HttpURLConnection 抛出异常

本文地址: http://blog.csdn.net/caroline_wendy

Http的URL链接, 会发生错误, 主要原因是 在主UI线程中, 使用网络调用(network call), 就抛出NetworkOnMainThreadException异常.

版本: API level 11以上.

可以使用一个简单的线程, 在后台(asynctask)调用程序, 可以避免此情况;

否则 在getResponseCode()函数处, 抛出异常.

Android API : http://developer.android.com/reference/android/os/AsyncTask.html.

代码:

            String quakeFeed = getString(R.string.quake_feed);
            url = new URL(quakeFeed);

            URLConnection connection;
            connection = url.openConnection();

            HttpURLConnection httpConnection = (HttpURLConnection)connection;
            int responseCode = httpConnection.getResponseCode();

        Thread t = new Thread(new Runnable() {
            @Override
            public void run() {
                refreshEarthquakes();
            }
        });

        t.start();

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Android - HttpURLConnection 抛出异常