JSON Array with RequestParams in Android Asynchronous Http Client

Question

I have trouble to send a JSON POST Request to my server.

My server accept a POST with application/json as type and an example would be like this:

{
  "name": "Group4",
  "users": [
     {"email": "[email protected]"},
     {"email": "[email protected]"},
  ]
}

If I send this by a REST client I get 200 OK as response, everything fine.

My Android client uses the Android Async HTTP Library (http://loopj.com/android-async-http/) and a documentation to the RequestParams class is here https://loopj.com/android-async-http/doc/com/loopj/android/http/RequestParams.html

RequestParams params = new RequestParams();
String userName = getUserName();
List<String> userList = getUserList();
params.put("name", userName);
JSONArray users = new JSONArray();
for(String user : userList) {
    JSONObject obj = new JSONObject();
    try {
        obj.put("email", user);
    } catch (JSONException e) {
        // ...
    }
    users.put(obj);
}
params.put("users", users);

I thought this will create exactly a JSON like my example. I don't know if I have the possibility to get a JSON string of this RequestParams. I only can access the parameter as a String:

name=Test&users=[{"email":"[email protected]"}, {"email":"[email protected]"}]

My server don't even accept the request and fails directly with the error:

AttributeError: 'unicode' object has no attribute 'iteritems'

The problem has to be at the point where I create the RequestParams. Can someone tell me what is wrong with that? I thought I have to create an array with name "users" and then add objects in it with key-value items.

azwar_akbar · Accepted Answer · 2017-05-12 15:34:04Z

3

Just put List<> to your RequestParams. Here is the example:

RequestParams params = new RequestParams();
List<String> list = new ArrayList<String>(); // Ordered collection

list.add("Java");
list.add("C");

params.put("languages", list); 

//above code will generate url params: "languages[0]=Java&languages[1]=C"

So you don't need to add it manually using Loop sequence. See the docs here

answered May 12, 2017 at 15:34

azwar_akbar

1,65120 silver badges29 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Sachin Chauhan · Accepted Answer · 2017-01-13 13:06:11Z

-1

Will recommend to use Volley for Async calls in Android https://developer.android.com/training/volley/index.html

answered Jan 13, 2017 at 13:06

Sachin Chauhan

3642 silver badges11 bronze badges

Collectives™ on Stack Overflow

JSON Array with RequestParams in Android Asynchronous Http Client

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related