无法解析主机＆QUOT;＆LT;此处＆GT插入URL;＆QUOT;没有与主机名关联的地址 [英] Unable to resolve host "<insert URL here>" No address associated with hostname

问题描述

我试过下面这个教程： <一href="http://www.anddev.org/novice-tutorials-f8/getting-data-from-the-web-urlconnection-via-http-t351.html">Getting从Web 数据

I tried following this tutorial: Getting Data from the Web

不过，我试图在Android 3.0，为平板电脑最新的平台实现它，我得到这个错误：无法解析主机www.anddev.org没有与主机名关联的地址。

I tried implementing it on Android 3.0, the latest platform for tablets, however, I get this error: "Unable to resolve host "www.anddev.org" No address associated with hostname."

您可以检出，我只是用来证明文件存在的URL。 <一href="http://www.anddev.org/images/tut/basic/getdatafromtheweb/loadme.txt">http://www.anddev.org/images/tut/basic/getdatafromtheweb/loadme.txt

You can checkout the URL that I used just to prove that the file exists. http://www.anddev.org/images/tut/basic/getdatafromtheweb/loadme.txt

我创建了一个私有类和AsyncTask的扩展它。这里是code：

I created a private class and extended it with asynctask. Here is the code:

    private class Downloader extends AsyncTask<String,Void,String>{
    String myString = null;
    @Override
    protected String doInBackground(String... arg0) {
        try{
            URL myURL = new URL("http://www.anddev.org/images/tut/basic/getdatafromtheweb/loadme.txt");
            URLConnection ucon = myURL.openConnection();
            InputStream is = ucon.getInputStream();
            BufferedInputStream bis = new BufferedInputStream(is);

            ByteArrayBuffer baf = new ByteArrayBuffer(50);
            int current = 0;
            while((current=bis.read())!=-1){
                baf.append((byte)current);
            }
            myString = new String (baf.toByteArray());
        }catch(Exception e){
            myString = e.getMessage();
        }
        return myString;
    }
@Override
protected void onPostExecute(String result){
    tv.setText(result);
}
}

任何帮助，在那里将AP preciated。

Any help out there would be appreciated.

推荐答案

我敢打赌，你忘了给您的应用程序使用互联网的权限。尝试添加到您的Andr​​oid清单：

My bet is that you forgot to give your app the permission to use the internet. Try adding this to your android manifest:

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

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