSONArray subArray = jsonObject.getJSONArray("banner");

   // get code key from `jsonObject`
   String strCode=jsonObject.optString("code");

   // get all images urls from `subArray`
    for(int index=0;index<subArray.length();index++){
      JSONObject imgJSONObject=subArray.optJSONObject(index);
      // get image urls
      String strImgURL=imgJSONObject.optString("image");

     } 

Also, if jsonObj JSONArray contains multiple JSONObject's then use for-loop to iterate it.