[streamh]

Hi, all:

I want to write a log file for my app , and I find that the old messages always covered by the new ones. There is only one message in my log file. As well known , we can set the mode of fileconnection, but there are only three ways in BB: WRITE, READ, READ_WRITE. So we couldn't set the APPEND mode? Is there any other ways?
Thank you very much!

My code here is :

FileConnection fconn = (FileConnection)Connector.open("file:///SDCard/BlackBerry/pictures/1.txt",Connector.READ_WRITE); 
                        if (!fconn.exists()) 
                        { 
                            fconn.create(); 
                            System.out.println("Create a new file!"); 
                            OutputStream out = fconn.openOutputStream();                             
                            out.write(buffer1.toString().getBytes()); 
                            out.close(); 
                        } 
                        else
                        {
                            OutputStream out = fconn.openOutputStream();                             
                            out.write(buffer1.toString().getBytes()); 
                            out.close(); 
                            }

[simon.hain]

you can take a look at net.rim.device.api.system.EventLogger if you have problems with your own logger.

gs
simon

[CJLopez]

It may sound silly, and I may be reviving a pretty old topic, but, try adding a "\n" (a jump line character) at the end of each line. Because the cursor is stuck on the same line it always write on that line... or something like that, I think

[guildencrantz]

Originally Posted by CJLopez

It may sound silly, and I may be reviving a pretty old topic, but, try adding a "\n" (a jump line character) at the end of each line. Because the cursor is stuck on the same line it always write on that line... or something like that, I think

New lines aren't the issue here. The issue is that if the file exists and has data in it write, print, and println all start at the beginning of the file. The issue then becomes how, within the FileConnection/OutputDataStream world, can you get to the end of the file? Sure, we could just read the contents of the file into a variable, append to that variable, and then write back to the file, but that's a bit ridiculous.

There has to be some kind of seek() or skip() function that we can use to move the stream pointer to the end of the file. Does anybody know how to do this?

[richard.puckett]

How about FileConnection.openOutputStream(long byteOffset)?

[guildencrantz]

For crying out load! It always amazes me how stupid a few hours of sleep and somebody pointing out how stupid I've been can make me feel.

Thanks. Yes, folks, the key is not to fixate on openDataOutputStream.

        PrintStream logStream;
        try
        {
            String _logURL = "file:///SDCard/log.txt";
            FileConnection fconn = (FileConnection)Connector.open(_logURL);
            // If no exception is thrown, then the URI is valid, but the file may or may not exist.
            if (!fconn.exists())
            {
                fconn.create();
            }
            logStream = new PrintStream(fconn.openOutputStream(fconn.fileSize()));
        }catch (IOException ioe) {
            System.out.println("File error: " + ioe.toString());
        }catch (Exception e){
            System.out.println("General File error: " + e.toString());
        }