使用AsyncTask的和namevaluepairs中HTTP POST [英] Http post using AsyncTask and NameValuePairs

问题描述

我有需要一些数据发送到所述服务器的应用程序。我创建一个Connection类来处理的过程。下面是我的code：

 私有类连接扩展的AsyncTask＆LT; ArrayList的＆LT;的NameValuePair＆gt;中太虚，太虚＆GT; {    保护无效doInBackground（ArrayList的＆LT;＆的NameValuePair GT; ... namevaluepairs中）{        尝试{
            HttpClient的HttpClient的=新DefaultHttpClient（）;
            HttpPost httppost =新HttpPost（http://www.xxxx.com/postdata.php）;
            httppost.setEntity（新UrlEn codedFormEntity（namevaluepairs中））;         //执行HTTP POST请求
            HTT presponse响应= httpclient.execute（httppost）;            Log.i（POSTDATA，response.getStatusLine（）的toString（））;
        }
        最后{}    }}
 

不过，我得到了以下错误：构造UrlEn codedFormEntity（ArrayList的[]）是不确定的。我是新来的Andr​​oid和我不知道是什么引起的错误。非常感谢！

解决方案

 私有类连接扩展的AsyncTask＆LT; ArrayList的＆LT;的NameValuePair＆gt;中太虚，太虚＆GT; {    保护无效doInBackground（ArrayList的＆LT;＆的NameValuePair GT; ... namevaluepairs中）{
        //获取零指数namevaluepairs中，并用它来发布
        ArrayList的＆LT;＆的NameValuePair GT; nvPairs = namevaluepairs中[0];        尝试{
            HttpClient的HttpClient的=新DefaultHttpClient（）;
            HttpPost httppost =新HttpPost（http://www.xxxx.com/postdata.php）;
            httppost.setEntity（新UrlEn codedFormEntity（nvPairs））;         //执行HTTP POST请求
            HTT presponse响应= httpclient.execute（httppost）;            Log.i（POSTDATA，response.getStatusLine（）的toString（））;
        }
        最后{}    }}
 

I have an app that needs to send some data to the server. I create a Connection class to handle the process. Below is my code:

private class Connection extends AsyncTask<ArrayList<NameValuePair>, Void, Void>{

    protected Void doInBackground(ArrayList<NameValuePair>... nameValuePairs){

        try{
            HttpClient httpclient = new DefaultHttpClient();
            HttpPost httppost = new HttpPost("http://www.xxxx.com/postdata.php");
            httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

         // Execute HTTP Post Request
            HttpResponse response = httpclient.execute(httppost);

            Log.i("postData", response.getStatusLine().toString());
        }
        finally{}

    }

}

However, I get the following error: "The constructor UrlEncodedFormEntity(ArrayList[]) is undefined". I'm new to Android and I have no idea what's causing the error. Many thanks!

解决方案

private class Connection extends AsyncTask<ArrayList<NameValuePair>, Void, Void>{

    protected Void doInBackground(ArrayList<NameValuePair>... nameValuePairs){
        // get zero index of nameValuePairs and use that to post
        ArrayList<NameValuePair> nvPairs = nameValuePairs[0];

        try{
            HttpClient httpclient = new DefaultHttpClient();
            HttpPost httppost = new HttpPost("http://www.xxxx.com/postdata.php");
            httppost.setEntity(new UrlEncodedFormEntity(nvPairs));

         // Execute HTTP Post Request
            HttpResponse response = httpclient.execute(httppost);

            Log.i("postData", response.getStatusLine().toString());
        }
        finally{}

    }

}

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