TestPutRequest.java

StringRequest putRequest = new StringRequest(Request.Method.PUT, url, 
    new Response.Listener<String>() 
    {
        @Override
        public void onResponse(String response) {
           delegate.postNotificationSucced();
        }
    }, 
    new Response.ErrorListener() 
    {
         @Override
         public void onErrorResponse(VolleyError error) {
            VolleyLog.d(TAG, "Error: " + error.getMessage());
            Log.d(TAG, ""+error.getMessage()+","+error.toString());
            delegate.postNotificationFailed((APIErrors) error);
       }
    }
) {
 
    @Override
    protected Map<String, String> getParams() 
    {  
            Map<String, String>  params = new HashMap<String, String> ();
            params.put("Content-Type","application/x-www-form-urlencoded");
            params.put("state", Boolean.toString(isChecked));
            return params;  
    }
    
    @Override
    protected VolleyError parseNetworkError(VolleyError volleyError){
        APIErrors error = null;

        if(volleyError.networkResponse != null && volleyError.networkResponse.data != null){
            error = new APIErrors(new String(volleyError.networkResponse.data));
        }
        return error;
    }
 
};