Get json response in Volley

Question

I have the following json response

{"multicast_id":8XXXD,"success":1,"failure":0,"canonical_ids":0,"results":[{"message_id":"0:14XX"}]}

I want to check if failure = 0 or not in java. Following is my Volley code.

StringRequest stringRequest = new StringRequest(Request.Method.POST, CONN_URL.send_single_push,
            new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                    Toast.makeText(getActivity(), response, Toast.LENGTH_LONG).show();
                }
            },
            new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {

                }
            }) {
        @Override
        protected Map<String, String> getParams() throws AuthFailureError {
            Map<String, String> params = new HashMap<>();
            params.put("title", title);
            params.put("message", message);

            if (!TextUtils.isEmpty(image))
                params.put("image", image);

            params.put("course", course);
            return params;
        }
    };

    MySingleton.getInstance(getActivity()).addToRequestQueue(stringRequest);

I am new to android. Please help me solve this problem.

1) the json isnt valid. 2) you get it by json.getInt("failure"); — letsCode
– letsCode, Commented Apr 9, 2018 at 19:52

Ahmad Ayyaz · Accepted Answer · 2019-04-05 05:53:56Z

You can do it by doing like this.

First you need to Convert String response to JSON response

StringRequest stringRequest = new StringRequest(Request.Method.POST, CONN_URL.send_single_push,
        new Response.Listener<String>() {
            @Override
            public void onResponse(String response) {
                JSONObject obj = new JSONObject(response);
                int failure = obj.optInt("failure");
                if (failure == 0){
                }else{  
                }
            }
        },
        new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {

            }
        }) {
    @Override
    protected Map<String, String> getParams() throws AuthFailureError {
        Map<String, String> params = new HashMap<>();
        params.put("title", title);
        params.put("message", message);

        if (!TextUtils.isEmpty(image))
            params.put("image", image);

        params.put("course", course);
        return params;
    }
};

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