bufferReader or InputStreamReader always throws exception

Question

I created a java program that would just read a webpages code... google's for example and it works fine. However I have tried to implement the same code in an android application both in the emulator and on the actual device-Droid X.

I've tried two separate ways and have found either way it is the same line that throws the IOException. It is the line that creates the new bufferReader. I don't know if it is the bufferReader or the InputStreamReader. Also I don't really know how to get anymore information out of the exceptions other than to print out IOException. Here is the important code stripped down. Thanks.

try
        {
//method 1
         URL page = new URL("http://192.168.1.108/score.php");
         URLConnection pageconnection = page.openConnection();
         BufferedReader in = new BufferedReader(
                    new InputStreamReader(
                    pageconnection.getInputStream()));

//method 2
         HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.connect();
            BufferedReader rd  = new BufferedReader(new InputStreamReader(conn.getInputStream()));

while ((inputLine = rd.readLine()) != null) 
            System.out.println(inputLine);

          in.close();
          rd.close();
            HscoreText.setText("It Worked!");
        }
        catch(MalformedURLException e)
        {
         HscoreText.setText("MalformedURL");
        }
        catch (IOException e)
        {
         HscoreText.setText("IOException");
        }

Please post the full stacktrace of your exception. Use Log.d("message", e); — Cheryl Simon
– Cheryl Simon, Commented Jan 18, 2011 at 21:53
Call e.toString() to convert the exception into a string... that will give considerably more information, with any luck. — Jon Skeet
– Jon Skeet, Commented Jan 18, 2011 at 21:54

V-rund Puro-hit · Accepted Answer · 2016-09-07 06:07:32Z

2

Instead of doing this,

HscoreText.setText("IOException");

You can do this.

HscoreText.setText(e.getMessage());

to see the exception message. Are you saying that your code works outside of Android?

Try restarting Eclipse and the Emulator. Try using a different URL.

edited Sep 7, 2016 at 6:07

V-rund Puro-hit

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answered Jan 18, 2011 at 21:56

JLund

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2 Comments

drewsmug Over a year ago

Thanks. I have more information now. My error message says "java.net.SocketException: Permission denied (maybe missing INTERNET permission)". Any clue what that might mean?

drewsmug Over a year ago

I added <uses-permission android:name="android.permission.INTERNET" /> to my manifest and it worked. Thanks

dty · Accepted Answer · 2011-01-18 22:01:09Z

1

It's worth noting that your code (both versions) assumes that the HTML returned has the same character encoding as your platform default encoding. This may not be true even if the server is running on the same machine.

answered Jan 18, 2011 at 22:01

dty

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Comments

Ganesh K · Accepted Answer · 2016-02-21 07:46:04Z

0

Try this - setDoInput (true) and setDoOutput(true) after conn.connect() ;

answered Feb 21, 2016 at 7:46

Ganesh K

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1 Comment

user207421 Over a year ago

Try it why? setDoInput(true) is the default, so that's a waste of time, and setDoOutput(true) sets the request method to POST, which isn't mentioned in the question, nor any parameters thant need to be posted, so that's a waste of time as well.

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