将 HTTPost 发送到 URL 时 Android 应用程序挂在模拟器上?
我在android中编写了一段代码来发送一个url的httppost请求,而我使用像“http://xxxx/myfolder/values.aspx”这样的本地IP地址将数据发布到虚拟目录所在的本地服务器上是为values.aspx 创建的,下面编写的代码工作正常,并且可以轻松地将数据发送到本地主机。当在 httpost 请求中指定真实的 url 时,应用程序会挂起并且不会回复任何错误或异常。厌倦了没有结果的问题。请回复相关帖子。
=================================================== ===========================
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://www.xyz.com/myfolder/values.aspx");
enter code here
try
{
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("data",txtdis.getText().toString()
+txtsys.getText().toString()+txtpulse.getText().toString()+txttemp.getText().toString()));
nameValuePairs.add(new BasicNameValuePair("reg", "asdfghjklpoiuytr"));
AbstractHttpEntity ent = new UrlEncodedFormEntity(nameValuePairs, HTTP.UTF_8);
httppost.setEntity(ent);
httppost.addHeader("data","vacant");
httppost.addHeader("reg","vacant");
HttpResponse response = httpclient.execute(httppost);
if (ent != null)
{
Log.i("RESPONSE", response.getStatusLine().toString());
}
HttpEntity resEntity = response.getEntity();
if (resEntity != null)
{
Log.i("RESPONSE",EntityUtils.toString(resEntity));
}
Intent browse = new Intent( Intent.ACTION_VIEW , Uri.parse( "http://192.168.2.50/BAN_app/getvalues1.aspx" ) );
startActivity( browse );
I have wrriten a code in android to send a httppost request for a url, while i am using a local Ip address like "http://x.x.x.x/myfolder/values.aspx" to post the data on the local server where a virtual directory is created for values.aspx the code written below works fine, and sends the data to the localhost easily. While when a real url is specified in httpost request the application hangs and reply no error or exception. Fed up from the problem with no results. Please reply with a relevant POST.
=============================================================================
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://www.xyz.com/myfolder/values.aspx");
enter code here
try
{
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("data",txtdis.getText().toString()
+txtsys.getText().toString()+txtpulse.getText().toString()+txttemp.getText().toString()));
nameValuePairs.add(new BasicNameValuePair("reg", "asdfghjklpoiuytr"));
AbstractHttpEntity ent = new UrlEncodedFormEntity(nameValuePairs, HTTP.UTF_8);
httppost.setEntity(ent);
httppost.addHeader("data","vacant");
httppost.addHeader("reg","vacant");
HttpResponse response = httpclient.execute(httppost);
if (ent != null)
{
Log.i("RESPONSE", response.getStatusLine().toString());
}
HttpEntity resEntity = response.getEntity();
if (resEntity != null)
{
Log.i("RESPONSE",EntityUtils.toString(resEntity));
}
Intent browse = new Intent( Intent.ACTION_VIEW , Uri.parse( "http://192.168.2.50/BAN_app/getvalues1.aspx" ) );
startActivity( browse );
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您在 UI 线程中执行此请求。这会导致整个用户界面在请求期间被阻塞,并会触发 <如果您的请求花费的时间超过 5 秒,则会出现“应用程序未响应 (ANR)” 对话框。
始终在不同的线程中执行网络调用或工作量大的方法。 AsyncTask
类是完成这项工作的一个很棒且易于使用的工具。
You execute this request in the UI-thread. This results in blocking the whole ui for the time of the request, and will trigger an App Not Responding (ANR) dialog if your request takes longer than 5 seconds.
Always execute network calls or work-heavy methods in a different thread. The AsyncTask
class is a great and easy to use tool to get this job done.