android-async-http json字符串提交到服务器

private static AsyncHttpClient client = new AsyncHttpClient();public static void postJSON(Activity activity, String url ,  StringEntity stringEntity, AsyncHttpResponseHandler responseHandler) {    client.addHeader("Content-Type", "charset=utf-8");    client.post(activity , url, stringEntity , "application/json" , responseHandler);}

如果要用android-async-http提交json字符串到服务器，就用StringEntity类，使用方法如上所示。