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I need help in http connection???

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I need help in http connection???

Postby sit06603 » Tue Sep 30, 2008 9:22 am

hi all,

I not quite familiar with android... hoping I can get some answer here... thanks...
I have two questions here...

1st Question
---------------
How can I use android to call a url and get the inputStream to get the content of the pages???


Code in J2me:-
-------------------
Syntax: [ Download ] [ Hide ]
Using java Syntax Highlighting
  1.  connection = (HttpConnection) Connector.open(Info.DeviceInfo.URL + "?cmd=gses&userid=" + userSession);
  2.  
  3.  connection.setRequestMethod(HttpConnection.GET);
  4.  
  5.  
  6.  
  7. if (connection.getHeaderField("Set-Cookie") != null) {
  8.  
  9.          cookie = connection.getHeaderField("Set-Cookie");
  10.  
  11.   }
  12.  
  13.  
  14.  
  15. DataInputStream dis = connection.openDataInputStream();
  16.  
  17.  
  18.  
  19. int ch;
  20.  
  21. String str = "";
  22.  
  23.  
  24.  
  25. while ((ch = dis.read()) != -1) {
  26.  
  27.          str += (char) ch;
  28.  
  29. }
  30.  
  31.  
Parsed in 0.032 seconds, using GeSHi 1.0.8.4



2nd Question
----------------
How can I get Stream Connection from a server using Android??


Coding in J2me
------------------
Syntax: [ Download ] [ Hide ]
Using java Syntax Highlighting
  1. connection=(StreamConnection)Connector.open(DeviceInfo.URL_CONNECTION);
  2.  
  3.  
  4.  
  5. inpStream = connection.openInputStream();
  6.  
  7. outStream = connection.openOutputStream();     
  8.  
  9.  
Parsed in 0.030 seconds, using GeSHi 1.0.8.4



anyone have any example can show me???




wesley.
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Postby ninor » Tue Sep 30, 2008 10:21 am

Have you tried this code that you posted?

Along with the code, you'll need some permissions into the AndroidManifest.xml
See this:
http://code.google.com/android/reference/android/Manifest.permission.html
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Postby sit06603 » Tue Sep 30, 2008 10:27 am

yup... I have go through...

HttpConnection the class seem to be very different with those in J2ME one... and StreamConnection is not available in android(mayb is others class has the similar functionality, but I dunno how)...


any ideas??? hoping can get some help here or probably some example...

thanks...

Wesley.
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Postby ninor » Tue Sep 30, 2008 11:03 am

And any of these Direct and Indirect subclasses of InputStream?
http://code.google.com/android/reference/java/io/InputStream.html

I'm sorry that I can't be of much more help in this topic..
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Postby charlie.collins » Tue Sep 30, 2008 12:34 pm

There are a lot of examples around that use HTTP, and there are many ways to do it in Android. You can use a straight up URL and HttpConnection from the java.net packages, or you can use the Apache HTTP stuff.

http://code.google.com/android/referenc ... mmary.html

http://code.google.com/android/referenc ... mmary.html

Just for a quick and dirty URL connection and stream you can do something like the following:


Syntax: [ Download ] [ Hide ]
Using java Syntax Highlighting
  1.  
  2.  
  3. String result = null;
  4.  
  5. URL url = null;
  6.  
  7.                 try {
  8.  
  9.                         url = new URL("http://youre.hostname.tld.path/here");
  10.  
  11.                 } catch (MalformedURLException e) {
  12.  
  13.                         Log.e(e.getMessage());
  14.  
  15.                 }
  16.  
  17.  
  18.  
  19.                 if (url != null) {
  20.  
  21.                         try {
  22.  
  23.                                 HttpURLConnection urlConn = (HttpURLConnection) url
  24.  
  25.                                                 .openConnection();
  26.  
  27.                                 BufferedReader in = new BufferedReader(new InputStreamReader(
  28.  
  29.                                                 urlConn.getInputStream()));
  30.  
  31.                                 String inputLine;
  32.  
  33.  
  34.  
  35.                                 int lineCount = 0; // limit the lines for the example
  36.  
  37.                                 while ((lineCount < 10) && ((inputLine = in.readLine()) != null)) {
  38.  
  39.                                         lineCount++;
  40.  
  41.                                         result += "\n" + inputLine;
  42.  
  43.                                 }
  44.  
  45.                                
  46.  
  47.                                 in.close();
  48.  
  49.                                 urlConn.disconnect();
  50.  
  51.  
  52.  
  53.                         } catch (IOException e) {
  54.  
  55.                                 Log.e(e.getMessage());
  56.  
  57.                         }
Parsed in 0.036 seconds, using GeSHi 1.0.8.4


You're direct J2ME code probably won't work in Android, but there are many very easy networking options available - as you can see.
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Postby ninor » Thu Oct 02, 2008 6:05 am

THanks for your help, charlie
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