极度郁闷的一个读取文本的问题？求高手！
为什么同样一段代码放在 android模拟器中 和放在一般的java main方法中执行的效果不一样？！ 在main方法中能正确读取到文本信息，而在模拟器中“getInputStream”不能输出！ 报错的地方是 buffer.close(); （NullPointException)
Activity: http://hi.csdn.net/space-10185993-do-album-picid-960848-goto-down.html
download:http://hi.csdn.net/space-10185993-do-album-picid-960848.html
public String download(String urlStr) {
StringBuffer sb = new StringBuffer();  
  String line = null;  
  BufferedReader buffer = null;  
  try {  
  URL url = new URL("http://baidu.com");  
  HttpURLConnection urlConn = (HttpURLConnection)url.openConnection();  
  System.out.println("urlConn........."+urlConn); System.out.println("getInputStream:"+urlConn.getInputStream());
  buffer = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));  
  while( (line = buffer.readLine()) != null){  
  sb.append(line);  
  System.out.println("line:"+line);
  }  
  }  
  catch (Exception e) {  
  e.printStackTrace();  
  }  
  finally{  
  try {  
  buffer.close();
  } catch (IOException e) {  
  e.printStackTrace();  
  }  
  }
return sb.toString();  
}

------解决方案--------------------
你用scanner试试
------解决方案--------------------

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</activity>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
</application>
</manifest>