public void post(
     Context context,
     String str,
     Header[] headerArr,
     RequestParams requestParams,
     String str2,
     AsyncHttpResponseHandler asyncHttpResponseHandler) {
   HttpUriRequest httpPost = new HttpPost(str);
   if (requestParams != null) {
     httpPost.setEntity(paramsToEntity(requestParams));
   }
   if (headerArr != null) {
     httpPost.setHeaders(headerArr);
   }
   sendRequest(
       this.httpClient, this.httpContext, httpPost, str2, asyncHttpResponseHandler, context);
 }