Android 异步HTTP请求和Arduino

我正在开发一个Android应用程序，它将通过Wifi与Arduino Uno进行通信。arduino已经编程为在我访问地址192.168.11.110时打开数字端口号12。当我打开浏览器访问地址时，红色LED（连接到端口12）亮起，当我再次访问时，它熄灭，工作正常。问题是在Android应用程序中，我发出HTTP请求，LED亮起，连接似乎“阻塞”，我无法关闭LED，除非重新启动Arduino或结束Android活动，否则无法通过浏览器访问

我在Android应用程序中用于发出HTTP请求的代码如下：

public class ArduinoRequest extends AsyncTask<String, String, String> {

@Override
protected String doInBackground(String... uri) {
    HttpClient httpclient = new DefaultHttpClient();
    HttpResponse response;
    String responseString = null;
    try {
        response = httpclient.execute(new HttpGet(uri[0]));
        StatusLine statusLine = response.getStatusLine();
        if(statusLine.getStatusCode() == HttpStatus.SC_OK){
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            response.getEntity().writeTo(out);
            responseString = out.toString();
            out.close();
        } else{
            //Closes the connection.
            response.getEntity().getContent().close();
            throw new IOException(statusLine.getReasonPhrase());
        }
    } catch (ClientProtocolException e) {
        //TODO Handle problems..
    } catch (IOException e) {
        //TODO Handle problems..
    }
    return responseString;
}

@Override
protected void onPostExecute(String result) {
    super.onPostExecute(result);
    }
}

有什么想法吗？：）

编辑：

我刚刚解决了。请改用此代码：

   // Instantiate the RequestQueue.
              RequestQueue queue = Volley.newRequestQueue(MenuActivity.this);
              String url ="http://192.168.11.110/";

            // Request a string response from the provided URL.
              StringRequest stringRequest = new StringRequest(Request.Method.GET, url,
                      new Response.Listener<String>() {
                          @Override
                          public void onResponse(String response) {
                              // Display the first 500 characters of the response string.
                             // mTextView.setText("Response is: "+ response.substring(0,500));
                          }
                      }, new Response.ErrorListener() {
                  @Override
                  public void onErrorResponse(VolleyError volleyError) {

                  }

              });

//实例化RequestQueue。
RequestQueue=Volley.newRequestQueue（MenuActivity.this）；
字符串url=”http://192.168.11.110/";
//从提供的URL请求字符串响应。
StringRequest StringRequest=新的StringRequest（Request.Method.GET，url，
新的Response.Listener（）{
@凌驾
公共void onResponse（字符串响应）{
//显示响应字符串的前500个字符。
//mTextView.setText（“响应为：”+Response.substring（0500））；
}
}，new Response.ErrorListener（）{
@凌驾
公共错误响应（截击错误截击错误）{
}
});

您的问题解决了吗？是的，我编辑了帖子并发布了解决方案

   // Instantiate the RequestQueue.
              RequestQueue queue = Volley.newRequestQueue(MenuActivity.this);
              String url ="http://192.168.11.110/";

            // Request a string response from the provided URL.
              StringRequest stringRequest = new StringRequest(Request.Method.GET, url,
                      new Response.Listener<String>() {
                          @Override
                          public void onResponse(String response) {
                              // Display the first 500 characters of the response string.
                             // mTextView.setText("Response is: "+ response.substring(0,500));
                          }
                      }, new Response.ErrorListener() {
                  @Override
                  public void onErrorResponse(VolleyError volleyError) {

                  }

              });