Save and read file with stream on BlackBerry

Question

Argument 'address' is the string "CepVizyonVersionFile", and after Connector.openDataInputStream(address) the program throws an exception with message:

no ' : ' in URL.

What format should address be in?

public void saveLocal(String fileString, String address) {
        try {
            DataOutputStream fos = Connector.openDataOutputStream(address); //openFileOutput(address);
            fos.write(fileString.getBytes());
            fos.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

}

public String readLocal(String address, int lenght) {
    byte[] buffer = new byte[lenght];
    byte[] buffer2;
    String str = new String();
    try {
        DataInputStream fis = Connector.openDataInputStream(address);
        int lnght = fis.read(buffer);
        buffer2 = new byte[lnght];
        fis.close();
        for (int i = 0; i < lnght; i++)
            buffer2[i] = buffer[i];
        str = new String(buffer2);
    }  catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    return str;
}

score 1 · Answer 1 · answered Nov 10 '10 at 21:50

1

Where do you put your file?
If it is on the media card, your address should be like this: "file:///SDCard/"+yourfilename.

answered Nov 10 '10 at 21:50

Xiangdong

254
2
10

Michael Donohue · Accepted Answer · 2010-11-10T10:43:01.127

The BlackBerry API documentation for Connector has an explanation of the format:

The parameter string that describes the target should conform to the URL format as described in RFC 2396. This takes the general form: {scheme}:[{target}][{parms}] where {scheme} is the name of a protocol such as http.

The {target} is normally some kind of network address.

Any {parms} are formed as a series of equates of the form ";x=y". Example: ";type=a".

and the supported schemes are listed as well:

comm
socket
udp
sms
mms
http
https
tls or ssl
Bluetooth Serial Port Profile

Since you want a file, you'll need to take a look at the package documentation for javax.microedition.io.file

The format of the input string used to access a FileConnection through Connector.open() must follow the format for a fully qualified, absolute path file name as described in the file URL format as part of IETF RFCs 1738 & 2396. That RFC dictates that a file URL takes the form:

file://<host>/<path>

ok if I want to files are ınvısıble for other apps and user, what should I dO? — atasoyh, Nov 10 '10 at 12:09
@atasoyh That sounds like a distinct question - open a new question on StackOverflow for it. — Michael Donohue, Nov 10 '10 at 16:54

Save and read file with stream on BlackBerry

2 Answers2