Put ArrayList into param JsonObject

Question

i must do i request with Volley Framework. This is a POST request with JSONObject.

I must pass one string and one JSONArray..but how i can?

I start with this:

 private String mUrl;
 private ArrayList<String> mUrlDove;
 HashMap<String, String> params = new HashMap<String, String>();
 params.put("url", mUrl);
 params.put("urlDove", mUrlDove); ---> Wrong because mUrlDove is not a String
 mUrl = app.getInstance().getmUrlRestWS() + getString(R.string.path);
 JsonObjectRequest mRequest = new JsonObjectRequest(
 mUrl, new JSONObject(params),
 createMyReqSuccessListener(),
 createMyReqErrorListener()) {
 @Override
 public Map<String, String> getHeaders() throws AuthFailureError {
 return app.getInstance().createBasicAuthHeader();
 }
 };

If i try with Browser i must set this:

{
 "url": "www.secret.com",
 "urlDove" : [ "www.google.com","www.yahoo.com"]
}

Answer 1

you need to make a JSON Array first and then store that

private String mUrl;
private ArrayList<String> mUrlDove;
HashMap<String, String> params = new HashMap<String, String>();
 params.put("url", mUrl);
 JSONArray jsArray = new JSONArray(mUrlDove);
 params.put("urlDove", jsArray.toString()); 
 mUrl = app.getInstance().getmUrlRestWS() + getString(R.string.path);
 JsonObjectRequest mRequest = new JsonObjectRequest(
 mUrl, new JSONObject(params),
 createMyReqSuccessListener(),
 createMyReqErrorListener()) {
 @Override
 public Map<String, String> getHeaders() throws AuthFailureError {
 return app.getInstance().createBasicAuthHeader();
 }
 };

• JohnDotOwl: com.android.volley.ParseError: org.json.JSONException: Value Created of type java.lang.String cannot be converted to JSONObject
• chris: i need help here stackoverflow.com/questions/46422727/…

Answer 2

try passing JSONObject instead of hashmap

JSONObject params = new JSONObject();
params.put("url", "www.secret.com");
JSONArray urlDove = new JSONArray();
urlDove.put("www.google.com");
urlDove.put("www.yahoo.com");
params.put("urlDove", urlDove);
JsonObjectRequest mRequest = new JsonObjectRequest(
 mUrl, params,
 createMyReqSuccessListener(),
 createMyReqErrorListener()) {
 @Override
 public Map<String, String> getHeaders() throws AuthFailureError {
 return app.getInstance().createBasicAuthHeader();
 }
 };

for reference in parsing json https://stackoverflow.com/a/17810270/4810752

Answer 3

JSONObject can take in Java Objects, try using

Map<String,Object> 

something like this:

 String mUrl; //initialized somewhere else
 ArrayList<String> mUrlDove; //initialized somewhere else
 Map<String, Object> jsonParams = new HashMap<>();
 jsonParams.put("url", mUrl);
 jsonParams.put("urlDove", mUrlDove);
 JsonObjectRequest request = new JsonObjectRequest(Request.Method.POST, url, new JSONObject(jsonParams),
 new Response.Listener<JSONObject>()
 {
 @Override
 public void onResponse(JSONObject response)
 {
 Log.d("Volley Response: ", response.toString()); 
 //do the other stuff you need...
 }
 },
 new Response.ErrorListener()
 {
 @Override
 public void onErrorResponse(VolleyError error)
 {
 if (null != error.networkResponse)
 {
 Log.d(" Volley Error Code: ", "" + error.networkResponse.statusCode);
 //probably throw an Exception or some MessageEvent
 }
 }
 });
 requestQueue.add(request);

this works for me with complex objects like

 Map<String,<List<Map<String,Object>>>

with the most inner objects being Strings and Integers, and the List being initialized as a new ArrayList.

Hope this Helps!

• chris: can you help stackoverflow.com/questions/46422727/…
• TommySM: @chris still relevant?