HttpURLConnection的在Android 4.0出现故障 [英] HttpURLConnection fails on Android 4.0

问题描述

我用这code来从网上我的changelog。

I am using this code to fetch my changelog from the net.

InputStream content = null;
           try {


               URL url = new URL("http://dreamhawk.blinkenshell.org/changelog.txt");
               HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
               urlConnection.setRequestMethod("GET");
               urlConnection.connect();

               content = urlConnection.getInputStream();


               BufferedReader r = new BufferedReader(new InputStreamReader(content));
               StringBuilder total = new StringBuilder();
               String line;
               String NL = System.getProperty("line.separator");
               try {
                   while ((line = r.readLine()) != null) {
                       total.append(line + NL);
                   }
               } catch (IOException e) {
                   // TODO Auto-generated catch block
                   e.printStackTrace();
               }

               String page = total.toString();

               Dialog dialog = new Dialog(Main.this);

               dialog.setContentView(R.layout.custom_dialog);
               dialog.setTitle(R.string.changelog);
               dialog.setCanceledOnTouchOutside(true);

               TextView text = (TextView) dialog.findViewById(R.id.text);
               text.setTextSize(13);
               text.setText(page);
               dialog.show();
           } catch (Exception e) {
               //handle the exception !
           }

这工作，在Android 2.3及以下......不过既然ICS更新，我得到什么！ 没有对话，没有任何反应，什么都没有！帮帮我！ ：/

This works, on Android 2.3 and below... But since the ICS update, i am getting nothing! No dialog, no response, no nothing! Help! :/

推荐答案

我知道，在允许的主线程未启用的Andr​​oid 3.0的网络连接。

I know in android 3.0 network connection on the main thread isnt permitted.

StrictMode自动开启。 我敢肯定它是相同的4.0

StrictMode is turned on automatically. Im sure it is the same for 4.0

要解决这个问题，你的必须的执行在一个单独的线程的网络连接......例如，使用的AsyncTask 。

To fix the issue, you must perform the network connection on a separate thread... for example, using an AsyncTask.

关于这个问题的阅读这篇博客文章：

Read this blog post on the subject:

这篇关于HttpURLConnection的在Android 4.0出现故障的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！