Hi Murphy,
I just made code change to get rid of NullPointerException by creating
YahooClient object (by new YahooClient())
------------------------
//Part of ChallengeResponseV10.java code where challenge.bin is read
class ChallengeResponseV10 extends ChallengeResponseUtility
implements ChallengeResponseV10Tables
{
......
......
// -----Buffer for binary data, and resource filename
private static byte[] data;
private final static String BIN_FILE="challenge.bin";
// -----------------------------------------------------------------
// Load binary data tables as a resource from /ysmg/network/BIN_FILE
// -----------------------------------------------------------------
static
{ try
{ // -----Open stream to resource located next to this
class
Class v10 = Class.forName
("ymsg.network.ChallengeResponseV10");
YahooClient yahooClient = new YahooClient();
InputStream istream = yahooClient.retInputStream
();
//DataInputStream dis = new DataInputStream
(v10.getResourceAsStream (BIN_FILE));
DataInputStream dis = new DataInputStream(istream);
System.out.println("ChallengeResponseV10: available
bytes value:");
System.out.print(dis.available());
data = new byte[dis.available()];
// -----Extra entry at end of offset table has entire
file size
if(data.length<TABLE_OFFSETS[TABLE_OFFSETS.length-1])
throw new Exception("Data too short?");
// -----Read binary data into array
dis.readFully(data);
dis.close();
}
catch(Exception e)
{ System.err.println("Error loading resource file: ");
e.printStackTrace();
}
}
-------------------------------------
I am getting following error as seen in Logcat
--------------------------------------
java.lang.RuntimeException: Can't create handler inside thread that
has not called Looper:prepare()
at android.os.Handler.<init>(Handler.java:111)
at android.app.Activity.<init>(Activity.java:660)
at AndJYMSG.YahooClient.<init>(YahooClient.java:20)
at ymsg.network.ChallengeResponseV10.<clinit>
(ChallengeResponseV10.java:73)
at ymsg.network.Session.receiveAuth(Session.java:1114)
at ymsg.network.Session$InputThread.process(Session.java:2322)
at ymsg.network.Session$InputThread.run(Session.java:2293)
-------------------------------------
---------------------------
//The source code of Session.receiveAuth() is as follows
protected void receiveAuth(YMSG9Packet pkt) // 0x57
throws IOException,NoSuchAlgorithmException
{ String v10 = pkt.getValue("13");
// '0'=v9, '1'=v10
String[] s;
try
{ if(v10!=null && !v10.equals("0"))
{
s=ChallengeResponseV10.getStrings(loginID,password,pkt.getValue
("94"));
}
else
{
s=ChallengeResponseV9.getStrings(loginID,password,pkt.getValue
("94"));
}
}
catch(NoSuchAlgorithmException e) { throw e; }
catch(Exception e) { throw new YMSG9BadFormatException
("auth",false,e); }
transmitAuthResp(s[0],s[1]);
}
--------------------------------------------
---------------------------------------
// Source code of Session$InputThread.process
// -----Switch on packet type to handler code
void process(YMSG9Packet pkt) throws Exception
{ // -----A null packet is sent when the input stream
closes
if(pkt == null) { quit=true; return; }
// -----Process header
if(pkt.sessionId!=0) // Some
chat packets send zero
sessionId = pkt.sessionId; //
Update sess id in outer class
// -----Error header?
if(pkt.status==-1 && processError(pkt)==true) return;
// -----Process payload
switch(pkt.service) // Jump
to service-specific code
{ case SERVICE_ADDIGNORE :
receiveAddIgnore(pkt); break;
case SERVICE_AUTH :
receiveAuth(pkt); break;
case SERVICE_AUTHRESP :
receiveAuthResp(pkt); break;
case SERVICE_CHATCONNECT :
receiveChatConnect(pkt); break;
case
SERVICE_CHATDISCONNECT:receiveChatDisconnect(pkt); break;
case SERVICE_CHATLOGOFF :
receiveChatLogoff(pkt); break;
case SERVICE_CHATLOGON :
receiveChatLogon(pkt); break;
case SERVICE_CHATMSG :
receiveChatMsg(pkt); break;
case SERVICE_CHATPM :
receiveChatPM(pkt); break;
case SERVICE_CONFADDINVITE:
receiveConfAddInvite(pkt); break;
case SERVICE_CONFDECLINE :
receiveConfDecline(pkt); break;
case SERVICE_CONFINVITE :
receiveConfInvite(pkt); break;
case SERVICE_CONFLOGOFF :
receiveConfLogoff(pkt); break;
case SERVICE_CONFLOGON :
receiveConfLogon(pkt); break;
case SERVICE_CONFMSG :
receiveConfMsg(pkt); break;
case SERVICE_CONTACTIGNORE:
receiveContactIgnore(pkt); break;
case SERVICE_CONTACTNEW :
receiveContactNew(pkt); break;
case SERVICE_FILETRANSFER :
receiveFileTransfer(pkt); break;
case SERVICE_FRIENDADD :
receiveFriendAdd(pkt); break;
case SERVICE_FRIENDREMOVE :
receiveFriendRemove(pkt); break;
case SERVICE_IDACT :
receiveIdAct(pkt); break;
case SERVICE_IDDEACT :
receiveIdDeact(pkt); break;
case SERVICE_ISAWAY :
receiveIsAway(pkt); break;
case SERVICE_ISBACK :
receiveIsBack(pkt); break;
case SERVICE_LIST :
receiveList(pkt); break;
case SERVICE_LOGOFF :
receiveLogoff(pkt); break;
case SERVICE_LOGON :
receiveLogon(pkt); break;
case SERVICE_MESSAGE :
receiveMessage(pkt); break;
case SERVICE_NEWMAIL :
receiveNewMail(pkt); break;
case SERVICE_NOTIFY :
receiveNotify(pkt); break;
case SERVICE_PING :
receivePing(pkt); break;
case SERVICE_USERSTAT :
receiveUserStat(pkt); break;
default : System.out.println("UNKNOWN:
"+pkt.toString()); break;
}
}
// -----Called when status == -1. Returns true if no further
processing is
// -----required (process() returns) otherwise false (process()
continues).
boolean processError(YMSG9Packet pkt) throws Exception
{ switch(pkt.service) // Jump
to service-specific code
{ case SERVICE_AUTHRESP :
receiveAuthResp(pkt); return true;
case SERVICE_CHATLOGON :
receiveChatLogon(pkt); return true;
case SERVICE_LOGOFF :
receiveLogoff(pkt); return true;
default : errorMessage(pkt,null); return
(pkt.body.length<=2);
}
}
}
------------------------------------------------
------------------------------
//The source code of Session$InputThread.run
private class InputThread extends Thread
{ public boolean quit=false; // Exit
run in J2 compliant way
// -----Start input thread
public InputThread() { super(ymsgThreads,"Network Input");
this.start(); }
// -----Accept packets and send them for processing
public void run()
{ try
{ // -----Dies when (a) a LOGOFF packet sets
quit, or (b) a null
// -----packet is sent to process().
while(!quit)
{ try
{
process(network.receivePacket());
}catch(Exception e)
{ try
{ SessionExceptionEvent
se = new SessionExceptionEvent
(Session.this,"Source: InputThread",e);
new
FireEvent().fire(se,SERVICE_X_EXCEPTION);
}catch(Exception e2) {
e2.printStackTrace(); }
}
}
}
finally
{ // -----Terminate (note: network may already
have been closed if
// -----the loop terminated due to a lost
connection).
closeNetwork();
new FireEvent().fire(new
SessionEvent(this),SERVICE_LOGOFF);
}
}
----------------------------------------
I guess now you have better idea of the problem and I guess you are in
a better position to advise me now.
Thanks
Maddy
On Feb 9, 3:33 pm, Mark Murphy <[email protected]> wrote:
> Maddy wrote:
> > To give more information, I had put break point at
>
> > InputStream istream = yahooClient.retInputStream();
>
> > in the code snippet I had put before in this conversation.
>
> > When the control hits this break point, I pressed F5 (I am using
> > Eclipse IDE) to go into the function,
> > but instead of going into the function, it straight aways throws
> > NullPointerException.
>
> > may be the above information too helps you in helping me.
>
> When I asked "What is the exception?" in my previous reply, I meant
> "What is the exception?". I am assuming, from your above message, that
> the exception is a NullPointerException.
>
> If you are getting a NullPointerException on the above line, yahooClient
> is presumably null. You did not provide any source code indicating you
> are ever creating a YahooClient object (e.g., new YahooClient()).
>
> --
> Mark Murphy (a Commons Guy)http://commonsware.com
> _The Busy Coder's Guide to Android Development_ Version 2.0 Published!
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